Alert archive / Missouri / Red Flag Warnings in 2018
Red Flag Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Mar 6, 2018, 3:25 AM CST for 7 counties in Missouri. It took effect at Mar 6, 2018, 9:00 AM CST. It was in force for 9 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 6, 2018, 3:25 AM CST (09:25 UTC)
- In effect from
- Mar 6, 2018, 9:00 AM CST
- Expired
- Mar 6, 2018, 6:00 PM CST
- In force
- 9 hr
- Issued by
- NWS St. Louis, MO
Counties Crawford County, MO, Dent County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 116 km from the middle of the area, began a volume at 09:27 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, 9.4 hours before the alert went out and 272 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
- 2383 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
866 WWUS83 KLSX 060925 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 325 AM CST Tue Mar 6 2018 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR MUCH OF TODAY... MOZ072>074-083>085-099-062130- /O.NEW.KLSX.FW.W.0002.180306T1500Z-180307T0000Z/ Crawford MO-Dent MO-Iron MO-Madison MO-Reynolds MO- Saint Francois MO-Washington MO- 325 AM CST Tue Mar 6 2018 ...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF 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 from 9 AM this morning to 6 PM CST this evening. * AFFECTED AREA...In Missouri, Fire Weather Zones 072, 073, 074, 083, 084, 085 and 099. * 20 FOOT WINDS...West 15 to 30 mph with gusts up to 45 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. && $$ TES
2 follow-up statements
556 WWUS83 KLSX 062150 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 350 PM CST Tue Mar 6 2018 MOZ072>074-062300- /O.CAN.KLSX.FW.W.0002.000000T0000Z-180307T0000Z/ Crawford MO-Saint Francois MO-Washington MO- 350 PM CST Tue Mar 6 2018 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF SOUTHEAST MISSOURI... The National Weather Service in Saint Louis has cancelled the Red Flag Warning. Relative humidity values have risen above 30 percent, ending the threat for rapid fire growth. $$ MOZ083>085-099-070000- /O.CON.KLSX.FW.W.0002.000000T0000Z-180307T0000Z/ Dent MO-Iron MO-Madison MO-Reynolds MO- 350 PM CST Tue Mar 6 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF SOUTHEAST MISSOURI... * AFFECTED AREA...In Missouri, Fire Weather Zones 083, 084, 085 and 099. * 20 FOOT WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 25 percent. * 10 HOUR FUELS...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. && $$ Tilly
882 WWUS83 KLSX 062359 RFWLSX URGENT - FIRE WEATHER MESSAGE National Weather Service Saint Louis MO 559 PM CST Tue Mar 6 2018 MOZ083>085-099-070100- /O.EXP.KLSX.FW.W.0002.000000T0000Z-180307T0000Z/ Dent MO-Iron MO-Madison MO-Reynolds MO- 559 PM CST Tue Mar 6 2018 ...RED FLAG WARNING WILL EXPIRE AT 6 PM CST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF SOUTHEAST MISSOURI... The relative humidity has increased reducing the threat for uncontrolled wildfires. $$ Britt
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 3:25 AM CST | Wind Advisory | LSX | Boone, Callaway, Cole, Crawford, Gasconade, Iron and 7 more | 15 hr |
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.