Alert archive / North Dakota / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 18, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at May 22, 1994, 3:47 PM CDT for McHenry County, North Dakota. It was in force for 58 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 22, 1994, 3:47 PM CDT (20:47 UTC)
- Expired
- May 22, 1994, 4:45 PM CDT
- In force
- 58 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County McHenry County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 22, 4:10 PM CDT | Tornado F0 | Towner, ND | Tornado did damage to grain bins and to the roofs of buildings. The path length and width of the tornado were estimated. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 8.8 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
- 18 J/kg
- Mixed-layer CIN
- -354 J/kg
- Mixed-layer LCL
- 1367 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 128 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 22, 3:43 PM CDT, 4 minutes before
NDZ001>053-222300- SPECIALL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 343 PM CDT SUN MAY 22 1994 ...SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT FOR EASTERN MCLEAN COUNTY... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PORTIONS OF CENTRAL AND WESTERN NORTH DAKOTA UNTIL 10 PM CDT THIS EVENING... THE SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES OF NORTH DAKOTA...DUNN AND MOUNTRAIL AT 340 PM CDT RADAR DETECTED SCATTERED THUNDERSTORMS IN CENTRAL AND EASTERN NORTH DAKOTA FROM 30 MILES EAST OF MINOT TO 40 MILES SOUTH OF DICKINSON. THE STRONGEST STORM WAS LOCATED IN NORTHEAST MCLEAN COUNTY...35 MILES SOUTH OF MINOT. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 TO 25 MILES AN HOUR. < RR
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 2:45 PM CDT | Severe Thunderstorm Warning | BIS | McLean | 60 min |
| May 22, 4:00 PM CDT | Severe Thunderstorm Warning | BIS | Oliver | 60 min |
| May 22, 4:20 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Sheridan | 55 min |
| May 22, 4:20 PM CDT | Tornado Warning | BIS | McHenry | 25 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.