Shef primer standard hydrometeorological exchange format
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SHEF* Primer *Standard Hydrometeorological Exchange Format. Mike Callahan WFO Louisville September 29, 2009. Objectives. Know the three different types of SHEF reports and when they are used Understand the various elements in a SHEF report

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SHEF* Primer *Standard Hydrometeorological Exchange Format

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Shef primer standard hydrometeorological exchange format

SHEF* Primer*Standard Hydrometeorological Exchange Format

Mike Callahan

WFO Louisville

September 29, 2009



  • Know the three different types of SHEF reports and when they are used

  • Understand the various elements in a SHEF report

  • Understand the different descriptors in a SHEF data element

  • Know how to encode/decode SHEF reports

The shef manual

The SHEF Manual

  • The SHEF Manual Version 2.2 (NWSM 10-944) is the ultimate source of all information about SHEF

  • Every office should have a copy of this manual

  • It is available online in PDF format at

  • This primer refers to it constantly, get it and be prepared to use it

The three type of reports

The Three Type of Reports

  • The .E format is used to encode an EVENLY spaced sequence of data from a SINGLE location

  • The .B format is used to encode a collective of SIMILAR data from a GROUP of locations

  • The .A format is used for everything else

A simple example we want to encode this data

A Simple ExampleWe want to encode this data:

  • The river gage reading at Deputy IN was 13.45 at 7:00 AM EST on 4/1/2009

  • Since we have a single piece of data for one location we will use the .A format.

  • We need:

    • The location ID: DEPI3

    • The date and time of the data: 20090401 E DH0700

    • The type and value of the data: HG 13.45

A reports

.A Reports

  • .A reports are the simplest SHEF report

  • These reports can encode any type of data but may not be the most efficient choice

  • Use for a set of non-repeating or random sequence of data for a single location

  • Split into two sections, positional fields and a data string

  • Using the data from the previous slide, lets generate our first SHEF report:

.A DEPI3 20090401 E DH07/HG 13.45

data string

positional fields

A positional fields

.A Positional Fields

.A DEPI3 20090401 E

Time Zone


Location ID

Format Specifier

Format specifier

Format Specifier

  • Specifies the report type

  • Only choices are .A, .B, or .E

  • Optionally followed by an R for a revision or a number for a continuation

  • Data stored in the AWIPS database as missing will be overwritten regardless of the revision code

  • The revision code must be present to overwrite data non-missing already in the AWIPS database

  • When revising, make sure the date and time of the new data exactly matches the old data

Location id

Location ID

  • An approved ID listed in the NWSLI database

  • It is possible to encode data from non-ID locations using stranger reports

    • Stranger reports use the latitude and longitude as an ID

    • Xlatlong: North latitude, West longitude

      • Ex. X4511001 = 45.1 N latitude, 100.1 W longitude

      • Ex. X3090988 = 30.9 N latitude, 98.8 W longitude

        • Be sure to include the leading zero for longitudes less than 100 degrees

    • Ylatlong: North latitude, East longitude

      • Ex. Y5030202 = 50.3 N latitude, 20.2 E longitude

Shef primer standard hydrometeorological exchange format


  • See SHEF Manual, Section 4.1.4

  • mmdd: Month and Day

    • If year is missing, the decoder will look 6 months in the future and 6 months in the past to assign the year nearest to the current date

    • Ex: 0401, 1225

  • yymmdd: Year, month, and day

    • If a two digit year is used, the decoder will look 10 years in the future and 90 years in the past to assign the century

    • Ex: 090915, 990210

  • yyyymmdd: 4 digit year, month, and day

    • Ex: 20091010, 19950415

Time zone

Time Zone

  • See SHEF manual, Table 8

  • Common codes are:

    • Z: UTC (GMT) default

    • E: Eastern Local Time (follows shift between standard and daylight saving time)

    • C: Central Local Time

    • M: Mountain Local Time

    • P: Pacific Local Time

    • L: Alaskan Local Time

    • H: Hawaiian Local Time

    • Followed by a D to force daylight time or S to force standard time

Quick quiz a positional fields grab a pen and write down your answers

Quick Quiz: .A Positional FieldsGrab a pen and write down your answers

  • 1. List the elements of the positional fields

  • 2. What format specifier is used to correct a previous .A report

  • 3. Encode the date for July 4, 2009

  • 4. Encode Mountain Daylight Time

Answers to a positional fields

Answers to .A Positional Fields

  • 1. Format specifier, Location ID, Date, Time Zone

  • 2. .AR

  • 3. 20090704 or 090704

  • 4. MD

Data string

Data String

DH07/HG 13.45

  • All elements in the data string must be separated by slashes (/) expect for the parameter code and data pair


