Alert archive / Illinois / Red Flag Warnings in 2007
Red Flag Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this red flag warning at Oct 21, 2007, 5:25 AM CDT for 14 counties in Illinois; 8 counties in Missouri. It took effect at Oct 21, 2007, 1:00 PM CDT. It was in force for 6 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 21, 2007, 5:25 AM CDT (10:25 UTC)
- In effect from
- Oct 21, 2007, 1:00 PM CDT
- Expired
- Oct 21, 2007, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
All 22 counties
Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 46 km from the middle of the area, began a volume at 10:26 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, 10.4 hours before the alert went out and 206 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
- 2574 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 346 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS83 KLSX 211025 RFWLSX RED FLAG WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 525 AM CDT SUN OCT 21 2007 ILZ058>060-064-065-069-070-074-079-098>102-MOZ052-059>065-212100- /O.NEW.KLSX.FW.W.0001.071021T1800Z-071022T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-CALHOUN IL-JERSEY IL- MADISON IL-ST. CLAIR IL-MONROE IL-LINCOLN-GASCONADE-WARREN- ST. CHARLES-FRANKLIN-ST. LOUIS-ST. LOUIS CITY-JEFFERSON- 525 AM CDT SUN OCT 21 2007 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING. THE COMBINATION OF UNSEASONABLY WARM TEMPERATURES IN THE 80S... VERY LOW AFTERNOON RELATIVE HUMIDITIES BELOW 25 PERCENT...VERY DRY FUELS...AND STRONG SOUTHERLY WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 TO 40 MPH WILL CREATE DANGEROUS FIRE WEATHER CONDITIONS THIS AFTERNOON AND EARLY THIS EVENING. IN ADDITION...THESE CONDITIONS ARE OCCURRING OVER AREAS THAT HAVE EXPERIENCED DROUGHT FOR MUCH OF THE SUMMER AND EARLY AUTUMN AND CONTINUE TO HAVE RAINFALL DEFICITS FOR THE YEAR. CONDITIONS ARE EXPECTED TO RAPIDLY IMPROVE THIS EVENING AS RELATIVE HUMIDITIES RISE AND WINDS DIMINISH. 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 WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. $$ TES
1 follow-up statement
000 WWUS83 KLSX 220017 RFWLSX RED FLAG WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 717 PM CDT SUN OCT 21 2007 ILZ058>060-064-065-069-070-074-079-098>102-MOZ052-059>065-220130- /O.EXP.KLSX.FW.W.0001.000000T0000Z-071022T0000Z/ GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-CALHOUN IL-JERSEY IL- MADISON IL-ST. CLAIR IL-MONROE IL-LINCOLN-GASCONADE-WARREN- ST. CHARLES-FRANKLIN-ST. LOUIS-ST. LOUIS CITY-JEFFERSON- 717 PM CDT SUN OCT 21 2007 ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. WINDS WILL CONTINUE TO SLOWLY DECREASE AND THE RELATIVE HUMIDITY WILL RISE THROUGH THE EVENING HOURS DIMINISHING THE RISK OF WILDFIRES. $$ BRITT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 7:49 AM CDT | Wind Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 10 more | 5 hr |
Nearby
Red Flag Warnings in Illinois, 2007Red Flag Warnings in Missouri, 2007Every red flag warning in 2007
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.