Alert archive / Missouri / Red Flag Warnings in 2017
Red Flag Warning 4, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Mar 8, 2017, 3:30 AM CST for 14 counties in Missouri; 7 counties in Illinois. It took effect at Mar 8, 2017, 11:00 AM CST. 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
- Mar 8, 2017, 3:30 AM CST (09:30 UTC)
- In effect from
- Mar 8, 2017, 11:00 AM CST
- Expired
- Mar 8, 2017, 6:27 PM CST
- In force
- 7 hr
- Issued by
- NWS St. Louis, MO
All 21 counties
Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 98 km from the middle of the area, began a volume at 09:35 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
Lincoln, IL (KILX), launched 00:00Z, 9.5 hours before the alert went out and 256 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
- 2 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 2781 m above ground
- 0-6 km bulk shear
- 102 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
900 WWUS83 KLSX 080930 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 330 AM CST Wed Mar 8 2017 MOZ026-027-034-035-041-042-047-048-050-051-082300- /O.NEW.KLSX.FW.W.0004.170308T1700Z-170309T0100Z/ Audrain MO-Boone MO-Callaway MO-Cole MO-Marion MO-Moniteau MO- Monroe MO-Montgomery MO-Ralls MO-Shelby MO- 330 AM CST Wed Mar 8 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND CENTRAL MISSOURI... The National Weather Service in Saint Louis has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM this morning to 7 PM CST this evening. * AFFECTED AREA...In Missouri, Fire Weather Zones 026, 027, 034, 035, 041, 042, 047, 048, 050 and 051. * 20 FOOT WINDS...Southwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 17 percent. * 10 HOUR FUELS...Less than 9 percent. * IMPACTS...These conditions are conducive for the rapid spread and growth of uncontrolled 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 dry fuels can contribute to extreme fire behavior. && $$ TES
2 follow-up statements
635 WWUS83 KLSX 081644 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 1044 AM CST Wed Mar 8 2017 ILZ058-059-095>099-MOZ018-019-036-052-090100- /O.EXA.KLSX.FW.W.0004.170308T1700Z-170309T0100Z/ Adams IL-Brown IL-Calhoun IL-Greene IL-Jersey IL-Knox MO-Lewis MO- Lincoln MO-Macoupin IL-Pike IL-Pike MO- 1044 AM CST Wed Mar 8 2017 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS... The National Weather Service in Saint Louis has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 7 PM CST this evening. * AFFECTED AREA...In Illinois, Fire Weather Zones 058, 059, 095, 096, 097, 098 and 099. In Missouri, Fire Weather Zones 018, 019, 036 and 052. * 20 FOOT WINDS...West 12 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent. * 10 HOUR FUELS...Less than 9 percent. * IMPACTS...These conditions are conducive for the rapid spread and growth of uncontrolled wildfires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and dry fuels can contribute to extreme fire behavior. && $$ MOZ026-027-034-035-041-042-047-048-050-051-090100- /O.CON.KLSX.FW.W.0004.170308T1700Z-170309T0100Z/ Audrain MO-Boone MO-Callaway MO-Cole MO-Marion MO-Moniteau MO- Monroe MO-Montgomery MO-Ralls MO-Shelby MO- 1044 AM CST Wed Mar 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF CENTRAL AND NORTHEAST MISSOURI... * AFFECTED AREA...In Missouri, Fire Weather Zones 026, 027, 034, 035, 041, 042, 047, 048, 050 and 051. * 20 FOOT WINDS...Southwest 12 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 13 percent. * 10 HOUR FUELS...Less than 9 percent. * IMPACTS...These conditions are conducive for the rapid spread and growth of uncontrolled 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 dry fuels can contribute to extreme fire behavior. && $$ Glass
538 WWUS83 KLSX 090027 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 627 PM CST Wed Mar 8 2017 ILZ058-059-095>099-MOZ018-019-026-027-034>036-041-042-047-048- 050>052-090130- /O.CAN.KLSX.FW.W.0004.000000T0000Z-170309T0100Z/ Adams IL-Audrain MO-Boone MO-Brown IL-Calhoun IL-Callaway MO- Cole MO-Greene IL-Jersey IL-Knox MO-Lewis MO-Lincoln MO- Macoupin IL-Marion MO-Moniteau MO-Monroe MO-Montgomery MO-Pike IL- Pike MO-Ralls MO-Shelby MO- 627 PM CST Wed Mar 8 2017 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS... The National Weather Service in Saint Louis has cancelled the Red Flag Warning. Wind speed has dropped significantly over the past two hours ending the critical fire weather conditions. Therefore the red flag warning is cancelled. $$ Carney
Nearby
Red Flag Warnings in Missouri, 2017Red Flag Warnings in Illinois, 2017Every red flag warning in 2017
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.