Alert archive / North Dakota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 16, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at May 21, 1994, 6:46 PM CDT for McHenry County, North Dakota. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- May 21, 1994, 6:46 PM CDT (23:46 UTC)
- Expired
- May 21, 1994, 7:45 PM CDT
- In force
- 59 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County McHenry County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.8 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 7 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 21, 2:07 PM CDT, 4 hours 39 minutes before
NDZ001>053-212100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 205 PM CDT SAT MAY 21 1994 ...THUNDERSTORMS CONTINUING OVER CENTRAL NORTH DAKOTA... AT 205 PM CDT SCATTERED THUNDERSTORMS WERE OCCURRING OVER CENTRAL NORTH DAKOTA. THE STRONGEST STORM WAS LOCATED NEAR WASHBURN...30 MILES NORTH OF BISMARCK. THIS THUNDERSTORM DROPPED MARBLE SIZE HAIL AROUND 1 PM CDT. ALL OF THE THUNDERSTORMS WERE MOVING NORTH NORTHEAST AT 30 TO 35 HMILES AN HOUR.
Special weather statement, May 21, 2:09 PM CDT, 4 hours 37 minutes before
NDZ001>053-212100- SPECIAL WEATHER STATEMENT ...CORRECTION...TIME OF HAIL... NATIONAL WEATHER SERVICE BISMARCK ND 205 PM CDT SAT MAY 21 1994 ...THUNDERSTORMS CONTINUING OVER CENTRAL NORTH DAKOTA... AT 205 PM CDT SCATTERED THUNDERSTORMS WERE OCCURRING OVER CENTRAL NORTH DAKOTA. THE STRONGEST STORM WAS LOCATED NEAR WASHBURN...30 MILES NORTH OF BISMARCK. THIS THUNDERSTORM DROPPED MARBLE SIZE HAIL AROUND 2 PM CDT. ALL OF THE THUNDERSTORMS WELRE MOVING NORTH NORTHEAST AT 30 TO 35 MILES AN HOUR.
Special weather statement, May 21, 2:21 PM CDT, 4 hours 25 minutes before
NDZ002-010-212020- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 217 PM CDT SAT MAY 21 1994 ...DEVELOPING THUNDERSTORMS OVER NORTHWEST ORTH DAKOTA... AT 210 PM CDT WILLISTON RADAR INDICATED TWO RAPIDLY DEVELOPING THUNDERSTORMS. THE FIRST THUNDERSTORM WAS 40 MILES NORHEAST OF WILLISTON...OR 10 MILES SOUTHWEST OF POWERS LAKE IN MOUNTRAIL COUNTY. CURRENT MOVEMENT OF THE STORM WILL PLACE POWERS LAKE AND BATTLEVIEW IN THE PATH OF THE STORM. THE SECOND THUNDERSTORM WAS 65 MILS NORTHEAST OF WILLISTON...15 MILES SOUTHWEST OF BOWBELL IN BURKE COUNTY. THIS STORM WILL BE PASSING IN OR NEAR THE TOWNS OF LIGNIGHT...BOWBELLS...FLAXTON AND COTEAU. STRONG GUSTY WINDS...FREQUENXT LIGHTNING...VERY HEAVY RAINFALL AND SMALL HAIL MAY ACCOMPANY THESE STORMS. IN OPEN AREAS...GO TO A LOW PLACE SUCH AS A RAVINE OR VALLEY. LEWIS
Special weather statement, May 21, 2:31 PM CDT, 4 hours 15 minutes before
NDZ002-010-212020- SPECIAL WEATHER STATEMENTSPELLING... NATIONAL WEATHER SERVICE WILLISTON ND 217 PM CDT SAT MAY 21 1994 ...DEVELOPING THUNDERSTORMS OVER NORTHWEST NORTH DAKOTA... AT 210 PM CDT WILLISTON RADAR INDICATED TWO RAPIDLY DEVELOPING THUNDERSTORMS. THE FIRST THUNDERSTORM WAS 40 MILES NORHEAST OF WILLISTON...OR 10 MILES SOUTHWEST OF POWERS LAKE IN MOUNTRAIL COUNTY. CURRENT MOVEMENT OF THE STORM WILL PLACE POWERS LAKE AND BATTLEVIEW IN THE PATH OF THE STORM. THE SECOND THUNDERSTORM WAS 65 MILS NORTHEAST OF WILLISTON...15 MILES SOUTHWEST OF BOWBELL IN BURKE COUNTY. THIS STORM WILL BE PASSING IN OR NEAR THE TOWNS OF LIGNIGHT...BOWBELLS...FLAXTON AND COTEAU. STRONG GUSTY WhINDS...FREQUENT LIGHTNING...VERY HEAVY RAINFALL AND SMALL HAIL MAY ACCOMPANY THESE STORMS. IN OPEN AREAS...GO TO A LOW PLACE SUCH AS A RAVINE OR VALLEY. LEWIS
Special weather statement, May 21, 5:21 PM CDT, 1 hour 25 minutes before
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</html>The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 2:23 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Sheridan | 52 min |
| May 21, 3:10 PM CDT | Severe Thunderstorm Warning | BIS | Logan | 65 min |
| May 21, 3:23 PM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 22 min |
| May 21, 3:43 PM CDT | Severe Thunderstorm Warning | BIS | Renville | 47 min |
| May 21, 4:33 PM CDT | Severe Thunderstorm Warning | BIS | Renville | 42 min |
| May 21, 4:59 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Oliver | 61 min |
| May 21, 5:42 PM CDT | Severe Thunderstorm Warning | BIS | Ward | 63 min |
| May 21, 6:02 PM CDT | Severe Thunderstorm Warning | BIS | McLean | 28 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1994Every severe thunderstorm warning in 1994
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.