Alert archive / Minnesota / Winter Storm Watches in 2008

Winter Storm Watch 4, NWS Grand Forks, ND

April 9, 200812 counties in Minnesota; 4 counties in North Dakota

NWS Grand Forks, ND issued this winter storm watch at Apr 9, 2008, 3:27 PM CDT for 12 counties in Minnesota; 4 counties in North Dakota. It took effect at Apr 10, 2008, 7:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 9, 2008, 3:27 PM CDT (20:27 UTC)
In effect from: Apr 10, 2008, 7:00 PM CDT
Expired: Apr 10, 2008, 2:30 PM CDT
In force
Issued by: NWS Grand Forks, ND

Counties Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Hubbard County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Polk County, MN, Wadena County, MN, Wilkin County, MN, Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 114 km from the middle of the area, began a volume at 20:26 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, 8.5 hours before the alert went out and 300 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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: -38 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 Apr 9, 10:41 AM CDT, 4 hours 46 minutes earlier.

Area forecast discussion, Apr 9, 10:41 AM CDT, 4 hours 46 minutes before

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Hazardous weather outlook, Apr 9, 7:00 AM CDT, 8 hours 27 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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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
Apr 9, 10:44 AM CDT	River Flood Watch	FGF	Clay	4 days
Apr 9, 10:44 AM CDT	River Flood Watch	FGF	Clay	5 days
Apr 9, 10:44 AM CDT	River Flood Watch	FGF	Clay	6 days

Nearby

Winter Storm Watches in Minnesota, 2008 Winter Storm Watches in North Dakota, 2008 Every winter storm watch in 2008

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.