Parameter Code


Shef primer standard hydrometeorological exchange format


  • See SHEF Manual, Table 9

  • Default is 12:00:00 for Z time zone, 00:00:00 for all others, missing time defaults are rarely used and could lead to some confusion

  • DHhhmmss = Data hour, minutes, seconds

    • mm and ssdefault to 00

  • DDddhhmmss = Data day, hours, minutes, seconds

    • Use this if the day is not the same as the day in the positional code

  • DMmmddhhmmss = Data month, day, hours, minutes, second

  • DYyyyymmddhhmmss = Data year, month, day, hours, minutes, second

Time relative

Time Relative

  • DRt±xx

    • Adds or subtracts xx units of time t to/from the last explicit time

    • t values

      • S: seconds, N: minutes, H: hours, D: days, M: months, Y: years, E: end of month

    • Ex:

      • DRN+60 or DRH+1 = add an hour

      • DRD-1 = subtract one day

Date relative end of month

Date Relative End of Month

  • DRE±x

    • Allows you to encode end of the month values without knowing how many days are in the month

    • x: the number of months

    • DRE+1 = the last day of the next month

    • DRE+2 = the last day of the next month

    • Ex: encode spring (Mar., Apr., May) monthly precipitation for ALTP1

      • .A ALTP1 0331 E DH07/PPM 4.46/DRE+1 .A1 3.56/DRE+2/6.80

Parameter codes

Parameter Codes


  • All codes except PE have a default






Physical Element

Physical element

Physical Element

  • See SHEF Manual, Table 1 & Appendix G

  • First Letter Category, Second Letter Type, no default

  • Categories:

    • A-C: agricultural, E: evaporation, F: fish,

    • G: ground, H: height, I: ice, L: lake,

    • M: moisture & fire/fuel, N: dam & gate,

    • P: pressure & precipitation, Q: discharge,

    • R: radiation, S: snow, T: temperature,

    • U: wind, V: electrical, W: water quality,

    • X: weather, Y: other

Physical element con t

Physical Element (con’t)

  • Some common codes

    • HG: river stage height

    • HP: pool elevation

    • HT: tailwater elevation

    • PC: accumulated precipitation

    • PP: incremental precipitation

    • SD: snow depth

    • SF: snowfall

    • SW: snow water equivalent

    • QT: total discharge

    • TA: air temperature

Special physical elements

Special Physical Elements

  • Some physical elements are complex and have their own tables in the SHEF Manual

    • IR: ice report, Table 14

    • SR: snow report, Table 15

    • GR: frost report, Table 16

    • PT: precipitation type, Table 17

    • GS: ground state, Table 18

    • HI: river trend, Table 19

    • AF: surface frost intensity, Table 20

    • AM: surface dew intensity, Table 21

    • PM: precipitation probability, Table 22

    • XW: present weather, Appendix C

    • XP: past weather, Appendix D



  • See SHEF Manual, Table 3

  • Some common codes:

    • I: instantaneous, default for most PE codes

    • D: 1 day, default for PP, SF, & others, see Table 7

    • E: 5 minutes

    • G: 10 minutes

    • C: 15 minutes

    • H: 1 hour

    • T: 3 hours

    • Q: 6 hours

    • K: 12 hours

    • P: total since the previous 7AM

    • V: other, duration defined using DV code

Special durations

Special Durations

  • If the duration you want is not listed in Table 3, use the DVtxx code:

  • t values

    • S: seconds, N: minutes, H: hours, D: days,

    • M: months, Y: years

    • Z: reset duration back to default

  • Ex:

    • DVH2/SFV = 2 hour snowfall

    • DVN45/PPV = 45 minute precipitation

Be careful with p durations

Be Careful with P Durations

  • C DH07/PPP 0.35

    • 24 hours of precipitation, 7:00AM yesterday to 7:00AM today

  • C DH06/PPP 0.50

    • 23 hours of precipitation, 7:00AM yesterday to 6:00AM today

  • C DH0730/PPP 1.20

    • 30 minutes of precipitation, 7:00AM today to 7:30AM today!

  • C DH0730/PPD 1.20

    • 24 hours of precipitation, 7:30AM yesterday to 7:30AM today.

