Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 169, NWS Bismarck, ND

September 15, 1997Adams County, Hettinger County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Sep 15, 1997, 9:34 PM MDT for Adams County, Hettinger County, North Dakota. It was in force for 41 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
Sep 15, 1997, 9:34 PM MDT (03:34 UTC)
Expired
Sep 15, 1997, 10:15 PM MDT
In force
41 min
Issued by
NWS Bismarck, ND
Area
Whole counties

Counties Adams County, ND, Hettinger County, ND

The radar

The Bismarck radar (KBIS), 144 km from the middle of the area, began a volume at 03:33 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, 3.6 hours before the alert went out and 148 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 1997-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 353 joules per kilogram.LCLLFCEL10008507005003002001001 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 1997-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
353 J/kg
Mixed-layer CIN
-297 J/kg
Mixed-layer LCL
1197 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
Sep 15, 10:36 PM MDTSevere Thunderstorm WarningBISMcLean, Ward69 min
Sep 15, 11:13 PM MDTSevere Thunderstorm WarningBISBurleigh, Morton47 min
Sep 15, 11:46 PM MDTSevere Thunderstorm WarningBISSheridan29 min
Sep 15, 11:54 PM MDTSevere Thunderstorm WarningBISBurleigh, Kidder66 min
Sep 16, 12:14 AM MDTSevere Thunderstorm WarningBISPierce, Wells46 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1997Every severe thunderstorm warning in 1997

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.