Alert archive / Missouri / Red Flag Warnings in 2012
Red Flag Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Mar 4, 2012, 4:03 AM CST for 4 counties in Missouri. It took effect at Mar 4, 2012, 12:00 PM CST. It was in force for 5 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
- Mar 4, 2012, 4:03 AM CST (10:03 UTC)
- In effect from
- Mar 4, 2012, 12:00 PM CST
- Expired
- Mar 4, 2012, 5:23 PM CST
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
Counties Dent County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO
The radar
The St Louis radar (KLSX), 136 km from the middle of the area, began a volume at 10:00 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 10.1 hours before the alert went out and 267 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
- 2019 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
675 WWUS83 KLSX 041003 RFWLSX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 403 AM CST SUN MAR 4 2012 MOZ083>085-099-050000- /O.NEW.KLSX.FW.W.0002.120304T1800Z-120305T0000Z/ DENT MO-IRON MO-MADISON MO-REYNOLDS MO- 403 AM CST SUN MAR 4 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF SOUTHEAST MISSOURI... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING. * AFFECTED AREA...IN MISSOURI...FIRE WEATHER ZONES 083...084... 085 AND 099. * 20FT WINDS...WEST AROUND 15 MPH WITH GUSTS UP TO 25 MPH. * RELATIVE HUMIDITY...AS LOW AS 23 PERCENT. * 10HR FUELS...7 TO 8 PERCENT * IMPACTS...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. && $$ BRITT
1 follow-up statement
120 WWUS83 KLSX 042323 RFWLSX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 523 PM CST SUN MAR 4 2012 MOZ083>085-099-050030- /O.CAN.KLSX.FW.W.0002.000000T0000Z-120305T0000Z/ DENT MO-IRON MO-MADISON MO-REYNOLDS MO- 523 PM CST SUN MAR 4 2012 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED THE RED FLAG WARNING. RELATIVE HUMIDITY VALUES HAVE INCREASED ABOVE 25 PERCENT THIS EVENING. $$ CVKING
Nearby
Red Flag Warnings in Missouri, 2012Every red flag warning in 2012
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; radar from the NEXRAD Level II archive.