Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 162, NWS Bismarck, ND

August 25, 2002Renville County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 25, 2002, 8:34 PM CDT for Renville County, North Dakota. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 25, 2002, 8:34 PM CDT (01:34 UTC)
Expired: Aug 25, 2002, 9:30 PM CDT
In force: 56 min
Issued by: NWS Bismarck, ND
Area: Counties, with a storm outline in the text

County Renville County, ND

What was reported inside it

Time	Report	Where	Remark
Aug 25, 8:45 PM CDT	Hail 0.75	Sherwood, 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.6 hours before the alert went out and 237 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1311 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 2659 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

781 
WUUS53 KBIS 260134
SVRBIS
NDC075-260230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
834 PM CDT SUN AUG 25 2002

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL RENVILLE COUNTY IN NORTH CENTRAL NORTH DAKOTA

* UNTIL 930 PM CDT

* AT 834 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM SHERWOOD TO 13 MILES SOUTH OF
  GRANO...OR FROM 56 MILES NORTH OF MINOT TO 20 MILES NORTHWEST OF
  MINOT...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MOHALL AT 840 PM CDT

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 4899 10185 4848 10172 4854 10148 4899 10151

TURNER

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.

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 25, 2:45 PM CDT, 5 hours 49 minutes earlier.

Area forecast discussion, Aug 25, 2:45 PM CDT, 5 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
245 PM CDT SUN AUG 25 2002

A WEAK TROUGH ALOFT WILL LIKELY GENERATE SINGLE CELLED THUNDERSTORMS
WITH SLOW MOVEMENT IN MAX HEATING LATE THIS AFTERNOON AND EVENING.
THE BEST CHANCE IS IN NORTHWEST ND NEAR THE TROUGHS AXIS. A WEAK
VORTICITY LOBE ROTATING AROUND THE NOSE OF THE TROUGH WILL INCREASE
THE CHANCE OF THUNDERSTORMS BY MIDNIGHT. THEN THE FLOW
WILL BECOME WESTERLY OVER ND AS THE DEEPEST PART OF THE TROUGH MOVES
INTO CANADA. SURFACE LOW PRESSURE AND SHORT WAVES ALOFT
WILL MAINTAIN A CHANCE OF THUNDERSTORMS THROUGH MONDAY NIGHT. FAVORABLE
SHEAR IS LIKELY TO DEVELOP IN THE SOUTHERN PART OF FORECAST AREA LATE
MONDAY TO BRING A CHANCE OF STRONG ORGANIZED THUNDERSTORMS. THE
UPPER FLOW TILTS SOUTHWEST TUESDAY WITH THE DEVELOPMENT OF A WEAK
INVERTED SURFACE TROUGH.

FOR EXTENDED PERIOD...THE MRF MAINTAINS A PERSISTENT UPPER SOUTHWEST
FLOW WITH A CONTINUING SERIES OF SHORT WAVES. A SOUTHERLY SURFACE
FLOW WILL ALSO HELP KEEP DEWPOINTS ABOVE 50 DEG FOR A CHANCE OF MORE
THUNDERSTORMS.

.BIS...NONE.
LM

In the hours before

Local storm report, Aug 25, 6:38 PM CDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

638 PM CDT SUN AUG 25 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0553 PM    4 N PORTAL                ND   1 INCH HAIL

08/25/02   BURKE                          REPORTED BY LAW

                                          ENFORCEMENT OFFICIAL.

