Alert archive / Iowa / Winter Weather Advisories in 2012
Winter Weather Advisory 4, NWS Des Moines, IA
NWS Des Moines, IA issued this winter weather advisory at Feb 3, 2012, 3:36 PM CST for 11 counties in Iowa. It took effect at Feb 4, 2012, 12:00 AM CST. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Feb 3, 2012, 3:36 PM CST (21:36 UTC)
- In effect from
- Feb 4, 2012, 12:00 AM CST
- Expired
- Feb 4, 2012, 10:52 PM CST
- In force
- 23 hr
- Issued by
- NWS Des Moines, IA
Counties Clarke County, IA, Decatur County, IA, Jasper County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Poweshiek County, IA, Ringgold County, IA, Taylor County, IA, Warren County, IA
The radar
The Des Moines radar (KDMX), 59 km from the middle of the area, began a volume at 21:38 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
Omaha, NE (KOAX), launched 12:00Z, 9.6 hours before the alert went out and 246 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
- 2157 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this winter weather advisory went out at Feb 3, 12:00 PM CST, 3 hours 36 minutes earlier.
Area forecast discussion, Feb 3, 12:00 PM CST, 3 hours 36 minutes before
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</html>Hazardous weather outlook, Feb 3, 3:36 PM CST, 0 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 336 PM CST FRI FEB 3 2012 IAZ044>049-057>061-070>074-081>084-092>094-042145- CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-AUDUBON-GUTHRIE-DALLAS- POLK-JASPER-CASS-ADAIR-MADISON-WARREN-MARION-ADAMS-UNION-CLARKE- LUCAS-TAYLOR-RINGGOLD-DECATUR- 336 PM CST FRI FEB 3 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT MODERATE TO LOCALLY HEAVY SNOW..BEGINNING LATE TONIGHT INTO THE EARLY MORNING HOURS SATURDAY WILL AFFECT THE AREA. WINTER STORM WARNINGS OR WINTER WEATHER ADVISORIES ARE IN EFFECT FOR THE AREA. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY MODERATE TO LOCALLY HEAVY SNOW WILL CONTINUE THROUGH SATURDAY NIGHT. IN ADDITION...GUSTY NORTHEAST WINDS WILL LEAD TO LOCAL VISIBILITY RESTRICTIONS WITH BLOWING AND DRIFTING OF SNOW. A WINTER STORM WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. HOWEVER...SNOWFALL REPORTS ARE ENCOURAGED AND MUCH APPRECIATED. IAZ062-075-085-086-095>097-042145- POWESHIEK-MAHASKA-MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS- 336 PM CST FRI FEB 3 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A RAIN AND SNOW MIX IS FORECAST THROUGHOUT THE DAY SATURDAY. LIGHT SNOW ACCUMULATIONS ARE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. IAZ004>007-015>017-023>028-033>039-050-042145- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-TAMA- 336 PM CST FRI FEB 3 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A BAND OF LIGHT TO LOCALLY MODERATE SNOW IS POSSIBLE ALONG AND SOUTH OF 20 THROUGHOUT THE DAY SATURDAY. GUSTY NORTHEAST WINDS WILL CAUSE BLOWING AND DRIFTING SNOW IN OPEN AREAS...WITH VISIBILITY RESTRICTIONS AT TIMES ON SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THOUGH REPORTS OF SNOWFALL ARE WELCOME.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 3, 3:36 PM CST | Winter Storm Warning | DMX | Adair, Adams, Audubon, Boone, Carroll, Cass and 8 more | 31 hr |
Nearby
Winter Weather Advisories in Iowa, 2012Every winter weather 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.