inside information a new nws communication tool and its benefits to the warning system l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Inside Information: A New NWS Communication Tool and its Benefits to the Warning System PowerPoint Presentation
Download Presentation
Inside Information: A New NWS Communication Tool and its Benefits to the Warning System

Loading in 2 Seconds...

play fullscreen
1 / 27

Inside Information: A New NWS Communication Tool and its Benefits to the Warning System - PowerPoint PPT Presentation


  • 162 Views
  • Uploaded on

Inside Information: A New NWS Communication Tool and its Benefits to the Warning System. Gary Woodall NWS Forecast Office Fort Worth, TX www.srh.noaa.gov/fwd. Kristine Kahanek KTVT-TV Fort Worth, TX www.ktvt.com. Coordination Products.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

Inside Information: A New NWS Communication Tool and its Benefits to the Warning System


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
inside information a new nws communication tool and its benefits to the warning system

Inside Information:A New NWS Communication Tool and its Benefits to the Warning System

Gary Woodall

NWS Forecast Office

Fort Worth, TX

www.srh.noaa.gov/fwd

Kristine Kahanek

KTVT-TV

Fort Worth, TX

www.ktvt.com

coordination products
Coordination Products
  • Warning Decision Update and Significant Weather Update
  • Originally developed by WFO Norman, OK
    • M. Foster, D. Andra, R. Smith
  • WDU - “Area Forecast Discussion” for warning operations – WMO header FLUS74 KFWD
  • SWU – Strong but non-svr storms, or downstream “heads up” for svr storms – WMO header WWUS84 KFWD
  • Typically issued by “Warning Coordinator”
  • Issued every 60-90 minutes, staffing and resources permitting
warning decision update
Warning Decision Update

AREA WEATHER UPDATE

NATIONAL WEATHER SERVICE FORT WORTH TX

355 PM CDT WED JUL 7 2004

…WARNING DECISION UPDATE FOR NORTH TEXAS…

CLUSTER OF TSTMS CONTS JUST AHEAD OF MID LEVEL CONVECTIVE VORT MAX OVER CORYELL/BOSQUE COUNTIES. VOL-Z SUGGESTS HVY RAIN/POSSIBLY SOME SMALL HAIL. DESPITE WARM TEMPS/RICH MOISTURE AHEAD OF STORMS AND DECENT SURFACE INFLOW…THEY HAVE HAD A DIFFICULT TIME SUSTAINING STRONG UPDRAFTS. POSSIBLY DUE TO WEAK STORM-RELATIVE MID-LEVEL WINDS. WITH ANOTHER HOUR OR SO OF HEATING…WILL NEED TO MONITOR THESE STORMS FOR FURTHER DEVELOPMENT.

WOODALL

THIS IS AN EXPERIMENTAL PRODUCT MEANT TON INCREASE INFORMATION EXCHANGE ON THE STORM SCALE DURING WARNING OPERATIONS…AND MAY NOT BE ISSUED DURING EVERY WARNING EVENT.

<GLOSSARY OF COMMONLY-USED ABBREVIATIONS>

june 1 2004 synoptic setup
June 1, 2004 Synoptic Setup

Distinct dryline/mesolow over NW Texas

Subtle outflow boundary E-SE from mesolow

L

Moist axis at surface and 850 mb

35 kt winds from northwest at 500 mb

90-kt winds from west at 200 mb

kfwd skew t 00z 6 2 04
KFWD Skew-T, 00Z 6/2/04

Extreme instability

Pronounced veering

Modest mid-level winds

Weak surface winds

Favored HP supercells

CAPE: 3936 j/kgLI: -12.60-3 KM SREH: 201 m2/s2

wdu 3 28 pm cdt
WDU – 3:28 PM CDT

“TCU/CB DEVELOPING ALONG DRYLINE. LOW LEVEL WINDS FAIRLY WEAK BUT EXTREME INSTABILITY… CAPES 4000+ SUGGESTS STORMS WILL GO SVR QUICKLY. GIANT HAIL AND AT LEAST A MINIMAL TORNADO POTENTIAL WILL EXIST…STORMS WHICH PROPAGATE ALONG BOUNDARY W-S OF METROPLEX WILL HAVE INCREASED TORNADO POTENTIAL. STORMS INITIALLY IN ENVIRONMENT WITH 40+ T/TD SPREADS…SUGGESTING DOWNBURSTS/HAIL PRIMARY THREATS. TORNADO THREAT MAY INCRS IF/AS STORMS MOVE INTO HIGHER TD AIR AND LOWER CLOUD BASES.”

