Alert archive / North Dakota / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 70, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 22, 1990, 9:57 PM CDT for McHenry County, North Dakota. It was in force for 33 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
- Aug 22, 1990, 9:57 PM CDT (02:57 UTC)
- Expired
- Aug 22, 1990, 10:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County McHenry 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 |
|---|---|---|---|
| Aug 22, 10:20 PM CDT | Hail 0.75 | Mchenry, 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, 3.0 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
- 2267 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1765 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBIS 230258 COR
SVRBIS
NDC049-230330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED ...CORRECTION...
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
957 PM CDT WED AUG 22 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTH CENTRAL PART OF NORTH DAKOTA
CENTRAL AND NORTHEAST MCHENRY
AT 950PM CDT...WEATHER RADAR AND SURFACE REPORTS INDICATED A
SEVERE THUNDERSTORM WITH GOLFBALL SIZE HAIL 4 MILES EAST OF
GRANVILLE OR 30 MILES EAST OF MINOT. THE STORM WAS MOVING TO THE
NORTHEAST AT 20 MPH.
THIS STORM CAN ALSO PRODUCE FLOODING OF LOW LYING AREAS.
IF YOU ARE IN AN AREA THREATENED BY }THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN.
KASWhat 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, Aug 22, 7:53 PM CDT, 2 hours 4 minutes before
NDZ005>011-230200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 750 PM CDT WED AUG 22 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT FOR MUCH OF CENTRAL NORTH DAKOTA... AT 750 PM CDT A LINE OF THUNDERSTORMS WAS LOCATED FROM NEAR BOTTINEAU BOTTINEAU...NORTHEAST OF MINOT...DOWN TO BISMARCK...AND SOUTH INTO SOUTH DAKOTA. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 10 MPH. THESE STORMS WERE PRODUCING HEAVY RAIN...GUSTY WINDS AND DANGEROUS LIGHTNING. THE STRONGEST STORMS IN THE LINE WERE IN THE BOTTINEAU AREA IN THE NORTH...JUST WEST OF BISMARCK...AND IN THE FT YATES AREA IN THE SOUTH. THESE STORMS WERE ALSO PRODUCING HEAVY RAIN...WIND AND LIGHTNING ...BUT WERE ALSO PRODUCING SOME SMALL HAIL. SINCE ALL OF THESE THUNDERSTORMS WERE MOVING SLOWLY...FLOODING OF LOW LYING AREAS...STREETS AND UNDERPASSES IS POSSIBLE. KAS
Special weather statement, Aug 22, 8:27 PM CDT, 1 hour 30 minutes before
NDZ007-230230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 830 PM CDT WED AUG 22 1990 ...THUNDERSTORMS FINALLY ARRIVE IN BISMARCK AND MANDAN... AT 830 PM CDT...THUNDERSTORMS WITH LIGHTNING AND RAIN CONTINUED IN THE BISMARCK MANDAN AREA. HOWEVER...THE HEAVIEST RAINFALLS WERE STILL SOUTHWEST OF BISMARCK...SOUTH OF MANDAN...MOVING SLOWLY TO THE NORTH NORTHEAST. RADAR INDICATED THAT THESE STORMS WERE PRODUCING HEAVY RAIN. IF THESE STORMS HOLD TOGETHER...SOME FLOODING OF LOW LYING AREAS... STREETS AND UNDERPASSES IS POSSIBLE. SOME SMALL HAIL IS ALSO A POSSIBILITY. WHILE A SEVERE THUNDERSTORM WATCH DOES REMAIN IN EFFECT FOR MUCH OF CENTRAL NORTH DAKOTA UNTIL 10 PM CDT...IT IS NOT LIKELY THAT THE STORMS IN THE BISMARCK/MANDAN AREA WILL BECOME SEVERE. KAS
Special weather statement, Aug 22, 8:38 PM CDT, 1 hour 19 minutes before