  • PPP is can be used for non-7AM observer reports if the observer dumps the gage at 7AM

  • Use PPD for morning reports

Shef primer standard hydrometeorological exchange format


  • See SHEF Manual, Table 4

    • R: Reading (observed), default

    • C: Contingency

    • F: Forecast

    • H: Historical

    • M: Model

    • P: Non-forecast Processed



  • Meaning changes with Type code, see SHEF Manual, Table 4

  • Some common Type & Source code pairs

    • RZ: non-specified (observer) reading, default

    • RG: DCP reading

    • RP: phone reading (LARC, CR10, etc.)

    • RR: radio reading (ALERT, IFLOWS, etc.)

    • FZ: non-specified forecast, default for F type

    • FF: forecast including QPF



  • See SHEF Manual, Table 5

  • Some common codes

    • Z: no extremum, default

    • N: minimum of day

    • H: minimum of 6 hours

    • P: minimum of 12 hours

    • X: maximum of day

    • R: maximum of 6 hours

    • Y: maximum of 12 hours



  • See SHEF Manual, Table 6

  • Some common codes

    • Z: no probability, default

    • A: .2%

    • 1: 10%

    • G: 25%

    • 3: 30%

    • 5: 50%

    • H: 75%

    • 8: 80%

    • Y: 99.8%

    • M: mean expected value

Send codes

Send Codes

  • Many parameter code combinations are so common that a new PE has been created

  • See SHEF Manual, Table 2

  • Some common codes

    • TNTAIRZNZ = minimum air temperature of the day

    • TXTAIRZXZ = maximum air temperature of the day

    • HNHGIRZNZ = minimum gage height of the day

    • HXHGIRZXZ = maximum gage height of the day

    • PFPPTCFZZ = 3 hour flash flood guidance

    • SFSFDRZZZ = 24 hour snowfall



  • The data value

    • Trace amounts are encoded as T or t, stored as .001

    • Missing data are encoded as M, m, MM, mm, +, -, or -9999

    • For precipitation data: values missing a decimal will be divided by 100, thus PP 1 is stored as 0.01! This feature is obscure and may lead to confusion.

  • Data can be followed by a qualifier

    • See SHEF Manual, Table 10

    • Some common codes

      • E:estimated, Q: questionable, F: flagged

      • R: rejected, M: manual edit, B: bad

    • Ex: PP 5.07Q

Retained comments

Retained Comments

  • It is possible to attach comments to data values that will be stored

  • Follow the data value with the comment enclosed in single or double quotes

  • The comment should not exceed 80 character in length

  • Ex: we want to note that the temperature was from a backup thermometer

    • TA 88 "backup thermometer"

Quick quiz a data strings

Quick Quiz: .A Data Strings

  • 5. List the elements in data strings

  • 6. Encode 12:00 UTC

  • 7. Encode 12 hour new snowfall

  • 8. Encode an estimated river stage at 18:15 UTC of 3 feet

Answers a data strings

Answers: .A Data Strings

  • 5. Time, parameter code, value

  • 6. Z DH1200 or Z DH12 or DH1200 or DH12 or nothing

  • 7. SFK

  • 8. DH1815/HG 3.0E

Vector physical elements

Vector Physical Elements

  • Some Physical Elements have paired values, see SHEF Manual section 7.4.6

  • Lets look at TV: temperature in vegetated soil at depth

    • The paired values are the depth and the temperature

    • The two values are encoded like this: dd.tttt, where dd is the depth in inches and tttt is the temperature in degrees and tenths in °F

  • Ex:

    • 12.0621 = 62.1 °F at 12 inches depth

    • 5.450 = 450.0 °F at 5 inches depth (meant 5.045)

    • -1.0022 = -2.2 °F at 1 inch depth

Back to the simple example

Back to the Simple Example

  • The river gage reading at Deputy IN was 13.45 at 7:00 AM EST on 4/1/2005

  • Data time: 20090401 E DH0700

    • We could leave off the century or year in the date

    • We will use DH since the data day is the same as the positional field day

    • We could leave off the minutes

  • River gage reading is HGIRZZZ 13.45

    • We could leave off IRZZZ since they are the default

Putting the report together

Putting the Report Together

.A DEPI3 20090401 E DH07/HG 13.45

  • The data elements are separated by a /

  • To continue the report on the next line use .An, you don’t need slashes at the end or beginning of a line

