Alert archive / Missouri / Red Flag Warnings in 2020
Red Flag Warning 3, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Oct 14, 2020, 4:01 AM CDT for 18 counties in Missouri; 8 counties in Illinois. It took effect at Oct 14, 2020, 1:00 PM CDT. 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
- Oct 14, 2020, 4:01 AM CDT (09:01 UTC)
- In effect from
- Oct 14, 2020, 1:00 PM CDT
- Expired
- Oct 14, 2020, 6:00 PM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
All 26 counties
Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Montgomery County, IL, Saint Clair County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 25 km from the middle of the area, began a volume at 09:02 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, 9.0 hours before the alert went out and 261 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
- 2831 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
064 WWUS83 KLSX 140901 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 401 AM CDT Wed Oct 14 2020 ILZ064-065-095>097-MOZ027-034>036-141015- /O.CAN.KLSX.FW.A.0002.201014T1700Z-201014T2300Z/ Adams IL-Bond IL-Brown IL-Fayette IL-Marion MO-Monroe MO-Pike IL- Pike MO-Ralls MO- 401 AM CDT Wed Oct 14 2020 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS... The National Weather Service in Saint Louis has cancelled the Fire Weather Watch. Relative humidity levels are not expected to fall below 25 percent this afternoon, therefore red flag conditions will not be met. However, minimum relative humidity of 25 to 30 percent is likely, along with sustained winds higher than 15 mph and dry fuels. This will produce heightened fire danger for the area. $$ ILZ058>060-098>102-MOZ041-042-047>052-059>065-072-073-083-142300- /O.UPG.KLSX.FW.A.0002.201014T1700Z-201014T2300Z/ /O.NEW.KLSX.FW.W.0003.201014T1800Z-201014T2300Z/ Audrain MO-Boone MO-Calhoun IL-Callaway MO-Cole MO-Crawford MO- Dent MO-Franklin MO-Gasconade MO-Greene IL-Jefferson MO-Jersey IL- Lincoln MO-Macoupin IL-Madison IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Saint Charles MO- Saint Clair IL-Saint Louis City MO-Saint Louis MO-Warren MO- Washington MO- 401 AM CDT Wed Oct 14 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL AND EASTERN MISSOURI AS WELL AS SOUTHWEST AND SOUTH CENTRAL ILLINOIS... The National Weather Service in Saint Louis has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM this afternoon to 6 PM CDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Illinois, Fire Weather Zones 058, 059, 060, 098, 099, 100, 101 and 102. In Missouri, Fire Weather Zones 041, 042, 047, 048, 049, 050, 051, 052, 059, 060, 061, 062, 063, 064, 065, 072, 073 and 083. * 20 FOOT WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 21 percent. * 10 HOUR FUELS...Less than 9 percent. * IMPACTS...These conditions are conducive for the rapid spread and growth of uncontrolled wildfires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and dry fuels can contribute to extreme fire behavior. && $$ Carney
2 follow-up statements
686 WWUS83 KLSX 141936 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 236 PM CDT Wed Oct 14 2020 ILZ058>060-098>102-MOZ041-042-047>052-059>065-072-073-083-142300- /O.CON.KLSX.FW.W.0003.000000T0000Z-201014T2300Z/ Audrain MO-Boone MO-Calhoun IL-Callaway MO-Cole MO-Crawford MO- Dent MO-Franklin MO-Gasconade MO-Greene IL-Jefferson MO-Jersey IL- Lincoln MO-Macoupin IL-Madison IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Saint Charles MO- Saint Clair IL-Saint Louis City MO-Saint Louis MO-Warren MO- Washington MO- 236 PM CDT Wed Oct 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL AND EASTERN MISSOURI AS WELL AS SOUTHWEST AND SOUTH CENTRAL ILLINOIS * AFFECTED AREA...In Illinois, Fire Weather Zones 058, 059, 060, 098, 099, 100, 101 and 102. In Missouri, Fire Weather Zones 041, 042, 047, 048, 049, 050, 051, 052, 059, 060, 061, 062, 063, 064, 065, 072, 073 and 083. * 20 FOOT WINDS...Southwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 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. && $$ Glass
927 WWUS83 KLSX 142300 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 600 PM CDT Wed Oct 14 2020 ILZ058>060-098>102-MOZ041-042-047>052-059>065-072-073-083-150000- /O.EXP.KLSX.FW.W.0003.000000T0000Z-201014T2300Z/ Audrain MO-Boone MO-Calhoun IL-Callaway MO-Cole MO-Crawford MO- Dent MO-Franklin MO-Gasconade MO-Greene IL-Jefferson MO-Jersey IL- Lincoln MO-Macoupin IL-Madison IL-Moniteau MO-Monroe IL- Montgomery IL-Montgomery MO-Osage MO-Saint Charles MO- Saint Clair IL-Saint Louis City MO-Saint Louis MO-Warren MO- Washington MO- 600 PM CDT Wed Oct 14 2020 ...RED FLAG WARNING WILL EXPIRE AT 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF WEST CENTRAL ILLINOIS AND EASTERN/CENTRAL MISSOURI... Wind speeds are expected to diminish quickly this evening, and relative humidity will quickly recover as temperatures drop. As such, conditions are expected to improve quickly during the evening hours. $$ 19
Nearby
Red Flag Warnings in Missouri, 2020Red Flag Warnings in Illinois, 2020Every red flag warning in 2020
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.