Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 88, NWS Bismarck, ND

August 18, 1998Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 18, 1998, 4:04 AM CDT for Williams County, North Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 18, 1998, 4:04 AM CDT (09:04 UTC)
Expired
Aug 18, 1998, 4:50 AM CDT
In force
46 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County Williams County, ND

The radar

The Minot AFB radar (KMBX), 193 km from the middle of the area, began a volume at 09:03 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 9.1 hours before the alert went out and 272 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 00:00Z on 1998-08-18Temperature 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 00:00Z on 1998-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 130 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
1875 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
130 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:13 AM CDTSevere Thunderstorm WarningBISBottineau47 min
Aug 18, 4:15 PM CDTSevere Thunderstorm WarningBISMorton45 min
Aug 18, 5:00 PM CDTSevere Thunderstorm WarningBISMorton35 min
Aug 18, 5:23 PM CDTSevere Thunderstorm WarningBISMountrail, Ward47 min
Aug 18, 5:38 PM CDTTornado WarningBISMountrail32 min
Aug 18, 5:49 PM CDTSevere Thunderstorm WarningBISRenville, Ward41 min
Aug 18, 6:34 PM CDTSevere Thunderstorm WarningBISBottineau, Renville61 min
Aug 18, 6:34 PM CDTSevere Thunderstorm WarningBISWard61 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1998Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.