Alert archive / North Dakota / Tornado Watches in 1998

Tornado Watch 339

May 13, 199813 counties in North Dakota

The Storm Prediction Center issued this tornado watch at May 13, 1998, 6:00 PM CDT for 13 counties in North Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 13, 1998, 6:00 PM CDT (23:00 UTC)
Expired
May 13, 1998, 11:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Burleigh County, ND, Dunn County, ND, Hettinger County, ND, McHenry County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Sheridan County, ND, Stark County, ND, Ward County, ND

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 13, 6:11 PM CDTSevere Thunderstorm WarningBISDunn64 min
May 13, 6:15 PM CDTSevere Thunderstorm WarningBISStark45 min
May 13, 6:58 PM CDTTornado WarningBISStark47 min
May 13, 7:20 PM CDTTornado WarningBISMorton45 min
May 13, 7:51 PM CDTSevere Thunderstorm WarningBISOliver64 min
May 13, 8:05 PM CDTTornado WarningBISMorton30 min
May 13, 8:31 PM CDTTornado WarningBISOliver29 min
May 13, 8:48 PM CDTTornado WarningBISBurleigh47 min
May 13, 10:22 PM CDTSevere Thunderstorm WarningBISMcLean, Mercer48 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 137 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 1998-05-13Temperature 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 1998-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.1939587897117Sfc1 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
1916 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Tornado Watches in North Dakota, 1998Every tornado watch in 1998

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.