    • .A DEPI3 0401 E DH07/HG 13.45

      .A1 PPD 0.15/TA 45/TX 60/TN 30

  • To correct a bad report use .AR

    • .AR DEPI3 0401 E DH07/HG 12.45

  • Each station is on a different line

    • .A ABEK2 0401 E DH07/PPD 0.25

    • .A BNNK2 0401 E DH07/PPD 0.34

Other data string elements

Other Data String Elements

  • DCccyymmddhhnn:Creation Date

    • Defaults to same as observation time

    • Required for river forecasts

    • Similar to Date codes

  • DUa:Units Code

    • DUE = English units, default

    • DUS = Standard units

  • DQa:Qualifier Code

    • Same as data qualifier but applies qualifier to ALL data

Internal comments

Internal Comments

  • Allowed anywhere in report

  • Colon (:) turns comments on

  • End of line or another colon turns comments off

  • SHEF decoder ignores them and they are not stored

  • Ex:

    • .A ABYV1 1123 DH11/PPD 0.23 : Albany VT

    • .A BELV1 : Belle VT : 1123 DH11/PPD 0.12

Quick quiz a reports

Quick Quiz: .A Reports

  • 9. Encode data AAWC1 for 5/20 at 08:30 PDT: 24 hour pcpn 1.23, 24 hour max temp 70 °F, 24 hour min temp 50 °F

  • 10. At BLWW1, a DCP, the river crested on 7/4 at 34.5 feet at 1623Z, correcting an earlier incorrect crest of 34.2 feet

  • 11. On 6/1 at 1500 EDT, you get a questionable report of 5 inches of rain in the last 12 hours at latitude 40.3° and longitude 105.0°

Quick quiz a reports con t

Quick Quiz: .A Reports (con’t)

  • 12. BNNM8, an ALERT gage, collects 3.45 inches over the last 5 hours ending 8/9 at 13Z.

  • 13. LARC river readings at 6Z on 10/12: BSNK2 5.67, CYCK2 12.34, FFTK2 10.78

  • 14. Hourly river readings for PTTP1 on 8/9 starting at 18Z: 9.45, 9.47, 9.50, 9.53

Answers a reports

Answers: .A Reports

  • 9..A AAWC1 0520 PD DH0830/PP 1.23/TX 70.A1 TN 50

    • PP defaults to PPDRZZZ, TX defaults to TAIRZXZ, TN defaults to TAIRZNZ

  • 10..AR BLWW1 0704 DH1623/HGIRGX 34.5

    • Must use .AR to correct a bad report

    • Don’t need Z time zone since this is the default

    • Cannot use HX since the send code translates to HGIRZXZ

  • 11..A X4031050 0601 ED DH15/PPK 5.0Q

    • Be sure to include the Q qualifier

Answers a reports con t

Answers: .A Reports (con’t)

  • 12..A BNNM8 0809 DH13/DVH5/PPVRR 3.45

    • Must use DVH05/PPVRR since there is no duration code for 5 hours

  • 13..A BSNK2 1012 DH06/HGIRP 5.67.A CYCK2 1012 DH06/HGIRP 12.34.A FFTK2 1012 DH06/HGIRP 10.78

    • There is a better way to encode this data

  • 14..A PPTP1 0809 DH18/HG 9.45/DRH+1/HG 9.47.A1 DRH+2/HG 9.50/DRH+3/HG 9.53

    • Good use of the time relative code

    • There is also a better way to encode this data

The b format

The .B Format

  • Problem 13 shows that the .A format can get redundant for collectives with the same data and time

  • This is why the .B format exists

  • The repeated information is gathered into a header and is separated from the data

B reports

.B Reports

.B LMK 1012 DH06/HGIRP

BSNK2 5.67

CYCK2 12.34

FFTK2 10.78



  • .B reports consist of three parts

    • Header, which describes the data

    • Body, which contains the data

    • Terminator, .END



B header

.B Header

.B LMK 1012 DH06/HGIRP

  • Similar to the .A format

  • Positional fields are the same except that the location ID is replaced with the message source ID

  • The data string is replaced with the parameter control string

positional fields

parameter control


B parameter control string

.B Parameter Control String

  • Similar to the .A data string without the data

  • Possible elements are the same as .A data string

    • DH: data time, DC: creation time

    • DU: units, DQ: qualifier, DV: duration

  • Parameter codes are listed together separated by slashes

B body

.B Body

BSNK2 5.67

CYCK2 12.34

FFTK2 10.78

  • Each line in the body:

    • Location ID

    • One or more spaces

    • The data for that location separated by slashes

B terminator

.B Terminator


  • Required after the body

  • Other SHEF reports may follow

Another b example

Another .B Example

  • Encode the following collection:

