Alert archive / Missouri / Freeze Warnings in 2012
Freeze Warning 4, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Oct 6, 2012, 3:31 PM CDT for 11 counties in Missouri; Adams County, Illinois. It took effect at Oct 7, 2012, 4:00 AM CDT. It was in force for 4 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 6, 2012, 3:31 PM CDT (20:31 UTC)
- In effect from
- Oct 7, 2012, 4:00 AM CDT
- Expired
- Oct 7, 2012, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
Counties Adams County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 20:33 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
Davenport, (KDVN), launched 12:00Z, 8.5 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
- 1000 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- -88 m²/s²
- 0-3 km storm-relative helicity
- -20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
546 WWUS73 KLSX 062031 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 331 PM CDT SAT OCT 6 2012 ...FREEZING TEMPERATURES FORECAST LATE TONIGHT... .AN UNSEASONABLY COLD AIR MASS OVER OUR REGION WILL LEAD TO LOW TEMPERATURES OF 32 DEGREES OR LESS ALONG WITH AREAS OF FROST LATE TONIGHT AND EARLY SUNDAY MORNING AS THE CLOUDS CLEAR OUT AND THE WINDS WEAKEN. ILZ095-MOZ018-019-026-027-034-035-041-042-047-048-050-071000- /O.NEW.KLSX.FZ.W.0004.121007T0900Z-121007T1300Z/ ADAMS IL-KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO- BOONE MO-AUDRAIN MO-MONITEAU MO-COLE MO-CALLAWAY MO- INCLUDING THE CITIES OF...QUINCY...HANNIBAL...COLUMBIA...MEXICO... JEFFERSON CITY 331 PM CDT SAT OCT 6 2012 ...FREEZE WARNING IN EFFECT FROM 4 AM TO 8 AM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 4 AM TO 8 AM CDT SUNDAY. * TIMING...LATE TONIGHT AND EARLY SUNDAY MORNING. * TEMPERATURES...UPPER 20S TO AROUND 30 DEGREES NEAR SUNRISE. * IMPACTS...SEVERAL HOURS BELOW FREEZING CAN DAMAGE OR KILL 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. && $$ GKS
2 follow-up statements
001 WWUS73 KLSX 070813 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 313 AM CDT SUN OCT 7 2012 ILZ095-MOZ019-027-034-035-041-042-047-048-050-070915- /O.CAN.KLSX.FZ.W.0004.121007T0900Z-121007T1300Z/ ADAMS IL-LEWIS MO-MARION MO-MONROE MO-RALLS MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-CALLAWAY MO- INCLUDING THE CITIES OF...QUINCY...HANNIBAL...COLUMBIA...MEXICO... JEFFERSON CITY 313 AM CDT SUN OCT 7 2012 ...FREEZE WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED THE FREEZE WARNING. EXTENSIVE CLOUD COVER OVER THE AREA WILL KEEP TEMPERATURES ABOVE FREEZING THIS MORNING. THEREFORE THE FREEZE WARNING IS CANCELLED. $$ MOZ018-026-071300- /O.CON.KLSX.FZ.W.0004.121007T0900Z-121007T1300Z/ KNOX MO-SHELBY MO- 313 AM CDT SUN OCT 7 2012 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * TIMING...FREEZING TEMPERATURES ARE LIKELY THROUGH SUNRISE THIS MORNING. * TEMPERATURES...TEMPERATURES AROUND 30 DEGREES ARE LIKELY. * IMPACTS...SEVERAL HOURS BELOW FREEZING CAN DAMAGE OR KILL 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. && $$ ILZ079-MOZ072>075-084-085-099-072130- /O.NEW.KLSX.FR.Y.0004.121008T0800Z-121008T1400Z/ RANDOLPH IL-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...FARMINGTON 313 AM CDT SUN OCT 7 2012 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM CDT MONDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 9 AM CDT MONDAY. * TIMING...FROST IS LIKELY LATE TONIGHT THROUGH THE EARLY MORNING ON MONDAY. * TEMPERATURES...TEMPERATURES IN THE LOW TO MID 30S COMBINED WITH LIGHT WIND AND A CLEAR SKY WILL PRODUCE EXCELLENT CONDITIONS FOR FROST. * IMPACTS...DAMAGE TO TENDER VEGETATION IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY IS ISSUED WHEN FROST IS EXPECTED TO DEVELOP DURING THE GROWING SEASON. THOSE WITH AGRICULTURAL INTERESTS IN THE ADVISORY AREA SHOULD PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ CARNEY
456 WWUS73 KLSX 071307 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 807 AM CDT SUN OCT 7 2012 MOZ018-026-071415- /O.EXP.KLSX.FZ.W.0004.000000T0000Z-121007T1300Z/ KNOX MO-SHELBY MO- 807 AM CDT SUN OCT 7 2012 ...FREEZE WARNING HAS EXPIRED... TEMPERATURES HAVE REACHED MINIMUM THIS MORNING AND HAVE BEGUN TO RISE. THEREFORE THE FREEZE WARNING HAS BEEN ALLOWED TO EXPIRE. $$ ILZ079-MOZ072>075-084-085-099-080115- /O.CON.KLSX.FR.Y.0004.121008T0800Z-121008T1400Z/ RANDOLPH IL-CRAWFORD MO-WASHINGTON MO-ST. FRANCOIS MO- STE. GENEVIEVE MO-IRON MO-MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...CHESTER...FARMINGTON 807 AM CDT SUN OCT 7 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM CDT MONDAY... * TIMING...FROST IS LIKELY LATE TONIGHT THROUGH THE EARLY MORNING ON MONDAY. * TEMPERATURES...TEMPERATURES IN THE LOW TO MID 30S COMBINED WITH LIGHT WIND AND A CLEAR SKY WILL PRODUCE EXCELLENT CONDITIONS FOR FROST. * IMPACTS...DAMAGE TO TENDER VEGETATION IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY IS ISSUED WHEN FROST IS EXPECTED TO DEVELOP DURING THE GROWING SEASON. THOSE WITH AGRICULTURAL INTERESTS IN THE ADVISORY AREA SHOULD PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ CARNEY
Nearby
Freeze Warnings in Missouri, 2012Freeze Warnings in Illinois, 2012Every freeze warning in 2012
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.