Alert archive / Missouri / Freeze Warnings in 2011
Freeze Warning 3, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Apr 4, 2011, 3:58 PM CDT for 18 counties in Missouri. It took effect at Apr 5, 2011, 3:00 AM CDT. It was in force for 5 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
- Apr 4, 2011, 3:58 PM CDT (20:58 UTC)
- In effect from
- Apr 5, 2011, 3:00 AM CDT
- Expired
- Apr 5, 2011, 8:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
Counties Boone County, MO, Callaway County, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 67 km from the middle of the area, began a volume at 21:00 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, 9.0 hours before the alert went out and 273 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
- 724 m above ground
- 0-6 km bulk shear
- 96 kt
- 0-1 km storm-relative helicity
- -156 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
064 WWUS73 KLSX 042058 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 358 PM CDT MON APR 4 2011 MOZ041-047>052-059-060-062-065-072>075-084-085-099-051000- /O.NEW.KLSX.FZ.W.0003.110405T0800Z-110405T1300Z/ BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-FRANKLIN MO-JEFFERSON MO- CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO- IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...COLUMBIA...JEFFERSON CITY...UNION... FARMINGTON 358 PM CDT MON APR 4 2011 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM CDT TUESDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 8 AM CDT TUESDAY. * TIMING...TEMPERATURES WILL BEGIN TO DROP BELOW FREEZING IN PARTS OF THE WARNED AREA BY 3 AM AND BECOME WIDESPREAD JUST BEFORE SUNRISE. BY 8 AM...TEMPERATURES ARE EXPECTED TO HAVE RISEN ABOVE THE FREEZING MARK. * TEMPERATURES...MINIMUMS ARE FORECAST AROUND 30 DEGREES FOR MUCH OF THE WARNED AREA. * IMPACTS...THE AGRICULTURAL COMMUNITY INDICATES THAT DUE TO THE RECENT STRETCH OF WARM WEATHER...MANY PLANTS ARE VULNERABLE TO LOW TEMPERATURES IN THE MIDDLE AND UPPER 20S. 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. && $$ TES
2 follow-up statements
915 WWUS73 KLSX 050937 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 437 AM CDT TUE APR 5 2011 MOZ041-047>052-059-060-062-065-072>075-084-085-099-051300- /O.CON.KLSX.FZ.W.0003.000000T0000Z-110405T1300Z/ BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-FRANKLIN MO-JEFFERSON MO- CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO- IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...COLUMBIA...JEFFERSON CITY...UNION... FARMINGTON 437 AM CDT TUE APR 5 2011 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... A FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING. * TIMING...BELOW FREEZING TEMPERATURES WILL CONTINUE UNTIL ABOUT 8 AM. * TEMPERATURES...MINIMUMS OF ABOUT 29 TO 31 DEGREES ARE EXPECTED FOR MUCH OF THE WARNED AREA. * IMPACTS...THE AGRICULTURAL COMMUNITY INDICATES THAT DUE TO THE RECENT STRETCH OF WARM WEATHER...MANY PLANTS ARE VULNERABLE TO LOW TEMPERATURES IN THE MIDDLE AND UPPER 20S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ GKS
883 WWUS73 KLSX 051306 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 806 AM CDT TUE APR 5 2011 MOZ041-047>052-059-060-062-065-072>075-084-085-099-051415- /O.EXP.KLSX.FZ.W.0003.000000T0000Z-110405T1300Z/ BOONE MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-FRANKLIN MO-JEFFERSON MO- CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO- IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...COLUMBIA...JEFFERSON CITY...UNION... FARMINGTON 806 AM CDT TUE APR 5 2011 ...FREEZE WARNING HAS EXPIRED... THE FREEZE WARNING IS NO LONGER IN EFFECT. TEMPERATURES HAVE RISEN ABOVE FREEZING. $$ TES
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:34 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 40 min |
| Apr 3, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 30 min |
| Apr 3, 9:33 PM CDT | Severe Thunderstorm Warning | LSX | Lewis | 24 min |
| Apr 3, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Lewis, Marion, Monroe, Pike and 2 more | 46 min |
| Apr 3, 11:21 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 39 min |
| Apr 3, 11:54 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Cole, Montgomery, Osage | 35 min |
| Apr 4, 12:25 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Cole, Moniteau | 30 min |
| Apr 4, 3:28 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 32 min |
| Apr 4, 3:55 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis | 35 min |
Nearby
Freeze Warnings in Missouri, 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.