    LocationZtimePcpnMax TempMin Temp






  • The data is similar but differs:

    • BELK1 pcpn report is missing

    • CBDK1 does not have a thermometer

    • DSOK1 time was at 11Z not 12Z

    • ECLK1 minimum temp is missing

First create the header

First: Create the Header

.B TOP 0614 DH12/PPD/TX/TN

Parameter Codes



Message Source

Format Specifier

Next add the body

Next: Add the Body

  • The order of the data must match the order of the parameter codes

  • Encode M for data that usually exists but is missing

  • Encode nothing for data that does not exist

  • Overriding the date and time in the body applies only to the current line

Each line of the body

Each Line of the Body

  • ATDK1 is straight forward

    • ATDK1 1.23/78/45

  • BELK1 rain report is missing

    • BELK1 M/67/43

  • CBDK1 does not have temperatures

    • CBDK1 0.56//

    • Don’t use M because the data never exists, but must include two slashes, a space between the slashes is not required

  • DSOK1 time was 11Z, not 12Z

    • DSOK1 DH11/1.56/75/40

    • Time is overridden for this line only

  • ECLK1 minimum temperature was missing

    • ECLK1 0.89/78/M

The complete b body

The Complete .B Body

ATDK1 1.23/78/45

BELK1 M/67/43

CBDK1 0.56//

DSOK1 DH11/1.56/75/40

ECLK1 0.89/78/M

  • There are other options with .B bodies as we will see later

Finish add the terminator

Finish: Add the Terminator


  • Will generate an error if it is missing

The complete b report

The Complete .B Report

.B TOP 0614 DH12/PPD/TX/TN

ATDK1 1.23/78/45

BELK1 M/67/43

CBDK1 0.56//

DSOK1 DH11/1.56/75/40

ECLK1 0.89/78/M


Commented body

Commented Body


ATDK1 1.23/ 78/ 45 : ATWOOD

BELK1 M/ 67/ 43 : BELOIT


DSOK1 DH11/1.56/ 75/ 40 : DE SOTO

ECLK1 0.89/ 78/ M : ELK CITY

  • Use spaces and comments to make data easier to read

  • The SHEF decoder ignores these additions


Packed body

Packed Body

ATDK1 1.23/78/45, BELK1 M/67/43

CBDK1 0.56//, DSOK1 DH11/1.56/75/40

ECLK1 0.89/78/M

  • Multiple reports on the same line, separated by commas

  • More difficult to read but more compact

  • The SHEF decoder does not care

Quick quiz b reports

Quick Quiz: .B Reports

  • 15. A group of LARCS from RLX report this data at 7/15 18Z; ABRW2 stage 3.21, pcpn accumulator 7.7, BEMW2 upper gage 12.3, lower gage 9.5; CFXW2 stage 1.00 (questionable), accumulator pcpn 8.3; DLYW2 accumulator pcpn 5.6

  • 16. PCKI2, a DCP in LOT’s area reports this stage data on 9/13; 13Z 5.67, 14Z 5.80, 15Z 6.20, 16Z 6.45, 17Z 7.02, 18Z 7.23

Answers b reports

Answers: .B Reports


    ABRW2 7.7/3.21//

    BEMW2 //12.3/9.5

    CFXW2 8.3/1.00Q//

    DLYW2 5.6///


  • 16. .B LOT 0913 DH13/HGIRG

    PCKI2 5.67, PCKI2 DH14/5.80, PCKI2 DH15/6.20

    PCKI2 DH16/6.45, PCKI2 DH17/7.02,

    PCKI2 DH18/7.23


The e format

The .E Format

  • Both problems 14 and 16 show that .A or .B reports can still get redundant if encode a sequence of data from the same location

  • This is why the .E format exists

  • .E SHEF reports are used for an evenly spaced sequence of data from one location

E reports

.E Reports

.E PCKI2 0913 DH13/HGIRG/DIH1/5.67/5.80/6.20

.E1 6.45/7.02/7.23

  • .E reports consist of two parts

    • Positional fields, same as .A reports

    • Data string, similar to .A reports with the addition of data interval element, DI

data string

Positional fields

Data interval

Data Interval

  • See SHEF Manual, Table 12

  • DIt±xx

    • t: the same as the date code

    • ±: the increment/decrement flag, default is increment

    • xx: the size of the interval

  • Ex:

