Alert archive / Missouri / Red Flag Warnings in 2018
Red Flag Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Feb 3, 2018, 9:58 AM CST for 16 counties in Missouri. It was in force for 8 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
- Feb 3, 2018, 9:58 AM CST (15:58 UTC)
- Expired
- Feb 3, 2018, 6:00 PM CST
- In force
- 8 hr
- Issued by
- NWS St. Louis, MO
Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Lincoln County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 85 km from the middle of the area, began a volume at 16:02 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
Springfield, MO (KSGF), launched 12:00Z, 4.0 hours before the alert went out and 280 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
- 2730 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
177 WWUS83 KLSX 031558 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 958 AM CST Sat Feb 3 2018 MOZ034>036-041-042-047>052-059-060-062-072-083-040000- /O.NEW.KLSX.FW.W.0001.180203T1600Z-180204T0000Z/ Audrain MO-Boone MO-Callaway MO-Cole MO-Crawford MO-Dent MO- Franklin MO-Gasconade MO-Lincoln MO-Moniteau MO-Monroe MO- Montgomery MO-Osage MO-Pike MO-Ralls MO-Warren MO- 958 AM CST Sat Feb 3 2018 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI... The National Weather Service in Saint Louis has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 6 PM CST this evening. * AFFECTED AREA...In Missouri, Fire Weather Zones 034, 035, 036, 041, 042, 047, 048, 049, 050, 051, 052, 059, 060, 062, 072 and 083. * 20 FOOT WINDS...South 10 to 20 mph with gusts up to 30 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. && $$
1 follow-up statement
872 WWUS83 KLSX 040016 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 616 PM CST Sat Feb 3 2018 MOZ034>036-041-042-047>052-059-060-062-072-083-040130- /O.EXP.KLSX.FW.W.0001.000000T0000Z-180204T0000Z/ Audrain MO-Boone MO-Callaway MO-Cole MO-Crawford MO-Dent MO- Franklin MO-Gasconade MO-Lincoln MO-Moniteau MO-Monroe MO- Montgomery MO-Osage MO-Pike MO-Ralls MO-Warren MO- 616 PM CST Sat Feb 3 2018 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL AND EASTERN MISSOURI... The relative humidity was slowly rising, while the surface winds were decreasing in strength, ending the Red Flag Warning conditions over the area. $$ GKS
Nearby
Red Flag Warnings in Missouri, 2018Every red flag warning in 2018
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.