Alert archive / Iowa / Winter Storm Watches in 2007
Winter Storm Watch 6, NWS Des Moines, IA
NWS Des Moines, IA issued this winter storm watch at Feb 27, 2007, 3:29 PM CST for 39 counties in Iowa. It took effect at Feb 28, 2007, 6:00 AM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 27, 2007, 3:29 PM CST (21:29 UTC)
- In effect from
- Feb 28, 2007, 6:00 AM CST
- Expired
- Feb 28, 2007, 4:14 AM CST
- In force
- Issued by
- NWS Des Moines, IA
All 39 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Madison County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Ringgold County, IA, Sac County, IA, Story County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 51 km from the middle of the area, began a volume at 21:30 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, 9.5 hours before the alert went out and 295 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
- 635 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 43 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 storm watch 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 storm watch went out at Feb 27, 3:20 PM CST, 9 minutes earlier.
Area forecast discussion, Feb 27, 3:20 PM CST, 9 minutes before
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</html>Hazardous weather outlook, Feb 27, 3:29 PM CST, 0 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DES MOINES IA 329 PM CST TUE FEB 27 2007 IAZ004>007-015>017-023>028-033>039-044>048-057>059-282130- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-AUDUBON-GUTHRIE-DALLAS- 329 PM CST TUE FEB 27 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A WINTER STORM WATCH IS IN EFFECT WEDNESDAY THROUGH FRIDAY FOR THE COMBINED HAZARDS OF HEAVY ICE ACCUMULATION...HEAVY SNOW AND STRONG WINDS. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. HOWEVER REPORTS OF SNOW AND ICE AMOUNTS AS WELL AS WIND SPEEDS ARE GREATLY APPRECIATED. IAZ060-070>073-081>083-092>094-282130- POLK-CASS-ADAIR-MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD- DECATUR- 329 PM CST TUE FEB 27 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A WINTER STORM WATCH IS IN EFFECT THURSDAY THROUGH FRIDAY FOR THE COMBINED HAZARDS OF HEAVY SNOW AND STRONG WINDS. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. THERE IS ALSO A CHANCE OF NON-SEVERE THUNDERSTORMS WEDNESDAY AFTERNOON THROUGH WEDNESDAY NIGHT. THESE THUNDERSTORMS COULD PRODUCE SMALL HAIL...GUSTY WINDS AND DANGEROUS LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. HOWEVER REPORTS OF SNOW AND ICE AMOUNTS AS WELL AS WIND SPEEDS ARE GREATLY APPRECIATED. IAZ049-050-061-062-074-075-084>086-095>097-282130- MARSHALL-TAMA-JASPER-POWESHIEK-MARION-MAHASKA-LUCAS-MONROE- WAPELLO-WAYNE-APPANOOSE-DAVIS- 329 PM CST TUE FEB 27 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS CHANCE OF THUNDERSTORMS WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING. ISOLATED SEVERE THUNDERSTORMS PRODUCING HAIL UP TO ONE INCH IN DIAMETER ARE POSSIBLE LATE WEDNESDAY NIGHT AND EARLY THURSDAY MORNING. ANY THUNDERSTORMS WILL BE CAPABLE OF PRODUCING GUSTY WIND AND DANGEROUS LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE WEDNESDAY NIGHT AND THURSDAY MORNING IF SEVERE THUNDERSTORMS DEVELOP. MOYER
Nearby
Winter Storm Watches in Iowa, 2007Every winter storm watch in 2007
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.