Alert archive / Iowa / Wind Chill Advisories in 2012
Wind Chill Advisory 2, NWS Des Moines, IA
NWS Des Moines, IA issued this wind chill advisory at Feb 10, 2012, 3:48 PM CST for 22 counties in Iowa. It took effect at Feb 11, 2012, 12:00 AM CST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Feb 10, 2012, 3:48 PM CST (21:48 UTC)
- In effect from
- Feb 11, 2012, 12:00 AM CST
- Expired
- Feb 11, 2012, 8:00 AM CST
- In force
- 8 hr
- Issued by
- NWS Des Moines, IA
All 22 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Humboldt County, IA, Kossuth County, IA, Madison County, IA, Palo Alto County, IA, Pocahontas County, IA, Ringgold County, IA, Sac County, IA, Taylor County, IA, Union County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 72 km from the middle of the area, began a volume at 21:52 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
Omaha, NE (KOAX), launched 12:00Z, 9.8 hours before the alert went out and 168 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
- 1529 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -91 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
310 WWUS43 KDMX 102148 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 348 PM CST FRI FEB 10 2012 ...BITTER COLD WIND CHILLS EXPECTED OVER PORTIONS OF WESTERN IOWA... .HIGH PRESSURE WILL BE SETTLING IN OVER WESTERN IOWA. THIS WILL ALLOW SOME VERY COLD AIR TO ENTER THE STATE. IN ADDITION...AN UPPER LEVEL SYSTEM OVER THE EASTERN PORTION OF IOWA IS PRODUCING A TIGHT PRESSURE GRADIENT OVER THE STATE WHICH IS PRODUCING A STRONG NORTHERLY WIND. IAZ004-005-015-023-024-033>035-044>047-057>059-070>072-081-082- 092-093-110600- /O.NEW.KDMX.WC.Y.0002.120211T0600Z-120211T1400Z/ EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER- CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR- MADISON-ADAMS-UNION-TAYLOR-RINGGOLD- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG... POCAHONTAS...HUMBOLDT...SAC CITY...ROCKWELL CITY...FORT DODGE... DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...WINTERSET... CORNING...CRESTON...BEDFORD...MOUNT AYR 348 PM CST FRI FEB 10 2012 ...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND CHILL ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CST SATURDAY. * SHORT TERM TRENDS...COLD TEMPERATURES ALREADY IN PLACE ARE EXPECTED TO SLIP FURTHER THIS EVENING. THE FAR NORTHWEST ALONG WITH SNOW COVERED AREAS OF WEST CENTRAL IOWA WILL SEE TEMPERATURES EVENTUALLY DIP TO ZERO OR BELOW. * WINDS...A NORTH TO NORTHWEST WIND AT 2O TO 30 MPH WILL BE COMMON THIS EVENING. THE WIND WILL DIMINISH SOME OVERNIGHT BUT SHOULD REMAIN IN THE 10 TO 20 MPH RANGE. * IMPACTS...WIND CHILL TEMPERATURES WILL SLIP TO NEAR ZERO THIS EVENING AND IS EXPECTED TO FALL TO BETWEEN -20 TO -25 AFTER MIDNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WIND WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. && $$ FAB
3 follow-up statements
274 WWUS43 KDMX 110350 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 950 PM CST FRI FEB 10 2012 ...BITTERLY COLD WIND CHILL READINGS THROUGH SATURDAY MORNING... .WITH AN ARCTIC HIGH PRESSURE LOCATED OVER THE DAKOTAS AND A LARGE AREA OF LOW PRESSURE CENTERED OVER THE GREAT LAKES REGION HAS PLACED IOWA WITHIN A TRANSITION ZONE...LEADING TO GUSTY NORTHWEST WINDS AND BITTERLY COLD WIND CHILL VALUES THROUGH SATURDAY MORNING. IAZ004-005-015-023-024-033>035-044>047-057>059-070>072-081-082- 092-093-111200- /O.CON.KDMX.WC.Y.0002.120211T0600Z-120211T1400Z/ EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER- CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR- MADISON-ADAMS-UNION-TAYLOR-RINGGOLD- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG... POCAHONTAS...HUMBOLDT...SAC CITY...ROCKWELL CITY...FORT DODGE... DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...WINTERSET... CORNING...CRESTON...BEDFORD...MOUNT AYR 950 PM CST FRI FEB 10 2012 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST SATURDAY... * SHORT TERM TRENDS...VERY COLD TEMPERATURES WILL CONTINUE TO FILTER INTO THE STATE AND OVERNIGHT LOW TEMPERATURES WILL DROP TO BELOW ZERO ACROSS WEST CENTRAL TO NORTHWEST IOWA...ESPECIALLY ACROSS SNOW COVERED AREAS. * WINDS...A BRISK NORTH WIND AT 10 TO 20 MPH WILL PERSIST THROUGH SATURDAY MORNING. * IMPACTS...WIND CHILL READINGS ARE LIKELY TO RANGE FROM 20 TO 25 DEGREES BELOW ZERO INTO THE EARLY MORNING HOURS SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WIND WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. && $$ PODRAZIK
010 WWUS43 KDMX 110930 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 330 AM CST SAT FEB 11 2012 ...BITTERLY COLD WIND CHILLS THIS MORNING... .AN ARCTIC HIGH PRESSURE AREA IS STRENGTHENING ALONG THE MISSOURI RIVER BASIN...PUSHING VERY COLD AIR INTO IOWA AND RESULTING IN GUSTY NORTHWEST WINDS AND BITTERLY COLD WIND CHILL READINGS. IAZ004-005-015-023-024-033>035-044>047-057>059-070>072-081-082- 092-093-111400- /O.CON.KDMX.WC.Y.0002.000000T0000Z-120211T1400Z/ EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER- CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR- MADISON-ADAMS-UNION-TAYLOR-RINGGOLD- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG... POCAHONTAS...HUMBOLDT...SAC CITY...ROCKWELL CITY...FORT DODGE... DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...WINTERSET... CORNING...CRESTON...BEDFORD...MOUNT AYR 330 AM CST SAT FEB 11 2012 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST THIS MORNING... * SHORT TERM TRENDS...VERY COLD AIR WILL CONTINUE TO FILTER INTO THE STATE AND MORNING LOW TEMPERATURES WILL BE BELOW ZERO ACROSS WEST CENTRAL TO NORTHWEST IOWA...ESPECIALLY OVER SNOW COVERED AREAS. * WINDS...A BRISK NORTHWEST WIND OF 10 TO 20 MPH WILL PERSIST THIS MORNING. * IMPACTS...WIND CHILL READINGS WILL RANGE FROM 20 TO 25 DEGREES BELOW ZERO AT TIMES EARLY THIS MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND WIND WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. && $$ LEE
011 WWUS43 KDMX 111408 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 808 AM CST SAT FEB 11 2012 IAZ004-005-015-023-024-033>035-044>047-057>059-070>072-081-082- 092-093-111515- /O.EXP.KDMX.WC.Y.0002.000000T0000Z-120211T1400Z/ EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER- CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR- MADISON-ADAMS-UNION-TAYLOR-RINGGOLD- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG... POCAHONTAS...HUMBOLDT...SAC CITY...ROCKWELL CITY...FORT DODGE... DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...WINTERSET... CORNING...CRESTON...BEDFORD...MOUNT AYR 808 AM CST SAT FEB 11 2012 ...WIND CHILL ADVISORY HAS EXPIRED... TEMPERATURES WERE JUST ABOVE AND BELOW ZERO OVER WESTERN IOWA THIS MORNING...BUT WINDS WERE GRADUALLY DIMINISHING AS PLAINS HIGH PRESSURE APPROACHED THE MISSOURI VALLEY. TEMPERATURES WILL BEGIN SLOWLY WARMING WITH WIND CHILLS NO LONGER AT OR BELOW ADVISORY CRITERIA. $$ SMALL
Nearby
Wind Chill Advisories in Iowa, 2012Every wind chill advisory 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.