Alert archive / North Dakota / Wind Chill Advisories in 2009

Wind Chill Advisory 15, NWS Grand Forks, ND

December 13, 200915 counties in North Dakota; 12 counties in Minnesota

NWS Grand Forks, ND issued this wind chill advisory at Dec 13, 2009, 11:14 AM CST for 15 counties in North Dakota; 12 counties in Minnesota. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: Dec 13, 2009, 11:14 AM CST (17:14 UTC)
Expired: Dec 14, 2009, 11:04 AM CST
In force: 24 hr
Issued by: NWS Grand Forks, ND

All 27 counties

Beltrami County, MN, Clay 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, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 41 km from the middle of the area, began a volume at 17:19 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

Aberdeen, SD (KABR), launched 12:00Z, 5.2 hours before the alert went out and 344 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 879 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 345 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Forks, ND wrote its last area forecast discussion before this wind chill advisory went out at Dec 13, 11:05 AM CST, 9 minutes earlier.

Area forecast discussion, Dec 13, 11:05 AM CST, 9 minutes before

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Hazardous weather outlook, Dec 13, 4:53 AM CST, 6 hours 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 12, 8:42 PM CST	Wind Chill Warning	FGF	Benson, Cavalier, Pembina, Ramsey, Towner, Walsh	15 hr

Nearby

Wind Chill Advisories in North Dakota, 2009 Wind Chill Advisories in Minnesota, 2009 Every wind chill advisory in 2009

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.