Alert archive / North Dakota / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 113, NWS Bismarck, ND

August 12, 1995Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 12, 1995, 7:19 PM CDT for Sioux County, North Dakota. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Aug 12, 1995, 7:19 PM CDT (00:19 UTC)
Expired
Aug 12, 1995, 7:45 PM CDT
In force
26 min
Issued by
NWS Bismarck, ND
Area
Whole counties

County Sioux County, ND

The radar

The Bismarck radar (KBIS), 76 km from the middle of the area, began a volume at 00:19 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, 0.3 hours before the alert went out and 78 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 1995-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 754 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 1995-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939587897Sfc1 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
754 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1474 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBIS 130022 RRA
SVRBIS
NDC085-130045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
719 PM CDT (619 PM MDT) SAT AUG 12 1995
 
THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CDT (645 PM MDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL NORTH DAKOTA
 
   ...EXTREME WESTERN SIOUX COUNTY
 
AT 615 PM MDT WEATHER RADAR INDICATED A SEVERE THUNDERSTORM 75 MILES
SOUTHWEST OF BISMARCK...OR 32 MILES SOUTH OF ELGIN MOVING SOUTHEAST AT
25 MPH. THIS STORM WILL PRODUCE LARGE HAIL...DAMAGING WINDS AND
TORRENTIAL RAIN WHICH MAY CAUSE LOCALIZED FLOODING. THE STORM WILL CROSS
HIGHWAY 12 AND MOVE INTO SOUTH DAKOTA NEAR MORRISTOWN AROUND 630 PM MDT.
 
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
LEBLANG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 3:17 PM CDTSevere Thunderstorm WarningBISMcHenry43 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 1995Every severe thunderstorm warning in 1995

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.