    • DIH1 or DIN60 = one hour increment

    • DIH-1 or DIN-60 = one hour decrement

    • DIN-15 = 15 minute decrement

    • DID+1 = 1 day increment

    • DIM2 = 2 month increment

Time interval end of month

Time Interval End of Month

  • DIE1: End of month data, user does not have to worry about the different number of days in each month

  • Ex: (previous example) encode spring monthly precipitation for ALTP1

    • .E ALTP1 0331 E DH07/PPM/DIE1/4.46/3.56/6.80



  • The first value is the at the specified time

  • The other values follow, separated by slashes

  • Values move forward in time with DIt+xx or just DItx data intervals

  • Values move backwards in time with DIt-xx data intervals

More e examples

More .E Examples

  • IFLOWS rainfall data from BALT1 on 2/26 was 1800Z 0, 1745Z 0, 1730Z 0.04, 1715 M, 1700Z 0.08

    • .E BALT1 0226 DH18/PPCRP/DIN-15/0/0.04/M/0.08

  • River forecast issued at 4/4 14Z for MLPK2 at 12Z for the next three days: 12.4, 13.4, 15.6

    • .E MLPK2 0405 DH12/DC0504041400/HGIFF/DID1/12.4

      .E1 13.4/15.6

Quick quiz e reports

Quick Quiz: .E Reports

  • 14. (again) Hourly river readings for PTTP1 on 8/9 starting at 18Z: 9.45, 9.47, 9.50, 9.53

  • 17. Hourly rainfall at YCTA3 for the last 5 hours ending at 00Z on 9/1 was all zeros.

  • 18. The 3 hour hydrograph for HMAC2, a DCP, starting on 11/30 00Z was 12.3, 14.5, 17.8, 22.3, 24.5, 24.3; the crest was 25.1 at 11/30 1430Z

Answers e reports

Answers: .E Reports

  • 14. .E PTTP1 0809 DH18/HG/DIH1/9.45/9.47/9.50

    .E1 9.53

  • 17. .E YCTA3 0901 DH00/PPH/DIN-1/0/0/0/0/0

  • 18. .E HMAC2 1130 DH00/HGIRG/DIH3/12.3/14.5 .E1 17.8/22.3/24.5/24.3

    .A HMAC2 1130 DH1430/HGIRGX 25.1

    • We must use .A to encode the crest

Shef decoding

SHEF Decoding

  • Once you know how to encode SHEF, decoding is easy

  • Try to decode the following…

Quick quiz decoding

Quick Quiz: Decoding

  • 19..A TELI3 0803 E DH18/PP 0/TA 70/TX 85/TN 62

  • 20. .BR LMK 1123 DH12/PPD/HP/HT/QT

    GRLK2 0/676.41/596.78/1.030

    NOLK2 0.50/495.78/M/0.103


  • 21. .E DURW3 0712 DH18/DC0507121515/HGIFF/DIH06


  • 22. .A MELO1 0912 DH18/HPIRG 15.3/HTIRG 20.3

    TWIRG 75.0/TAIRG 82

Answers decoding

Answers: Decoding

  • 19. Aug. 3, 18 EDT for TELI3

    • 24 hour precipitation 0, current temperature 70 °F, 24 hour maximum temperature 85 °F, 24 hour minimum temperature 62 °F

  • 20. Collective from LMK for Nov. 23, 12Z

    • GRLK2: 24 hour precip 0, pool elevation 676.41 feet, tailwater elevation 596.78 feet, total flow 1.030 kcfs

    • NOLK2: 24 hour precip 0.50 inches, pool 495.78, missing tailwater, total flow .103 kcfs

Answers decoding1

Answers: Decoding

  • 21. Forecast gage height including QPF for DURW3 created on Jul. 12 at 15:15Z

    • 07/12 18Z 8.3 feet, 07/13 00Z 7.8, 06Z 7.4, 12Z 7.2

  • 22. DCP report from MELO1 for Sep. 12 18Z

    • Pool 15.3, tailwater 20.3, water temp 75, air temp 82

In conclusion

In Conclusion

  • There are three different types of SHEF reports (.A, .B, and .E) which are used for different types of data

  • You can encode any data in .A but collectives are easier using .B and evenly spaced data intervals are easier using .E

  • Practice makes perfect, try encoding and decoding different types of data

  • You can send test SHEF messages only to your own AWIPS database by creating the message in a text window and using File/Export to File; /data/fxa/ispan/hydro/test

  • The SHEF Manual is the standard resource for all SHEF questions, get to know it

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