Alert archive / Missouri / Wind Chill Advisories in 2011
Wind Chill Advisory 3, NWS St. Louis, MO
NWS St. Louis, MO issued this wind chill advisory at Feb 9, 2011, 3:55 PM CST for 12 counties in Missouri. It took effect at Feb 10, 2011, 4:00 AM CST. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Feb 9, 2011, 3:55 PM CST (21:55 UTC)
- In effect from
- Feb 10, 2011, 4:00 AM CST
- Expired
- Feb 10, 2011, 10:00 AM CST
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
Counties 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, Osage County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 131 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 288 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
- 1830 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
466 WWUS43 KLSX 092155 WSWLSX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 355 PM CST WED FEB 9 2011 MOZ018-019-026-027-034-035-041-042-047>050-101000- /O.NEW.KLSX.WC.Y.0003.110210T1000Z-110210T1600Z/ KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO- INCLUDING THE CITIES OF...HANNIBAL...COLUMBIA...MEXICO... JEFFERSON CITY 355 PM CST WED FEB 9 2011 ...WIND CHILL ADVISORY IN EFFECT FROM 4 AM TO 10 AM CST THURSDAY... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WIND CHILL ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 10 AM CST THURSDAY. * TIMING...WIND CHILL VALUES WILL FALL TO AROUND 15 DEGREES BELOW ZERO AFTER 400 AM THURSDAY. TEMPERATURES WILL RISE QUICKLY AFTER SUNRISE AND WIND CHILL VALUES SHOULD RISE ABOVE 15 DEGREES BELOW ZERO BY 1000 AM THURSDAY. * WIND CHILL VALUES...WIND CHILL VALUES OF BETWEEN 15 AND 20 DEGREES BELOW ZERO ARE LIKELY. * IMPACTS...FROSTBITE CAN DEVELOP ON EXPOSED SKIN IN AS LITTLE AS 30 MINUTES WHEN WIND CHILL VALUES ARE BETWEEN 15 DEGREES BELOW AND 24 DEGREES BELOW ZERO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY IS ISSUED WHEN A STRONG WIND COMBINES WITH VERY LOW TEMPERATURES TO CREATE DANGEROUS CONDITIONS FOR EXPOSED SKIN. THE COLD AIR AND WIND WILL MAKE IT FEEL LIKE IT IS BETWEEN 15 AND 24 DEGREES BELOW ZERO FOR SEVERAL HOURS. THOSE PLANNING TO VENTURE OUTDOORS SHOULD USE COMMON SENSE AND DRESS WARMLY... MAKING SURE THAT ALL EXPOSED SKIN IS COVERED. && $$ CARNEY
2 follow-up statements
145 WWUS43 KLSX 100936 WSWLSX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 336 AM CST THU FEB 10 2011 MOZ018-019-026-027-034-035-041-042-047>050-101600- /O.CON.KLSX.WC.Y.0003.110210T1000Z-110210T1600Z/ KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO- INCLUDING THE CITIES OF...HANNIBAL...COLUMBIA...MEXICO... JEFFERSON CITY 336 AM CST THU FEB 10 2011 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING... A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING. * TIMING...THE COMBINATION OF VERY COLD AIR AND SOUTHWEST WINDS AROUND 5 MPH WILL RESULT IN BITTERLY COLD WIND CHILLS. TEMPERATURES WILL RISE QUICKLY AFTER SUNRISE AND WIND CHILL VALUES SHOULD RISE ABOVE 15 DEGREES BELOW ZERO BY 10 AM. * WIND CHILL VALUES...WIND CHILL VALUES OF BETWEEN 15 AND 24 DEGREES BELOW ZERO ARE LIKELY. * IMPACTS...FROSTBITE CAN DEVELOP ON EXPOSED SKIN IN AS LITTLE AS 30 MINUTES WHEN WIND CHILL VALUES ARE BETWEEN 15 DEGREES BELOW AND 24 DEGREES BELOW ZERO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY IS ISSUED WHEN A STRONG WIND COMBINES WITH VERY LOW TEMPERATURES TO CREATE DANGEROUS CONDITIONS FOR EXPOSED SKIN. THE COLD AIR AND WIND WILL MAKE IT FEEL LIKE IT IS BETWEEN 15 AND 24 DEGREES BELOW ZERO FOR SEVERAL HOURS. THOSE PLANNING TO VENTURE OUTDOORS SHOULD USE COMMON SENSE AND DRESS WARMLY... MAKING SURE THAT ALL EXPOSED SKIN IS COVERED. && $$ BYRD
034 WWUS43 KLSX 101608 WSWLSX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE ST LOUIS MO 1008 AM CST THU FEB 10 2011 MOZ018-019-026-027-034-035-041-042-047>050-101715- /O.EXP.KLSX.WC.Y.0003.000000T0000Z-110210T1600Z/ KNOX MO-LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO- INCLUDING THE CITIES OF...HANNIBAL...COLUMBIA...MEXICO... JEFFERSON CITY 1008 AM CST THU FEB 10 2011 ...WIND CHILL ADVISORY HAS EXPIRED... THE WIND CHILL ADVISORY IS NO LONGER IN EFFECT. TEMPERATURES HAVE WARMED INTO THE SINGLE DIGITS ABOVE ZERO...ENDING THE BITTERY COLD WIND CHILLS THAT OCCURRED EARLIER THIS MORNING. $$ TRUETT
Nearby
Wind Chill Advisories in Missouri, 2011Every wind chill advisory 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.