Alert archive / Missouri / Red Flag Warnings in 2011
Red Flag Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Apr 5, 2011, 12:25 PM CDT for 5 counties in Missouri. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 5, 2011, 12:25 PM CDT (17:25 UTC)
- Expired
- Apr 5, 2011, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS St. Louis, MO
Counties Boone County, MO, Callaway County, MO, Cole County, MO, Moniteau County, MO, Osage County, MO
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 5.4 hours before the alert went out and 244 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2390 m above ground
- 0-6 km bulk shear
- 96 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
363 WWUS83 KLSX 051725 RFWLSX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 1225 PM CDT TUE APR 5 2011 MOZ041-047>050-060000- /O.NEW.KLSX.FW.W.0002.110405T1725Z-110406T0000Z/ BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO- 1225 PM CDT TUE APR 5 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. THE COMBINATION OF VERY DRY FUELS...SUSTAINED WINDS IN EXCESS OF 15 MPH...AND VERY LOW RELATIVE HUMIDITIES WILL CREATE CRITICAL FIRE WEATHER CONDITIONS ACROSS PORTIONS OF CENTRAL MISSOURI UNTIL EARLY THIS EVENING. THESE CONDITIONS ARE CONDUCIVE FOR THE RAPID SPREAD AND GROWTH OF WILDFIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ TES
1 follow-up statement
877 WWUS83 KLSX 052354 RFWLSX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 654 PM CDT TUE APR 5 2011 MOZ041-047>050-060100- /O.EXP.KLSX.FW.W.0002.000000T0000Z-110406T0000Z/ BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO- 654 PM CDT TUE APR 5 2011 ...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING... THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. THE WIND WILL SUBSIDE AND THE RELATIVE HUMIDITY WILL RISE THIS EVENING AS TEMPERATURES FALL. THEREFORE THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 700 PM. $$ CARNEY
Nearby
Red Flag Warnings in Missouri, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.