Alert archive / North Dakota / Extreme Cold Warnings in 2012

Extreme Cold Warning 3, NWS Grand Forks, ND

February 10, 201212 counties in North Dakota; 11 counties in Minnesota

NWS Grand Forks, ND issued this extreme cold warning at Feb 10, 2012, 2:45 AM CST for 12 counties in North Dakota; 11 counties in Minnesota. It took effect at Feb 10, 2012, 3:00 AM CST. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 10, 2012, 2:45 AM CST (08:45 UTC)
In effect from
Feb 10, 2012, 3:00 AM CST
Expired
Feb 10, 2012, 10:00 AM CST
In force
7 hr
Issued by
NWS Grand Forks, ND
All 23 counties

Beltrami County, MN, Clearwater County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Benson County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 62 km from the middle of the area, began a volume at 08:43 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

International Fa, MN (KINL), launched 00:00Z, 8.8 hours before the alert went out and 288 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, International Fa, MN at 00:00Z on 2012-02-10Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 00:00Z on 2012-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 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
1124 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

906 
WWUS73 KFGF 100845
NPWFGF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND FORKS ND
245 AM CST FRI FEB 10 2012

...EXTREMELY COLD WIND CHILLS THIS MORNING...

.VERY COLD AIR WILL CONTINUE TO MOVE DOWN INTO THE REGION FROM
CANADA THIS MORNING...WITH WIDESPREAD TEMPERATURES WELL BELOW
ZERO ALONG AND NORTH OF HIGHWAY 200. NORTH WINDS WILL CONTINUE TO
BLOW AT 10 TO 20 MPH THROUGH THE MORNING HOURS...WHICH WILL BRING
WIND CHILL VALUES DOWN INTO THE 30 TO 40 BELOW ZERO RANGE.
TEMPERATURES AND WIND CHILLS WILL RECOVER SOMEWHAT THIS
AFTERNOON...BUT READINGS LATE TONIGHT COULD AGAIN APPROACH
HAZARDOUS LEVELS.

MNZ001-002-004>009-013>017-022-023-NDZ006>008-014>016-024-026>030-
054-101600-
/O.NEW.KFGF.EC.W.0003.120210T0900Z-120210T1600Z/
WEST POLK-NORMAN-KITTSON-ROSEAU-LAKE OF THE WOODS-WEST MARSHALL-
EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE-EAST POLK-
NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN-SOUTH CLEARWATER-TOWNER-
CAVALIER-PEMBINA-BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-
GRAND FORKS-GRIGGS-STEELE-TRAILL-WESTERN WALSH-
INCLUDING THE CITIES OF...CROOKSTON...EAST GRAND FORKS...
HALSTAD...HALLOCK...ROSEAU...BAUDETTE...WARREN...NEWFOLDEN...
RED LAKE...THIEF RIVER FALLS...RED LAKE FALLS...FOSSTON...
BAGLEY...BEMIDJI...MAHNOMEN...LAKE ITASCA...CANDO...LANGDON...
CAVALIER...MADDOCK...LEEDS...DEVILS LAKE...GRAFTON...
NEW ROCKFORD...LAKOTA...GRAND FORKS...COOPERSTOWN...FINLEY...
MAYVILLE...ADAMS
245 AM CST FRI FEB 10 2012

...EXTREME COLD WARNING IN EFFECT UNTIL 10 AM CST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED AN EXTREME
COLD WARNING...WHICH IS IN EFFECT UNTIL 10 AM CST THIS MORNING. 

* WIND CHILL READINGS WILL CONTINUE TO DROP INTO THE 30 TO 40
  BELOW ZERO RANGE THROUGH THE EARLY MORNING HOURS BEFORE
  RECOVERING DURING THE LATE MORNING AND AFTERNOON.

* EARLY MORNING TEMPERATURES WILL DROP DOWN INTO THE 10 TO 15
  BELOW ZERO RANGE.  

* NORTH WINDS AT 10 TO 20 MPH WILL BRING WIND CHILLS OF 30 TO 40
  BELOW ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN EXTREME COLD WARNING MEANS THAT DANGEROUSLY LOW TEMPERATURES
ARE EXPECTED FOR A PROLONGED PERIOD OF TIME. FROSTBITE AND
HYPOTHERMIA ARE LIKELY IF EXPOSED TO THESE TEMPERATURES...SO MAKE
SURE A HAT...FACEMASK...AND HEAVY GLOVES OR MITTENS ARE
AVAILABLE.

&&

$$

JR
1 follow-up statement
263 
WWUS73 KFGF 101603
NPWFGF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND FORKS ND
1003 AM CST FRI FEB 10 2012

...EXTREME COLD WARNING HAS EXPIRED...

MNZ001-002-004>009-013>017-022-023-NDZ006>008-014>016-024-026>030-
054-101715-
/O.EXP.KFGF.EC.W.0003.000000T0000Z-120210T1600Z/
WEST POLK-NORMAN-KITTSON-ROSEAU-LAKE OF THE WOODS-WEST MARSHALL-
EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE-EAST POLK-
NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN-SOUTH CLEARWATER-TOWNER-
CAVALIER-PEMBINA-BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-
GRAND FORKS-GRIGGS-STEELE-TRAILL-WESTERN WALSH-
INCLUDING THE CITIES OF...CROOKSTON...EAST GRAND FORKS...
HALSTAD...HALLOCK...ROSEAU...BAUDETTE...WARREN...NEWFOLDEN...
RED LAKE...THIEF RIVER FALLS...RED LAKE FALLS...FOSSTON...
BAGLEY...BEMIDJI...MAHNOMEN...LAKE ITASCA...CANDO...LANGDON...
CAVALIER...MADDOCK...LEEDS...DEVILS LAKE...GRAFTON...
NEW ROCKFORD...LAKOTA...GRAND FORKS...COOPERSTOWN...FINLEY...
MAYVILLE...ADAMS
1003 AM CST FRI FEB 10 2012

...EXTREME COLD WARNING HAS EXPIRED...

TEMPERATURES AND WIND CHILL READINGS WILL REMAIN QUITE COLD YET
THIS MORNING...SO DRESS APPROPRIATELY IF GOING OUTDOORS.

$$

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 10, 2:45 PM CSTExtreme Cold WarningFGFBenson, Cass, Cavalier, Eddy, Grand Forks, Griggs and 8 more19 hr

Nearby

Extreme Cold Warnings in North Dakota, 2012Extreme Cold Warnings in Minnesota, 2012Every extreme cold warning 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.