Alert archive / Missouri / Freeze Warnings in 2012
Freeze Warning 5, NWS St. Louis, MO
NWS St. Louis, MO issued this freeze warning at Oct 26, 2012, 3:35 AM CDT for 10 counties in Illinois; 29 counties in Missouri. It took effect at Oct 27, 2012, 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
- Oct 26, 2012, 3:35 AM CDT (08:35 UTC)
- In effect from
- Oct 27, 2012, 3:00 AM CDT
- Expired
- Oct 27, 2012, 8:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
All 39 counties
Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Pike County, IL, Saint Clair County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Madison County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shelby County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 38 km from the middle of the area, began a volume at 08:38 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, 8.6 hours before the alert went out and 258 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
- 6 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 529 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 186 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
105 WWUS73 KLSX 260835 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 335 AM CDT FRI OCT 26 2012 ...A HARD FREEZE IS POSSIBLE LATE TONIGHT AND EARLY SATURDAY MORNING... .A CANADIAN HIGH PRESSURE SYSTEM WILL CONTINUE TO SLOWLY BUILD SOUTH AND EASTWARD INTO OUR AREA BEHIND A STRONG COLD FRONT. THIS WILL LEAD TO CLEAR SKIES...LIGHT WINDS...AND DEW POINTS IN THE MID 20S BY TONIGHT. THESE CONDITIONS WILL LIKELY SUPPORT SUBFREEZING CONDITIONS LATE TONIGHT AND EARLY SATURDAY MORNING. ILZ058-059-095>102-MOZ018-019-026-027-034>036-041-042-047>052- 059>065-072>075-084-085-099-262200- /O.UPG.KLSX.FZ.A.0002.121027T0800Z-121027T1300Z/ /O.NEW.KLSX.FZ.W.0005.121027T0800Z-121027T1300Z/ GREENE IL-MACOUPIN IL-ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL- JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-LEWIS MO- SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-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...QUINCY...EDWARDSVILLE...BELLEVILLE... HANNIBAL...BOWLING GREEN...COLUMBIA...MEXICO...JEFFERSON CITY... ST CHARLES...UNION...ST LOUIS...FARMINGTON 335 AM CDT FRI OCT 26 2012 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM CDT SATURDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 8 AM CDT SATURDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TIMING...SUBFREEZING TEMPERATURES ARE POSSIBLE LATE TONIGHT AND EARLY SATURDAY MORNING. * TEMPERATURES...LOWS IN THE UPPER 20S TO LOWER 30S. * IMPACTS...SUBFREEZING TEMPERATURES MAY CAUSE DAMAGE TO CROPS AND 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. && $$ BYRD
3 follow-up statements
527 WWUS73 KLSX 261954 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 254 PM CDT FRI OCT 26 2012 ...SUBFREEZING TEMPERATURES LIKELY LATE TONIGHT AND EARLY SATURDAY MORNING... .THE COLDEST AIR MASS SO FAR THIS SEASON WILL SETTLE INTO THE MIDWEST THIS WEEKEND. HIGH PRESSURE WILL MOVE TOWARD OUR AREA FROM THE GREAT PLAINS TONIGHT. THIS HIGH WILL BRING MAINLY CLEAR SKIES AND RELATIVELY LIGHT WINDS WHICH SHOULD ALLOW LOW TEMPERATURES TO FALL BELOW FREEZING OVER MUCH OF THE AREA LATE TONIGHT. ILZ058-059-095>102-MOZ018-019-026-027-034>036-041-042-047>052- 059>065-072>075-084-085-099-271000- /O.CON.KLSX.FZ.W.0005.121027T0800Z-121027T1300Z/ GREENE IL-MACOUPIN IL-ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL- JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-LEWIS MO- SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...QUINCY...EDWARDSVILLE...BELLEVILLE... HANNIBAL...BOWLING GREEN...COLUMBIA...MEXICO...JEFFERSON CITY... ST CHARLES...UNION...ST LOUIS...FARMINGTON 254 PM CDT FRI OCT 26 2012 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM CDT SATURDAY... * TIMING...SUBFREEZING TEMPERATURES ARE LIKELY LATE TONIGHT AND EARLY SATURDAY MORNING. * TEMPERATURES...LOWS WILL BE IN THE UPPER 20S AND LOWER 30S. * IMPACTS...SUBFREEZING TEMPERATURES MAY CAUSE DAMAGE TO CROPS AND TENDER VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IS ISSUED WHEN SUBFREEZING TEMPERATURES ARE FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT TENDER VEGETATION. ALSO...POTTED PLANTS NORMALLY LEFT OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE AWAY FROM THE COLD. && $$ BRITT
544 WWUS73 KLSX 270829 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 329 AM CDT SAT OCT 27 2012 .TEMPERATURES WILL CONTINUE TO DROP OVER CENTRAL AND EASTERN MISSOURI AND SOUTHWEST ILLINOIS EARLY THIS MORNING AS COLD CANADIAN AIR WORKS INTO THE REGION. BY DAYBREAK...TEMPERATURES ARE FORECAST TO BE AT OR BELOW 32 DEGREES ALONG...AND ESPECIALLY WEST OF...A LITCHFIELD...ST LOUIS...FREDERICKTOWN LINE. THE COLDEST TEMPERATURES WILL BE OVER NORTHEAST MISSOURI WHERE OVERNIGHT LOWS WILL BOTTOM OUT IN THE UPPER 20S. ILZ058-059-095>102-MOZ018-019-026-027-034>036-041-042-047>052- 059>065-072>075-084-085-099-271300- /O.CON.KLSX.FZ.W.0005.000000T0000Z-121027T1300Z/ GREENE IL-MACOUPIN IL-ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL- JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-LEWIS MO- SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-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...QUINCY...EDWARDSVILLE...BELLEVILLE... HANNIBAL...BOWLING GREEN...COLUMBIA...MEXICO...JEFFERSON CITY... ST CHARLES...UNION...ST LOUIS...FARMINGTON 329 AM CDT SAT OCT 27 2012 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * TIMING...SUBFREEZING TEMPERATURES ARE EXPECTED EARLY THIS MORNING. * TEMPERATURES...LOWS WILL BE IN THE UPPER 20S AND LOWER 30S. * IMPACTS...SUBFREEZING TEMPERATURES MAY CAUSE DAMAGE TO CROPS AND TENDER VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING IS ISSUED WHEN SUBFREEZING 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. && $$ TRUETT
250 WWUS73 KLSX 271301 NPWLSX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 801 AM CDT SAT OCT 27 2012 ILZ058-059-095>102-MOZ018-019-026-027-034>036-041-042-047>052- 059>065-072>075-084-085-099-271415- /O.EXP.KLSX.FZ.W.0005.000000T0000Z-121027T1300Z/ GREENE IL-MACOUPIN IL-ADAMS IL-BROWN IL-PIKE IL-CALHOUN IL- JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO-LEWIS MO- SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- INCLUDING THE CITIES OF...QUINCY...EDWARDSVILLE...BELLEVILLE... HANNIBAL...BOWLING GREEN...COLUMBIA...MEXICO...JEFFERSON CITY... ST CHARLES...UNION...ST LOUIS...FARMINGTON 801 AM CDT SAT OCT 27 2012 ...FREEZE WARNING HAS EXPIRED... EARLY MORNING SUNSHINE WILL BE WARMING TEMPERATURES ABOVE THE FREEZING MARK OVER THE NEXT HOUR. $$ TRUETT
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.