Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 58, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 16, 1990, 8:13 PM CDT for McLean County, Mercer County, North Dakota. It was in force for 47 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
- Jul 16, 1990, 8:13 PM CDT (01:13 UTC)
- Expired
- Jul 16, 1990, 9:00 PM CDT
- In force
- 47 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
Counties McLean County, ND, Mercer County, ND
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 9:00 PM CDT | Hail 1 | Mclean, ND |
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 00:00Z, 1.2 hours before the alert went out and 101 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
- 1191 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 2488 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 10.3
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, Jul 16, 5:06 PM CDT, 3 hours 7 minutes before
NDZ002-162305 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 505 PM CDT MON JUL 16 1990 ...STRONG THUNDERSTORMS ENTERING NORTHWESTERN NORTH DAKOTA... AT 500 PM CDT A STRONG THUNDERSTORM WAS LOCATED 25 MILES NORTHWEST OF THE CITY OF WILLISTON AND MOVING TO THE EAST AT ABOUT 20 MPH. THIS THUNDERSTORM WILL PASS THROUGH OR JUST NORTH OF THE CITY OF WILLISTON WITHIN THE NEXT HALF HOUR. ANOTHER STRONG THUNDERSTORM WAS LOCATED 20 MILES SOUTHWEST OF WILLISTON AND WAS ALSO MOVING TO THE EAST AT 20 MPH. THIS THUNDERSTORM WILL PASS VERY NEAR TO...OR THROUGH THE TOWN OF TRENTON WITHIN THE NEXT HALF HOUR. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING DEADLY LIGHTNING STRIKES... SM9ALL HAIL...STRONG GUSTY WIND AND BRIEF HEAVY RAIN. IF THESE THUNDERSTORMS APPROACH YOUR AREA SEEK SHELTER INDOORS. MARTIN
Special weather statement, Jul 16, 7:09 PM CDT, 1 hour 4 minutes before
NDZ001>011-170100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 715 PM CDT MON JUL 17 1990 ...A TORNADO WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA UNTIL MIDNIGHT CDT... AT 700 PM CDT WEATHER RADAR INDICATED SCATTERED STRONG THUNDERSTORMS EXTENDING FROM EAST OF WILLISTON SOUTHWARD TO NEAR KILLDEER IN DUNN COUNTY...OR ABOUT 35 MILES NORTH OF DICKINSON. THESE STORMS ARE MOVING TO THE EAST/SOUTHEAST AT 20 TO 25 MPH. NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME...HOWEVER CONDITIONS REMAIN FAVORABLE FOR THE DEVELOPMENT OF SEVERE STORMS AND POSSIBLY A TORNADO. PERSONS IN WESTERN AND CENTRAL NORTH DAKOTA SHOULD REMAIN ALERT TO CHAGNING WEATHER CONDITIONS AND STAY TUNED FOR FURTHER STATEMENTS OR WARNINGS. FORS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:12 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 63 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1990Every severe thunderstorm warning in 1990
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.