Alert archive / Missouri / Freeze Warnings in 2011
Freeze Warning 7, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Nov 10, 2011, 3:09 PM CST for 9 counties in Illinois; 12 counties in Missouri. It took effect at Nov 11, 2011, 12:00 AM CST. 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
- Nov 10, 2011, 3:09 PM CST (21:09 UTC)
- In effect from
- Nov 11, 2011, 12:00 AM CST
- Expired
- Nov 11, 2011, 8:00 AM CST
- In force
- 8 hr
- Issued by
- NWS St. Louis, MO
All 21 counties
Bond County, IL, Clinton County, IL, Fayette County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 21:15 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 12:00Z, 9.2 hours before the alert went out and 249 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
- 1342 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
197 WWUS73 KLSX 102109 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 309 PM CST THU NOV 10 2011 ILZ064-065-069-070-074-079-100>102-MOZ061>065-072>075-084-085-099- 111400- /O.NEW.KLSX.FZ.W.0007.111111T0600Z-111111T1400Z/ BOND IL-FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL- MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER... EDWARDSVILLE...BELLEVILLE...ST CHARLES...UNION...ST LOUIS... FARMINGTON 309 PM CST THU NOV 10 2011 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST FRIDAY. * TIMING...TEMPERATURES WILL FALL BELOW FREEZING AFTER MIDNIGHT TONIGHT THROUGH EARLY FRIDAY MORNING. * TEMPERATURES...LOW TEMPERATURES WILL BE BETWEEN 27 AND 32 DEGREES OVER MUCH OF THE AREA. * IMPACTS...WIDESPREAD FREEZING TEMPERATURES WILL LIKELY KILL ANY REMAINING TENDER VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ BRITT
2 follow-up statements
674 WWUS73 KLSX 110930 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 330 AM CST FRI NOV 11 2011 ILZ064-065-069-070-074-079-100>102-MOZ061>065-072>075-084-085-099- 111400- /O.CON.KLSX.FZ.W.0007.000000T0000Z-111111T1400Z/ BOND IL-FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL- MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER... EDWARDSVILLE...BELLEVILLE...ST CHARLES...UNION...ST LOUIS... FARMINGTON 330 AM CST FRI NOV 11 2011 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CST THIS MORNING... * TIMING...BELOW FREEZING TEMPERATURES WILL CONTINUE THROUGH EARLY THIS MORNING. * TEMPERATURES...LOW TEMPERATURES WILL BE IN THE 20S...RISING ABOVE FREEZING AT MOST LOCATIONS AROUND 8 AM. * IMPACTS...WIDESPREAD FREEZING TEMPERATURES WILL LIKELY KILL ANY REMAINING TENDER VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ TES
636 WWUS73 KLSX 111349 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 749 AM CST FRI NOV 11 2011 ILZ064-065-069-070-074-079-100>102-MOZ061>065-072>075-084-085-099- 111500- /O.EXP.KLSX.FZ.W.0007.000000T0000Z-111111T1400Z/ BOND IL-FAYETTE IL-CLINTON IL-MARION IL-WASHINGTON IL-RANDOLPH IL- MADISON IL-ST. CLAIR IL-MONROE IL-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...VANDALIA...SALEM...CHESTER... EDWARDSVILLE...BELLEVILLE...ST CHARLES...UNION...ST LOUIS... FARMINGTON 749 AM CST FRI NOV 11 2011 ...FREEZE WARNING WILL EXPIRE AT 8 AM CST THIS MORNING... MORNING TEMPERATURES HAVE RISEN TO NEAR OR ABOVE FREEZING AND WILL CONTINUE TO RISE. $$ BYRD
Nearby
Freeze Warnings in Missouri, 2011Freeze Warnings in Illinois, 2011Every freeze warning in 2011
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.