Special weather statement, Aug 25, 7:03 PM CDT, 1 hour 31 minutes before

NDZ009-017-260100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
702 PM CDT (602 PM MDT) SUN AUG 25 2002

AT 700 PM CDT (600 PM MDT) LOCAL RADAR INDICATED A LARGE AREA OF
THUNDERSTORMS OVER WILLIAMS AND MCKENZIE COUNTIES...STRETCHING
ROUGHLY FROM BONETRAIL TO GRASSY BUTTE. THE STORMS ARE MOVING
NORTHEAST AT 15 MPH. SMALL HAIL...WIND GUSTS TO 45 MPH...DANGEROUS
LIGHTNING AND PERIODS OF HEAVY RAIN ARE POSSIBLE WITH THESE STORMS
OVER THE NEXT HOUR. USE CAUTION IF OUTDOORS...ESPECIALLY IN LOW
LYING AREAS WHERE MINOR FLOODING MAY OCCUR. STAY TUNED TO NOAA
WEATHER RADIO FOR FURTHER UPDATES.

THOMSON

Local storm report, Aug 25, 8:09 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

809 PM CDT SUN AUG 25 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0730 PM    BOWBELLS                  ND   .75 INCH HAIL

08/25/02   BURKE                          REPORTED BY COOPERATIVE

                                          OBSERVER.

Local storm report, Aug 25, 8:12 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

812 PM CDT SUN AUG 25 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0745 PM    KENMARE                   ND   .75 INCH HAIL

08/25/02   WARD                           REPORTED BY STORM

                                          SPOTTER.

Special weather statement, Aug 25, 8:13 PM CDT, 21 minutes before

NDZ001-009-260215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLISTON ND
813 PM CDT (713 PM MDT) SUN AUG 25 2002

AT 810 PM CDT (710 PM MDT) LOCAL RADAR INDICATED A LARGE AREA OF
SHOWERS AND THUNDERSTORMS OVER WILLIAMS COUNTY...STRETCHING
ROUGHLY FROM BONETRAIL TO TIOGA. THE STORMS ARE MOVING NORTHEAST AT
15 MPH AND WILL SOON MOVE INTO SOUTHERN DIVIDE COUNTY. SMALL
HAIL...WIND GUSTS TO 45 MPH...DANGEROUS LIGHTNING AND PERIODS OF
HEAVY RAIN ARE POSSIBLE WITH THESE STORMS OVER THE NEXT HOUR. USE
CAUTION IF OUTDOORS...ESPECIALLY IN LOW LYING AREAS WHERE MINOR
FLOODING MAY OCCUR. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER
UPDATES.

THOMSON

Local storm report, Aug 25, 8:18 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE BISMARCK ND

818 PM CDT SUN AUG 25 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...

           ....COUNTY LOCATION....

0815 PM    6 NE TOLLEY               ND   .75 INCH HAIL

08/25/02   RENVILLE                       REPORTED BY PUBLIC.

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 7:24 PM CDT	Severe Thunderstorm Warning	BIS	Renville, Ward	66 min
Aug 25, 9:13 PM CDT	Severe Thunderstorm Warning	BIS	Ward	62 min
Aug 26, 11:21 AM CDT	Severe Thunderstorm Warning	BIS	Sioux	54 min
Aug 26, 2:48 PM CDT	Severe Thunderstorm Warning	BIS	Kidder	57 min
Aug 26, 3:24 PM CDT	Severe Thunderstorm Warning	BIS	Wells	66 min
Aug 26, 4:24 PM CDT	Severe Thunderstorm Warning	BIS	Burke	51 min
Aug 26, 4:47 PM CDT	Severe Thunderstorm Warning	BIS	Renville, Ward	58 min
Aug 26, 5:05 PM CDT	Severe Thunderstorm Warning	BIS	Wells	55 min
Aug 26, 5:43 PM CDT	Severe Thunderstorm Warning	BIS	McHenry	62 min
Aug 26, 5:45 PM CDT	Severe Thunderstorm Warning	BIS	Renville	60 min
Aug 26, 6:19 PM CDT	Severe Thunderstorm Warning	BIS	Bottineau	56 min
Aug 26, 6:47 PM CDT	Severe Thunderstorm Warning	BIS	Renville	28 min
Aug 26, 6:50 PM CDT	Severe Thunderstorm Warning	BIS	McHenry	55 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2002 Every severe thunderstorm warning in 2002

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.