Alert archive / Minnesota / Winter Storm Watches in 2007

Winter Storm Watch 5, NWS Grand Forks, ND

November 29, 20076 counties in Minnesota; Richland County, North Dakota

NWS Grand Forks, ND issued this winter storm watch at Nov 29, 2007, 3:25 PM CST for 6 counties in Minnesota; Richland County, North Dakota. It took effect at Dec 1, 2007, 6:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Nov 29, 2007, 3:25 PM CST (21:25 UTC)
In effect from: Dec 1, 2007, 6:00 AM CST
Expired: Nov 30, 2007, 9:18 PM CST
In force
Issued by: NWS Grand Forks, ND

Counties Becker County, MN, Grant County, MN, Hubbard County, MN, Otter Tail County, MN, Wadena County, MN, Wilkin County, MN, Richland County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 161 km from the middle of the area, began a volume at 21:25 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

Minneapolis, MN (KMPX), launched 12:00Z, 9.4 hours before the alert went out and 253 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: 1109 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 170 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 Grand Forks, ND wrote its last area forecast discussion before this winter storm watch went out at Nov 29, 3:17 PM CST, 8 minutes earlier.

Area forecast discussion, Nov 29, 3:17 PM CST, 8 minutes before

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Hazardous weather outlook, Nov 29, 2:59 PM CST, 26 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
Nov 29, 4:14 AM CST	Wind Chill Advisory	FGF	Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 4 more	29 hr

Nearby

Winter Storm Watches in Minnesota, 2007 Winter Storm Watches in North Dakota, 2007 Every 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.