Alert archive / North Dakota / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 39, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 18, 1993, 6:56 PM CDT for Sheridan County, North Dakota. It was in force for 24 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1993, 6:56 PM CDT (23:56 UTC)
- Expired
- Jul 18, 1993, 7:20 PM CDT
- In force
- 24 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Sheridan County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.9 hours before the alert went out and 93 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
- 41 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 873 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS1 KBIS 182356 RRA
SVRBIS
NDC083-103-190100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
656 PM CDT SUN JUL 18 1993
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 800 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE CENTRAL PART OF NORTH DAKOTA
EAST CENTRAL SHERIDAN...WEST CENTRAL WELLS
AT 650 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED BY RADAR IN
EAST CENTRAL SHERIDAN COUNTY OF NORTH DAKOTA...60 MILES NORTHEAST
OF BISMARCK...MOVING EAST AT 30 MILES AN HOUR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAIN MAY FLOOD ROADWAYS QUICKLY
SO AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT.
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.
RJRWhat 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 18, 4:11 PM CDT, 2 hours 45 minutes before
NDZ001-018-182230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 410 PM CDT SUN JUL 18 1993 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM CDT FOR MOST OF CENTRAL NORTH DAKOTA AND A SEVERE THUNDERTORM WATCH HAS BEEN ISSUED FOR EASTERN NORTH DAKOTA UNTIL 10 PM CDT... AT 410 PM CDT WEATHER RADARS INDICATED A LINE OF STRONG THUNDERSTORMS THAT EXTENDED FROM NORTH OF DEVILS LAKE TO SOUTHEAST OF BISMARCK. THE LINE WAS MOVING TO THE EAST AT 35 MPH. SOME OF THE THUNDERSTORMS CONTAINED VERY HEAVY RAIN...SMALL HAIL AND STRONG GUSTY WINDS. THIS LINE WILL BE IN THE DEVILS LAKE AREA BY 430 PM...AND THE JAMESTOWN AREA AROUND 5 PM. A SECOND LINE OF THUNDERSTORMS EXTENDED FROM NORTHWEST OF MINOT NEAR THE CANADIAN BORDER...SOUTHWARD TO CENTRAL LAKE SAKAKAWEA. THIS LINE OF STRONG THUNDERSTORMS WAS ALSO MOVING TO THE EAST AT 35 MPH. THIS LINE OF THUNDERSTORMS WILL BE IN THE MINOT AREA BY 430 PM. ALL OF THESE THUNDERSTORMS HAVE THE POTENTIAL OF PRODUCING LARGE HAIL... DAMAGING WINDS AND POSSIBLY TORNADOES. AS THUNDERSTORMS APPROACH...BE PREPARED TO TAKE SHELTER. TO REPORT SEVERE WEATHER...CALL YOUR NEAREST LAW ENFORCEMENT AGENCY AND HAVE THEM RELAY THE INFORMATION TO STATE RADIO. KAS
Special weather statement, Jul 18, 4:43 PM CDT, 2 hours 13 minutes before
NDZ001-002-003-005-181910- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 440 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WARNING FOR EASTERN MONTRAIL COUNTY HAS EXPIRED... THE THUNDERSTORMS THAT PRODUCED THE SEVERE WEATHER IN EASTERN MOUNTRAIL COUNTY HAS MOVED TO THE EAST. STRONG THUNDERSTORMS WITH HEAVY RAIN WERE CONTINUING OVER WESTERN NORTH DAKOTA. THE STRONGEST STORMS WERE IN THE WILLISTON AREA...ALSO SOUTH OF KEENE OVER EASTERN MCKENZIE COUNTY...AND JUST SOUTH OF GRASSY BUTTE OVER SOUTHEAST MCKENZIE COUNTY. THE STORMS WERE MOVING EAST AT 35 MPH. HEAVY RAINFALL FROM THESE THUNDERSTORMS MAY CAUSE ROADWAYS AND SMALL STREAMS TO BECOME FLOODED. DO NOT ATTEM PT TO CROSS WATER COVERED ROADS. REMEMBER ALL THUNDERSTORMS PRODUCE DEADLY LIGHTNING. KENNEDY
Special weather statement, Jul 18, 4:52 PM CDT, 2 hours 4 minutes before
NDZ001-008-182330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 450 PM CDT SUN JUL 18 1993 ...A TORNADO WATCH NO LONGER IN EFFECT FOR PORTIONS OF SOUTHWEST NORTH DAKOTA... THE TORNADO WATCH IS NO LONER IN EFFECT FOR SOUTHWEST NORTH DAKOTA. THIS INCLUDES THE COUNTIES OF ADAMS...GOLDEN VALLEY...BILLINGS... HETTINGER...SLOPE...BOWMAN...DUNN...AND STARK. THE TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF CENTRAL NORTH DAKOTA UNTILh 9 PM CDT WITH A SEVERE THUNDERSTORM WATCH IN EFFECT FOR THE EAST UNTIL 10 PM.