NDZ001>003-005-230230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 835 PM CDT WED AUG 22 1990 ...THUNDERSTORMS DIMINISHING OVER NORTHWESTERN NORTH DAKOTA... AT 830 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON SHOWED A RAPID DECREASE IN THUNDERSTORM ACTIVITY OVER WESTERN NORTH DAKOTA. THE THUNDERSTORMS THAT WERE OVER BURKE COUNTY DURING THE PAST HOUR HAVE MOVED INTO SOUTHERN CANADA. AN ISOLATED THUNERSHOWER WAS LOCATED 35 35 MILES WEST OF WILLISTON IN WESTERN MOUNTRAIL COUNTY. THIS THUNDERSHOWER WAS MOVING TO THE NORTHEAST AT 25 MPH AND SOME BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES CAN BE EXPECTED WITH THIS STORM. RICHMOND
Special weather statement, Aug 22, 8:41 PM CDT, 1 hour 16 minutes before
NDZ001>003-005-230230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND...CORRECTION... 835 PM CDT WED AUG 22 1990 ...THUNDERSTORMS DIMINISHING OVER NORTHWESTERN NORTH DAKOTA... AT 830 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WILLISTON SHOWED A RAPID DECREASE IN THUNDERSTORM ACTIVITY OVER WESTERN NORTH DAKOTA. THE THUNDERSTORMS THAT WERE OVER BURKE COUNTY DURING THE PAST HOUR HAVE MOVED INTO SOUTHERN CANADA. AN ISOLATED THUN#ERSHOWER WAS LOCATED 35 MILES WEST OF WILLISTON IN WESTERN MOUNTRAIL COUNTY. THIS THUNDERSHOWER WAS MOVING TO THE NORTHEAST AT 25 MPH AND SOME BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING STRIKES CAN BE EXPECTED WITH THIS STORM. RICHMOND
Special weather statement, Aug 22, 8:55 PM CDT, 1 hour 2 minutes before
NDZ005>011-230300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 850 PM CDT WED AUG 22 1990 ...THE SEVERE THUNDERSTORM WATCH FOR MUCH OF CENTRAL NORTH DAKOTA WILL BE CANCELLED AT 9 PM CDT... WHILE THUNDERSTORM ACTIVITY IS EXPECTED TO CONTINUE ACROSS POSTIONS OF NORTH DAKOTA TONIGHT...THE LIKELYHOOD OF SEVERE WEATHER HAS DIMINISHED. IT IS MORE LIKELY THAT THUNDERSTORMS WILL BE PRODUCING HEAVY RAIN INSTEAD OF LARGE HAIL OR DAMAGING WINDS. AT 850 PM CDT THUNDERSTORMS CONTINUED FROM NORTHEAST OF BOTTINEAU IN THE NORTH DOWN THROUGH THE BISMARCK MANDAN AREA...SOUTH INTO NORTHCENTRAL SOUTH DAKOTA. THE STRONGEST STORMS WERE IN THE BOTTINEAU AREA AND THE BISMARCK AREA. THESE STORMS WERE PRODUCING VERY HEAVY RAIN. ALL OF THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT LESS THAN 15 MPH...WHICH MEANS THAT SOME FLOODING OF LOW LYING AREAS IS POSSIBLE. WHILE THE SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT...EVERYONE 6SHOULD STILL KEEP ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. KAS
Special weather statement, Aug 22, 9:38 PM CDT, 19 minutes before
NDZ005-009-010-230330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 935 PM CDT WED AUG 22 1990 ...WIDELY SCATTERED INTENSE THUNDERSTORMS CONTINUE OVER CENTRAL NORTH DAKOTA... AT 935 PM CDT INTENSE THUNDERSTORMS WERE LOCATED 20 TO 30 MILES SOUTHEAST OF MINOT...OR FROM NEAR VELVA TO NEAR BALFOUR. IN ADDITION TO HEAVY RAINS AND FREQUENT LIGHTNING STRIKES THESE THUNDERSTORMS MAY ALSO CONTAIN SMALL HAIL AND STRONG GUSTY WINDS. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MILES AN HOUR AND BY 1030 PM CDT THE THUNDERSTOMRS WILL BE NEAR TOWNER. OTHER THUNDERSTORMS WITH BRIEF HEAVY RAINS AND FREQUENT LIGHTNING STRIKES WERE LOCATED 15 MILES NORTHWEST OF BISMARCK...25 MILES N^ORTHEAST OF BISMARCK...AND 20 MILES EAST OF BISMARCK. BE PREPARED TO MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES. JOBE
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.