Alert archive / North Dakota / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 903

August 27, 200327 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 27, 2003, 3:20 PM MDT for 27 counties in North Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 27, 2003, 3:20 PM MDT (21:20 UTC)
Expired
Aug 27, 2003, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
All 27 counties

Adams County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, Logan County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Stark County, ND, Ward County, ND, Wells County, ND, Williams County, ND

Warnings issued inside it

3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 27, 4:39 PM MDTSevere Thunderstorm WarningBISDunn66 min
Aug 27, 4:51 PM MDTSevere Thunderstorm WarningBISAdams39 min
Aug 27, 5:47 PM MDTSevere Thunderstorm WarningBISGrant43 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.3 hours before the alert went out and 116 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2003-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2003-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 429 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1832 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
429 m²/s²
0-3 km storm-relative helicity
519 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 27, 1:34 PM MDTMesoscale DiscussionSPCAdams, Billings, Bowman, Burke, Burleigh, Divide and 21 more2 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2003Every severe thunderstorm watch in 2003

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.