Special weather statement, Jul 18, 5:14 PM CDT, 1 hour 42 minutes before
NDZ001-018-182330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 512 PM CDT SUN JUL 18 1993 ...TORNADO WATCH UNTIL 9 PM FOR MUCH OF CENTRAL NORTH DAKOTA... AT 5 PM CDT WEATHER RADAR AND SATELLITE DATA SHOWED A LINE OF THUNDERSTORMS FROM JUST SOUTH OF DEVILS LAKE TO 60 MILES SOUTHEAST OF BISMARCK IN SOUTHERN EMMONS COUNTY. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 35 MPH. NO REPORTS OF SEVERE WEATHER HAVE BEEN RECEIVED...HOWEVER THE STORMS ARE CAPIABLE OF PRODUCING LARGE HAIL...VERY HEAVY RAINFALL AND POSSIBLE TORNADOS. IF THREATENING WEATHER APPROACHES SEEK INDOOR SHELTER IMMEDIATELY. TURNER
Special weather statement, Jul 18, 5:27 PM CDT, 1 hour 29 minutes before
NDZ001-002-003-005-182330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLISTON ND 530 PM CDT SUN JUL 18 1993 ...RAINSHOWERS AND A FEW THUNDERSTORMS CONTINUE OVER NORTHWEST NORTH DAKOTA... AT 525 PM CDT RADAR INDICATED SCATTERED THUNDERSTORMS OVER NORTHWEST NORTH DAKOTA A FEW WITH VERY HEAVY RAIN. THE STRONGEST STORMS WERE OVER EASTERN WILLIAMS COUNTY 5 MILES EAST OF EPPING. THESE STORMS WERE MOVING EAST AT 35 MILES AN HOUR. THE TOWNS OF RAY AND TIOGA WERE IN THE PATHS OF THESE STORMS. THESE STORMS WILL LIKELY PRODUCE HEAVY RAIN AND SMALL HAIL ALONG WITH DEADLY LIGHTNING. SMALL STREAMS AND ROADWAYS MAY BECOME FLOODED. DO NOT ATTEMPT TO DRIVE OVER FLOODED ROADWAYS. b KENNEDY
Special weather statement, Jul 18, 6:04 PM CDT, 52 minutes before
NDZ001-018-190030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 600 PM CDT SUN JUL 18 1993 AT 555 PM CDT WEATHER RADAR CONTINUED TO SHOW STRONG THUNDERSTORMS OVER EAST CENTRAL NORTH DAKOTA. THE THUNDERSTORMS WERE SCATTERED FROM 60 MILES NORTH TO 65 MILES SOUTHWEST OF JAMESTOWN. THE STRONGEST THUNDERSTORMS WERE LOCATED JUST NORTHEAST OF JAMESTOWN AND 50 MILES SOUTHWEST OF JAMESTOWN IN NORTHEAST MCINTOSH COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. OTHER STRONG THUNDERSTORMS WERE LOCATED 50 MILES NORTH OF BISMARCK... NEAR TURTLE LAKE IN EAST CENTRAL MCLEAN COUNTY...AND 25 MILES SOUTH OF MINOT...NEAR MAX IN NORTHCENTRAL MCLEAN COUNTY. THESE STORMS WERE MOVING EAST AT 30 MPH. NO SEVERE WEATHER HAS BEEN REPORTED...HOWEVER THE STRONG THUNDERSTORMS ARE CAPIABLE OF PRODUCING LARGE HAIL...VERY HEAVY RAIN...DEADLY LIGHTENING AND POSSIBLE TORNADOS. IF THREATENING WEATHER APPROACHES SEEK INDOOR SHELTER IMMEDIATELY. REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE AREA OF CENTRAL NORTH DAKOTA UNTIL 9 PM CDT TONIGHT. TURNER
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 1:22 PM CDT | Tornado Warning | BIS | Williams | 38 min |
| Jul 18, 1:34 PM CDT | Severe Thunderstorm Warning | BIS | Ward | 26 min |
| Jul 18, 1:53 PM CDT | Severe Thunderstorm Warning | BIS | Williams | 37 min |
| Jul 18, 3:24 PM CDT | Severe Thunderstorm Warning | BIS | Mountrail | 66 min |
| Jul 18, 3:42 PM CDT | Severe Thunderstorm Warning | BIS | McLean | 48 min |
| Jul 18, 4:28 PM CDT | Severe Thunderstorm Warning | BIS | McLean | 62 min |
| Jul 18, 6:56 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 54 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1993Every severe thunderstorm warning in 1993
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.