Alert archive / Iowa / Winter Storm Watches in 2011

Winter Storm Watch 3, NWS Des Moines, IA

January 30, 201134 counties in Iowa

NWS Des Moines, IA issued this winter storm watch at Jan 30, 2011, 4:01 AM CST for 34 counties in Iowa. It took effect at Feb 1, 2011, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 30, 2011, 4:01 AM CST (10:01 UTC)
In effect from
Feb 1, 2011, 12:00 PM CST
Expired
Jan 31, 2011, 4:20 PM CST
In force
Issued by
NWS Des Moines, IA
All 34 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hardin County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 30 km from the middle of the area, began a volume at 09:59 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.

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 Jan 30, 3:48 AM CST, 13 minutes earlier.

Area forecast discussion, Jan 30, 3:48 AM CST, 13 minutes before
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Hazardous weather outlook, Jan 29, 3:54 PM CST, 12 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
354 PM CST SAT JAN 29 2011

IAZ004>007-015>017-023>025-302200-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-
354 PM CST SAT JAN 29 2011

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...SUNDAY THROUGH FRIDAY

A PROLONGED INTERMITTENT SNOW EVENT WILL BEGIN SUNDAY NIGHT ACROSS
NORTHERN IOWA AND SPREAD GRADUALLY SOUTH THROUGH MUCH OF CENTRAL
IOWA ON MONDAY. VARIED INTENSITIES OF SNOWFALL ARE EXPECTED DURING
THIS TIME ENDING BY WEDNESDAY MORNING.

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 WILL NOT BE NEEDED BUT SNOWFALL AMOUNTS LATE
SUNDAY NIGHT AND MONDAY WOULD BE APPRECIATED.

IAZ026>028-033>039-044>050-057>062-070>075-081>086-092>097-302200-
FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-
BLACK HAWK-CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-
GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-
MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-
RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
354 PM CST SAT JAN 29 2011

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...SUNDAY THROUGH FRIDAY

A PROLONGED INTERMITTENT SNOW EVENT WILL BEGIN SUNDAY NIGHT ACROSS
NORTHERN IOWA AND SPREAD GRADUALLY SOUTH THROUGH MUCH OF CENTRAL
IOWA ON MONDAY. VARIED INTENSITIES OF SNOWFALL ARE EXPECTED DURING
THIS TIME ENDING BY WEDNESDAY MORNING. AT LEAST MODERATE ACCUMULATIONS
WILL OCCUR IN MANY AREAS WITH THE MOST SNOW TOWARD THE IOWA MISSOURI
BORDER.

UNCERTAINTIES WITH THIS STORM TRACK STILL EXIST HOWEVER. ONE OF
THE LESS LIKELY SCENARIOS RESULTS IN HEAVY SNOW NEARLY REGION WIDE
WITH SIGNIFICANT BLOWING AND DRIFTING...ESPECIALLY TUESDAY AFTERNOON
INTO WEDNESDAY MORNING. PEOPLE WITH TRAVEL PLANS EARLY NEXT WEEK
SHOULD CONTINUE TO MONITOR THE LATEST FORECASTS AS CONFIDENCE IN
THE STORM TRACK AND EVENT DETAILS INCREASE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

REV

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 30, 4:01 AM CSTWinter Weather AdvisoryDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more68 hr

Nearby

Winter Storm Watches in Iowa, 2011Every winter storm watch 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; radar from the NEXRAD Level II archive.