Alert archive / North Dakota / Winter Storm Watches in 2011

Winter Storm Watch 3, NWS Bismarck, ND

March 20, 201127 counties in North Dakota

NWS Bismarck, ND issued this winter storm watch at Mar 20, 2011, 3:28 AM MDT for 27 counties in North Dakota. It took effect at Mar 22, 2011, 12:00 AM MDT. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 20, 2011, 3:28 AM MDT (09:28 UTC)
In effect from: Mar 22, 2011, 12:00 AM MDT
Expired: Mar 21, 2011, 3:57 AM MDT
In force
Issued by: NWS Bismarck, ND

All 27 counties

Billings County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Dickey County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Stark County, ND, Stutsman County, ND, Wells County, ND, Williams County, ND

The radar

The Bismarck radar (KBIS), 83 km from the middle of the area, began a volume at 09:32 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 00:00Z, 9.5 hours before the alert went out and 352 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: 1345 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 538 m²/s²
0-3 km storm-relative helicity: 619 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 Mar 19, 11:55 PM MDT, 3 hours 33 minutes earlier.

Area forecast discussion, Mar 19, 11:55 PM MDT, 3 hours 33 minutes before

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Hazardous weather outlook, Mar 19, 6:27 PM MDT, 9 hours 1 minute before

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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; radar from the NEXRAD Level II archive.