fort worth wsr 88d loop
Fort Worth WSR-88D Loop

4:20 PM

To

4:40 PM

wdu 4 40 pm cdt
WDU – 4:40 PM CDT

“SVR MULTICELL CLUSTER STORMS OVER COMANCHE/ ERATH CO. STORMS WILL BE MOVING INTO AN INCREASINGLY MOIST/UNSTABLE AIRMASS THROUGH 600 PM…WHICH SHOULD ALSO RESULT IN LOWER CLOUD BASES. VOL-Z SUGGESTS 1-1.5 INCH HAIL BUT ALGORITHMS SEEM TO BE OVERESTIMATING HAIL SIZE SLIGHTLY. STORMS ARE MOVING INTO A LOCAL INSTABILITY MAX AND SREH FAVORABLE FOR SOME STORM ROTATION. ALSO WILL HAVE TO WATCH CAREFULLY STORMS APRCHG OLD BOUNDARY W-S OF METROPLEX.”

fort worth wsr 88d loop11
Fort Worth WSR-88D Loop

5:45 PM

To

8:59 PM

fort worth wsr 88d loop12
Fort Worth WSR-88D Loop

5:35 PM

To

5:55 PM

wdu 5 57 pm cdt
WDU – 5:57 PM CDT

“STMS W AND SW OF METROPLEX MOVING INTO MORE MOIST AIRMASS. WILL WATCH STORM MOVG INTO HOOD CO ESPECIALLY CLOSELY AS IT MAY BE PROPAGATING ALONG OLD BOUNDARY. STORM OVER HAMILTON HAS IMPRESSIVE VOL-Z SUPPORTING GOLFBALL SIZE HAIL. LEFT-MOVER OVER N PARKER MOVING TOWARD WISE CO HAS BROAD ANTICYCLONIC ROTATION AT MID LEVELS. STM MAY HAVE A BIGGER SVR WIND THREAT DUE TO FASTER FORWARD MOTION.”

view from parker county
View From Parker County

Looking West Photo: Mike Theiss

slide19

Fort Worth WSR-88D Loop

6:59 PM

To

7:24 PM

wdu 7 25 pm cdt
WDU – 7:25 PM CDT

“WISE/JACK CO STORM STILL HAS LARGE CORE AND VOL-Z STRUCTURE SUGGESTING AT LEAST GOLFBALL SIZE HAIL…SE ACCELERATION MAY RESULT IN FORWARD-PROPAGATING CLUSTER…WHICH WILL REDUCE TORNADO THREAT BUT PERHAPS INCREASE DAMAGING WIND THREAT. SMALLER STORM OVER DENTON CO HAS ANTICYCLONIC ROTATION…ASSISTING WITH UPDRAFT STRENGTH/HAIL PRODUCTION. 00Z KFWS RAOB SHOWS…PRONOUNCED VEERING WHICH MAY CONTINUE SVR THREAT NEXT COUPLE OF HOURS.”

fort worth wsr 88d loop22
Fort Worth WSR-88D Loop

7:54 PM

To

8:19 PM

wdu 8 18 pm cdt
WDU – 8:18 PM CDT

“HP SUPERCELL OVER N PARKER CONTS TRACKING SLOWLY SE. VOL-Z SUGGESTS LARGER THAN GOLFBALL HAIL AND SPOTTERS SUPPORT THIS. STORM MAY BE TRACKING ALONG OLD BOUNDARY…STORMS HAVE MODERATE-STRONG MID-LEVEL ROTATION… SOME CONVERGENCE ALONG SOUTH FLANKS AS WELL. ENVIRONMENT CONTS FAVORABLE FOR STORM ROTATION WITH VEERING WIND PROFILE AND STRONG INSTABILITY.”

im vs wdu
IM vs. WDU

Immediate access for a group of users

Accessible by a wider array of users

Two-way communication and feedback

Greater detail and depth of discussion possible

More of a time/workload commitment

No means of direct feedback

A market exists for both coordination methods!

summary conclusions
Summary/Conclusions
  • WDUs close the “information gap” between the NWS’ thoughts and their public products
  • WDUs provide detailed analysis for use by EMC and media staffs who may not have time for their own analyses
  • WDUs can contain spotter reports which can be quickly relayed to viewers and warning officials
  • WDUs help ensure a consistent warning message
questions contact us

Kristine Kahanek

KTVT-TV

P.O. Box 2495

Fort Worth, TX 76113

817-451-1111

E-mail: kristinek@ktvt.com

Internet: www.ktvt.com

Gary Woodall

National Weather Service

3401 Northern Cross Blvd.

Fort Worth, TX 76137

817-429-2631

E-mail: gary.woodall@noaa.gov

Internet: www.srh.noaa.gov/fwd

Questions? Contact Us!