Alert archive / Minnesota / Winter Storm Watches in 2010

Winter Storm Watch 1, NWS Twin Cities, MN

January 5, 201014 counties in Minnesota

NWS Twin Cities, MN issued this winter storm watch at Jan 5, 2010, 3:54 PM CST for 14 counties in Minnesota. It took effect at Jan 6, 2010, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 5, 2010, 3:54 PM CST (21:54 UTC)
In effect from
Jan 6, 2010, 12:00 PM CST
Expired
Jan 6, 2010, 1:02 AM CST
In force
Issued by
NWS Twin Cities, MN

Counties Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Faribault County, MN, Freeborn County, MN, Lac qui Parle County, MN, Martin County, MN, Redwood County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Waseca County, MN, Watonwan County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 108 km from the middle of the area, began a volume at 21:51 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, 9.9 hours before the alert went out and 365 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2010-01-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2010-01-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Twin Cities, MN wrote its last area forecast discussion before this winter storm watch went out at Jan 5, 3:45 PM CST, 9 minutes earlier.

Area forecast discussion, Jan 5, 3:45 PM CST, 9 minutes before
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Hazardous weather outlook, Jan 5, 1:11 PM CST, 2 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
111 PM CST TUE JAN 5 2010

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
061045-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
111 PM CST TUE JAN 5 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ACCUMULATING SNOW IS POSSIBLE ALONG AND SOUTH OF INTERSTATE 94
WEDNESDAY AND WEDNESDAY NIGHT AS A LOW PRESSURE SYSTEM MOVES
SOUTHEAST ACROSS THE NORTHERN PLAINS. SNOW ACCUMULATIONS FROM 3
TO 5 INCHES WILL BE POSSIBLE FROM BENSON TO FARIBAULT ON
SOUTHWARD.

IN ADDITION...NORTHWEST WINDS WILL BE ON THE INCREASE WEDNESDAY
NIGHT WITH AREAS OF BLOWING AND DRIFTING SNOW DEVELOPING ACROSS
WEST CENTRAL THROUGH SOUTH CENTRAL MINNESOTA THROUGH THE DAY
THURSDAY. ANOTHER SURGE OF VERY COLD ARCTIC AIR WILL FOLLOW THIS
WEATHER SYSTEM FOR THURSDAY THROUGH SATURDAY...WITH DANGEROUSLY
COLD WIND CHILL VALUES OF 30 TO 40 BELOW ZERO POSSIBLE FRIDAY
MORNING FROM WEST INTO SOUTH CENTRAL MINNESOTA.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 5, 3:54 PM CSTWinter Weather AdvisoryMPXDouglas, Freeborn, Goodhue, Kandiyohi, Le Sueur, Nicollet and 7 more56 hr

Nearby

Winter Storm Watches in Minnesota, 2010Every winter storm watch in 2010

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.