Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 225, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 26, 1998, 12:10 PM CDT for Towner County, North Dakota. It was in force for 35 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 26, 1998, 12:10 PM CDT (17:10 UTC)
- Expired
- Aug 26, 1998, 12:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Towner County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 26, 12:15 PM CDT | Hail 1 | Bisbee, 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.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 5.2 hours before the alert went out and 239 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
- 611 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 1615 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
479 WUUS1 KFAR 261712 RRA SVRFAR NDC095-261745- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1210 PM CDT WED AUG 26 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TOWNER COUNTY IN NORTH CENTRAL NORTH DAKOTA * UNTIL 1245 PM CDT * AT 1209 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTH OF BISBEE OR 45 MILES NORTHWEST OF DEVILS LAKE MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... INTERSECTION OF RTES 281 AND 66 AT 1220 PM CDT EGELAND AT 1225 PM CDT
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 Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 26, 10:25 AM CDT, 1 hour 45 minutes earlier.
Area forecast discussion, Aug 26, 10:25 AM CDT, 1 hour 45 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1025 AM CDT WED AUG 26 1998 EARLIER STORMS HAVE DISSIPATED...BUT NEW AREA OF SHOWER/TSTMS HAVE DEVELOPED OVER TOWNER CO ND. SATELLITE SHOWS QUITE A BIT OF ACC ACROSS NE 1/2 OF ND AND FAR NRN MN. 12Z UPPER AIR SHOWS MAJOR 850 WARMUP AT BIS OVR PAST 24 HRS JUMPING 7C WHILE 50H TEMPS REMAIN AT -13C. THIS CREATED A VERY UNSTABLE 850-500 LAYER (LI TO -6 CAPES TO 1300) DUE TO WARM ADVECTION...LEADING TO THIS MORNINGS ACC AND SCT TSTMS. MODIFIED INL SOUNDING NOT AS BAD...BUT STILL -3 LI AND CAPES ABOVE 800. IN ADDITION SFC MAP CONTINUES TO SHOW WK TROF/WIND CONVERGENCE ALONG US CANADIAN BORDER FROM LAKE OF THE WOODS TO NORTH OF DVL. THIS FEATURE HAS BEEN PRESENT PAST THREE DAYS AND HAS GENERATED MID TO LATE AFTN TSRA EACH DAY. LOOKING AT HOW UNSTABLE ATMOSPHERE IS EXPECT ADDTIONAL STORMS TO RE-FIRE NEAR THE TROF THIFS AFTN. INCREASED POTENTIAL FOR LOCAL HAILERS WITH WET BULB ZERO DOWN TO 8500 AT BIS. WILL CHECK OVER THE ZONES...BUT WILL KEEP MENTION OF TSTMS THIS AFTN FOR NE ND AND NW MN. TEMPS LOOK FINE. RIDDLE
In the hours before
Special weather statement, Aug 26, 6:35 AM CDT, 5 hours 35 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-261400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 635 AM CDT WED AUG 26 1998 ...A SLIGHT RISK OF SEVERE STORMS ACROSS EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA THIS EVENING AND TONIGHT... AN AREA OF LOW PRESSURE IS EXPECTED TO MOVE TO THE WESTERN DAKOTAS LATE THIS AFTERNOON. A SOUTHERLY FLOW AHEAD OF THE LOW WILL DRAW WARM...MOIST AND UNSTABLE AIR NORTHWARD. WHILE THERE IS A CHANCE FOR THUNDERSTORMS ACROSS NORTHERN PORTIONS OF THE REGION TODAY THE MAIN THREAT FOR SEVERE WEATHER WILL BE LATER THIS EVENING. STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER PORTIONS OF WESTERN AND CENTRAL NORTH DAKOTA LATE THIS AFTERNOON MOVING INTO OUR REGION LATER THIS EVENING AND POSSIBLY CONTINUING INTO THE OVERNIGHT HOURS. THE PRIMARY THREAT FROM THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. IF CONDITIONS WARRANT...AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED THIS AFTERNOON. VOELKER
Special weather statement, Aug 26, 6:35 AM CDT, 5 hours 35 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-261400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 635 AM CDT WED AUG 26 1998 ...A SLIGHT RISK OF SEVERE STORMS ACROSS EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA THIS EVENING AND TONIGHT... AN AREA OF LOW PRESSURE IS EXPECTED TO MOVE TO THE WESTERN DAKOTAS LATE THIS AFTERNOON. A SOUTHERLY FLOW AHEAD OF THE LOW WILL DRAW WARM...MOIST AND UNSTABLE AIR NORTHWARD. WHILE THERE IS A CHANCE FOR THUNDERSTORMS ACROSS NORTHERN PORTIONS OF THE REGION TODAY THE MAIN THREAT FOR SEVERE WEATHER WILL BE LATER THIS EVENING. STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER PORTIONS OF WESTERN AND CENTRAL NORTH DAKOTA LATE THIS AFTERNOON MOVING INTO OUR REGION LATER THIS EVENING AND POSSIBLY CONTINUING INTO THE OVERNIGHT HOURS. THE PRIMARY THREAT FROM THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. IF CONDITIONS WARRANT...AN UPDATED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED THIS AFTERNOON. VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 12:51 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 34 min |
| Aug 26, 3:53 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 32 min |
| Aug 26, 4:01 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 34 min |
| Aug 26, 4:30 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 35 min |
| Aug 26, 5:01 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 34 min |
| Aug 26, 6:08 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 32 min |
| Aug 26, 6:37 PM CDT | Tornado Warning | FGF | Cavalier, Pembina | 33 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1998Every severe thunderstorm warning in 1998
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.