Alert archive / North Dakota / Winter Storm Watches in 2011

Winter Storm Watch 7, NWS Bismarck, ND

April 28, 201112 counties in North Dakota

NWS Bismarck, ND issued this winter storm watch at Apr 28, 2011, 9:45 PM CDT for 12 counties in North Dakota. It took effect at Apr 29, 2011, 7:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Apr 28, 2011, 9:45 PM CDT (02:45 UTC)
In effect from: Apr 29, 2011, 7:00 PM CDT
Expired: Apr 29, 2011, 4:23 AM CDT
In force
Issued by: NWS Bismarck, ND

Counties Bottineau County, ND, Burke County, ND, Divide County, ND, Foster County, ND, McHenry County, ND, Mountrail County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Wells County, ND, Williams County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 2.8 hours before the alert went out and 173 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: 3300 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 99 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 Bismarck, ND wrote its last area forecast discussion before this winter storm watch went out at Apr 28, 9:15 PM CDT, 30 minutes earlier.

Area forecast discussion, Apr 28, 9:15 PM CDT, 30 minutes before

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Hazardous weather outlook, Apr 28, 9:27 PM CDT, 18 minutes before

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In the hours before

Special weather statement, Apr 28, 4:44 PM CDT, 5 hours 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 4:23 AM CDT	Winter Storm Warning	BIS	Bottineau, McHenry, Pierce, Renville, Rolette	12 hr
Apr 29, 4:23 AM CDT	Winter Weather Advisory	BIS	Burke, Foster, Mountrail, Sheridan, Wells	12 hr
Apr 29, 4:32 AM CDT	Wind Advisory	BIS	Adams, Billings, Bowman, Burleigh, Dickey, Divide and 16 more	14 hr
Apr 29, 9:30 AM CDT	Wind Advisory	BIS	Dickey, Foster, Kidder, LaMoure, Logan, McIntosh and 4 more	11 hr
Apr 29, 4:23 PM CDT	Blizzard Warning	BIS	Adams, Billings, Bottineau, Bowman, Burke, Burleigh and 20 more	41 hr
Apr 29, 4:23 PM CDT	Winter Weather Advisory	BIS	Dickey, Emmons, LaMoure, Logan, McIntosh, Stutsman	21 hr

Nearby

Winter Storm Watches in North Dakota, 2011 Every winter storm watch in 2011

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.