Alert archive / Missouri / Red Flag Warnings in 2020
Red Flag Warning 5, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Nov 19, 2020, 3:25 AM CST for 6 counties in Illinois; 17 counties in Missouri. It took effect at Nov 19, 2020, 12:00 PM CST. It was in force for 5 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 19, 2020, 3:25 AM CST (09:25 UTC)
- In effect from
- Nov 19, 2020, 12:00 PM CST
- Expired
- Nov 19, 2020, 5:00 PM CST
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
All 23 counties
Clinton County, IL, Madison County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Osage County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 53 km from the middle of the area, began a volume at 09:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 19, 1:30 PM CST | NON-TSTM WND GST 40 | Freeburg, IL | PEAK WIND GUST REPORTED AT THE FREEBURG USDA SITE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.4 hours before the alert went out and 277 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
- 2453 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 625 m²/s²
- 0-3 km storm-relative helicity
- 751 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
870 WWUS83 KLSX 190925 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 325 AM CST Thu Nov 19 2020 ILZ069-074-079-100>102-MOZ048-049-059>065-072>075-083>085-099- 192130- /O.NEW.KLSX.FW.W.0005.201119T1800Z-201119T2300Z/ Clinton IL-Cole MO-Crawford MO-Dent MO-Franklin MO-Gasconade MO- Iron MO-Jefferson MO-Madison IL-Madison MO-Monroe IL-Osage MO- Randolph IL-Reynolds MO-Saint Charles MO-Saint Clair IL- Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Warren MO-Washington IL-Washington MO- 325 AM CST Thu Nov 19 2020 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 5 PM CST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL, EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS SOUTHWEST 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 noon today to 5 PM CST this afternoon. * AFFECTED AREA...In Illinois, Fire Weather Zones 069, 074, 079, 100, 101 and 102. In Missouri, Fire Weather Zones 048, 049, 059, 060, 061, 062, 063, 064, 065, 072, 073, 074, 075, 083, 084, 085 and 099. * 20 FOOT WINDS...South 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 24 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. && $$ Carney
2 follow-up statements
646 WWUS83 KLSX 192100 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 300 PM CST Thu Nov 19 2020 ILZ069-074-079-100>102-MOZ048-049-059>065-072>075-083>085-099- 192300- /O.CON.KLSX.FW.W.0005.000000T0000Z-201119T2300Z/ Clinton IL-Cole MO-Crawford MO-Dent MO-Franklin MO-Gasconade MO- Iron MO-Jefferson MO-Madison IL-Madison MO-Monroe IL-Osage MO- Randolph IL-Reynolds MO-Saint Charles MO-Saint Clair IL- Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Warren MO-Washington IL-Washington MO- 300 PM CST Thu Nov 19 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM CST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL, EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS SOUTHWEST ILLINOIS... * AFFECTED AREA...In Illinois, Fire Weather Zones 069, 074, 079, 100, 101 and 102. In Missouri, Fire Weather Zones 048, 049, 059, 060, 061, 062, 063, 064, 065, 072, 073, 074, 075, 083, 084, 085 and 099. * 20 FOOT WINDS...South 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 20 percent. * 10 HOUR FUELS...Less than 9 percent. * IMPACTS...These conditions are conducive for the rapid spread and growth of uncontrolled wildfires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and dry fuels can contribute to extreme fire behavior. && $$ Glass
940 WWUS83 KLSX 192313 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 513 PM CST Thu Nov 19 2020 ILZ069-074-079-100>102-MOZ048-049-059>065-072>075-083>085-099- 200015- /O.EXP.KLSX.FW.W.0005.000000T0000Z-201119T2300Z/ Clinton IL-Cole MO-Crawford MO-Dent MO-Franklin MO-Gasconade MO- Iron MO-Jefferson MO-Madison IL-Madison MO-Monroe IL-Osage MO- Randolph IL-Reynolds MO-Saint Charles MO-Saint Clair IL- Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Warren MO-Washington IL-Washington MO- 513 PM CST Thu Nov 19 2020 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL AND SOUTHEAST MISSOURI AND SOUTHWEST ILLINOIS... The Red Flag Warning has been allowed to expire as winds gradually weaken and relative humidity slowly increases this evening, lessening the threat for the rapid spread and growth of uncontrolled wildfires. $$ GKS
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.