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Weather Briefing for The 2013 Presidential Inauguration. NOAA/ National Weather Service Baltimore/Washington Weather Forecast Office January 20, 2013 2000 UTC/3:00 PM EST Jim Lee Meteorologist-in-Charge. Outline. Weather Hazards Forecast Overview Forecast Tables and Graphs

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weather briefing for the 2013 presidential inauguration

Weather BriefingforThe 2013 Presidential Inauguration

NOAA/ National Weather Service

Baltimore/Washington Weather Forecast Office

January 20, 2013

2000 UTC/3:00 PM EST

Jim Lee

Meteorologist-in-Charge

outline
Outline
  • Weather Hazards
  • Forecast Overview
  • Forecast Tables and Graphs
  • Reagan and Dulles METAR & TAF
  • Illumination Data
  • Space Weather
  • Plume Modeling
  • Web Page
  • Summary of Weather Hazards
  • Briefing Schedule

NWS Baltimore/Washington Weather Forecast Office

weather hazards 2000 utc 21 jan 0000 utc 22 jan 2013 for washington d c
Weather Hazards2000 UTC 21 Jan – 0000 UTC 22 Jan 2013for Washington, D.C.

This afternoon: Gusty west winds to 30 mph through sunset

  • Small Craft Advisory until 6:00 PM EST

Monday: Scattered afternoon snow showers (40%) and colder; chance of snow squalls between 4:00 PM and 8:00 PM

  • Mostly Cloudy, highs in the lower 40s
  • Upper level disturbance could produce an organized band of snow squalls that could produce locally 1 inch of snow
  • Small Craft Advisory starts at Noon and continues through Tuesday

NWS Baltimore/Washington Weather Forecast Office

forecast overview for washington d c
Forecast Overviewfor Washington, D.C.

Normals: Hi: 43F Lo: 28F

NWS Baltimore/Washington Weather Forecast Office

weather element forecast for washington d c
Weather Element Forecastfor Washington, D.C.

NWS Baltimore/Washington Weather Forecast Office

weather element forecast for washington d c1
Weather Element Forecastfor Washington, D.C.

NWS Baltimore/Washington Weather Forecast Office

kdca metar taf ronald reagan national airport
KDCA METAR & TAFRonald Reagan National Airport

METAR

KDCA 201852Z 30016G23KT 10SM FEW250 16/M06 A2985 RMK AO2 SLP108 T01611056 $

TAF

KDCA 201912Z 2019/2118 30015G25KT P6SM FEW250

FM210000 32007KT P6SM SKC

FM210800 VRB03KT P6SM BKN250

FM211500 15010G20KT P6SM BKN250

NWS Baltimore/Washington Weather Forecast Office

kiad metar taf dulles international airport
KIAD METAR & TAFDulles International Airport

METAR

KIAD 201852Z 30020G30KT 10SM FEW050 14/M06 A2985 RMK AO2 PK WND 29030/1846 SLP108 T01391056

TAF

KIAD 201912Z 2019/2124 30017G30KT P6SM FEW050

FM202300 32010KT P6SM SKC

FM210300 32005KT P6SM SCT250

FM211600 16008KT P6SM BKN250

FM212200 20009KT P6SM BKN050

NWS Baltimore/Washington Weather Forecast Office

slide9

Illumination Data

Washington, D.C.

NWS Baltimore/Washington Weather Forecast Office

slide10

Space Weather Summary/Forecast

1640

1644

1638

1641

  • Summary/Forecast Details:
  • Region 1654 continues to decay and will begin to rotate off tomorrow
  • Currently quiet across S and G scales
  • Overall threat of significant space weather activity is low

1642

Geomagnetic Storms

Solar Flare Radio Blackouts

Joint NOAA/USAF

Space Weather Briefing

Jan. 20, 2013 - 2000 UTC

slide11

Phenomena Reference/Impacts

  • Solar Flare Radio Blackout (R Scale):
  • No advance warning
  • Effects lasts for 10’s of minutes to several hours
  • Impacts High Frequency (HF) communication on the sunlit side of the Earth
  • First indication significant S and G scale activity may be possible
  • Solar Radiation Storm (S Scale):
  • Warnings possible on the minutes to hours time scale
  • Elevated levels can persist for several days
  • Impacts to the health and operation of satellites and International Space Station operations and crew
  • Impacts High Frequency communication in the polar regions, affecting commercial airline operations
  • Geomagnetic Storm (G Scale):
  • Advance notice possible given coronal mass ejection (CME) transit times from Sun to Earth range from just under a day to several days (CMEs being the main driver of significant storms)
  • In extreme storms, impacts to power grid operations and stability
  • Impacts to Global Positioning System (GPS) accuracy and availability
  • Driver of aurora; severe to extreme storms may cause aurora to be visible over most of the lower 48

Joint NOAA/USAF

Space Weather Briefing

Jan. 20, 2013 - 0300 UTC

Complete NOAA Space Weather Scale information available online at: http://www.swpc.noaa.gov/NOAAscales/

slide12

HYSPLIT DISPERSION MODEL

1/21/13

Release at 2200Z 21 Jan 2013 (NAM)

Release at 1700Z 21 Jan 2013 (NAM)

NWS Baltimore/Washington Weather Forecast Office

noaa nws baltimore washington
NOAA/NWSBaltimore/Washington

http://www.erh.noaa.gov/washington

Always

Up-to-date

NWS Baltimore/Washington Weather Forecast Office

summary
Summary
  • Mostly clear skies overnight.
  • Inauguration Day: Mostly cloudy and colder with scattered afternoon snow showers, and a chance of snow squalls between 4:00 and 8:00 PM
    • This could produce local accumulations of snow from a dusting to less than an inch.
  • Monday Night: Chance of snow showers before midnight, then becoming mostly clear and cold with lows in the lower 20s and gusty northwest winds to 30 mph; wind chills in the lower teens

NWS Baltimore/Washington Weather Forecast Office

briefing schedule
Briefing Schedule
  • T-7 days: Tue Jan 15 1500 EST
  • T-6 days: Wed Jan 16 1500 EST
  • T-4 days: Thu Jan 17 1500 EST
  • T-3 days: Fri Jan 18 1500 EST
  • T-2 days: Sat Jan 19 1500 EST
  • T-1.5 Day: Sat Jan 19 2200 EST
  • T-1 Day: Sun Jan 20 1500 EST
  • T-14 hours: Sun Jan 20 2200 EST
  • T-12 hours: Mon Jan 21 0000 EST
  • T-9 hours: Mon Jan 21 0300 EST
  • T-6 hours: Mon Jan 21 0600 EST
  • T-3 hours: Mon Jan 21 0900 EST
  • T-1 hour: Mon Jan 21 1100 EST
  • T+2 hour: Mon Jan 21 1400 EST
  • T+5 hour: Mon Jan 21 1700 EST
  • Other times / dates as needed or requested

NWS Baltimore/Washington Weather Forecast Office

next scheduled briefing
Next Scheduled Briefing

0300 UTC/10:00 PM EST

Mon 21 Jan 2013

Thank you for your participation!

NWS Baltimore/Washington Weather Forecast Office