Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 129, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 14, 1998, 11:21 AM CDT for Clearwater County, Polk County, Minnesota. It was in force for 34 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 14, 1998, 11:21 AM CDT (16:21 UTC)
- Expired
- Jul 14, 1998, 11:55 AM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Clearwater County, MN, Polk County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 14, 11:33 AM CDT | Hail 0.75 | Gully, MN |
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
International Fa, MN (KINL), launched 12:00Z, 4.4 hours before the alert went out and 216 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2066 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 172 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 KFAR 141621 RRA SVRFAR MNC029-119-141655- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1121 AM CDT TUE JUL 14 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CLEARWATER COUNTY IN NORTHWESTERN MINNESOTA EASTERN POLK COUNTY IN NORTHWESTERN MINNESOTA * UNTIL 1155 AM CDT * AT 1120 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERTSTORM 2 MILES SOUTHEAST OF OKLEE...OR 30 MILES SOUTHEAST OF THIEF RIVER FALLS. THIS STORM WAS MOVING NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR...
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 Jul 14, 10:25 AM CDT, 56 minutes earlier.
Area forecast discussion, Jul 14, 10:25 AM CDT, 56 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1025 AM CDT TUE JUL 14 1998 FORECAST PROBLEM FOR TODAY IS PCPN. VIS SATELLITE IMAGERY SHOWS MCS MOVG ACROSS MOSTLY MN SIDE OF CWFA. SFC ANALYSIS HAS COLD FRONT EXTENDING THROUGH CENTRAL NORTH DAKOTA. MODELS KEEP TIMING OF FRONT INTO RRV BEFORE 00Z AND WITH STRONG SFC MOISTURE CONVERGENCE...A 120KT JET PROGRESSING ACROSS S CANADA AND ALL THE OUTFLOW BOUNDARIES LEFT FROM THIS MORNINGS CONVECTION...EXPLOSIVE DEVELOPMENT OF SVR TSRA EXPECTED THIS AFTERNOON...ESPECIALLY IN E ND WHERE CURRENTLY GETTING SUN. CURRENT FORECASTS HAVE PRETTY GOOD HANDLE ON PCPN SITUATION...BUT WILL NEEDD TO CUT BACK HIGH TEMPS DUE TO MORNING PCPN AND CLOUD COVER INHIBITING SOLAR HEATING. NG
In the hours before
Special weather statement, Jul 14, 7:34 AM CDT, 3 hours 47 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-151200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 734 AM CDT TUE JUL 14 1998 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA TODAY... THE SLIGHT RISK OF SEVERE WEATHER IS EXPECTED ACROSS ALL OF EASTERN NORTH DAKOTA AND ALL OF NORTHWEST MINNESOTA FOR TODAY AND THIS EVENING. THUNDERSTORMS WILL MOVE ACROSS MUCH OF EASTERN NORTH DAKOTA AND THE FAR NORTH PART OF NORTHWEST MINNESOTA THIS MORNING. ADDITIONAL THUNDERSTORMS WILL DEVELOP EARLY THIS AFTERNOON IN EASTERN NORTH DAKOTA AND MOVE INTO NORTHWEST MINNESOTA BY LATE AFTERNOON AND EARLY EVENING. THE STORMS WILL MOST LIKELY PRODUCE DAMAGING WINDS AND SOME LARGE HAIL. LOCALLY HEAVY RAIN CAN ALSO BE EXPECTED WITH THE STORMS. A COLD FRONT OVER WESTERN NORTH DAKOTA WILL MOVE INTO THE AREA BY EARLY AFTERNOON WITH THUNDERSTORMS OCCURRING ALONG THE FRONT. MOST OF THE THUNDERSTORMS WILL MOVE EAST OF THE AREA BY SUNSET. ALSO ONE SHOULD BE PREPARD FOR LOCALLY HEAVY RAIN IN A SHORT PERIOD OF TIME. . THE HAZARDOUS WEATHER OUTLOOK FOR EASTERN NORTH DAKOTA AND NORTHWESTERN MINNESOTA IS ISSUED DAILY BY 7 AM FROM THE NATIONAL WEATHER SERVICE IN GRAND FORKS. HOPPES
Special weather statement, Jul 14, 7:34 AM CDT, 3 hours 47 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-151200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 734 AM CDT TUE JUL 14 1998 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA TODAY... THE SLIGHT RISK OF SEVERE WEATHER IS EXPECTED ACROSS ALL OF EASTERN NORTH DAKOTA AND ALL OF NORTHWEST MINNESOTA FOR TODAY AND THIS EVENING. THUNDERSTORMS WILL MOVE ACROSS MUCH OF EASTERN NORTH DAKOTA AND THE FAR NORTH PART OF NORTHWEST MINNESOTA THIS MORNING. ADDITIONAL THUNDERSTORMS WILL DEVELOP EARLY THIS AFTERNOON IN EASTERN NORTH DAKOTA AND MOVE INTO NORTHWEST MINNESOTA BY LATE AFTERNOON AND EARLY EVENING. THE STORMS WILL MOST LIKELY PRODUCE DAMAGING WINDS AND SOME LARGE HAIL. LOCALLY HEAVY RAIN CAN ALSO BE EXPECTED WITH THE STORMS. A COLD FRONT OVER WESTERN NORTH DAKOTA WILL MOVE INTO THE AREA BY EARLY AFTERNOON WITH THUNDERSTORMS OCCURRING ALONG THE FRONT. MOST OF THE THUNDERSTORMS WILL MOVE EAST OF THE AREA BY SUNSET. ALSO ONE SHOULD BE PREPARD FOR LOCALLY HEAVY RAIN IN A SHORT PERIOD OF TIME. . THE HAZARDOUS WEATHER OUTLOOK FOR EASTERN NORTH DAKOTA AND NORTHWESTERN MINNESOTA IS ISSUED DAILY BY 7 AM FROM THE NATIONAL WEATHER SERVICE IN GRAND FORKS. HOPPES
Local storm report, Jul 14, 10:50 AM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1050 AM CDT TUE JUL 14 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0720 AM 2NW HOLT MN 0.75 INCH HAIL
07/14/98 MARSHALL
0745 AM HORACE ND 1.75 INCH HAIL
07/14/98 CASS
GODONLocal storm report, Jul 14, 10:50 AM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA/GRAND FORKS
1050 AM CDT TUE JUL 14 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0720 AM 2NW HOLT MN 0.75 INCH HAIL
07/14/98 MARSHALL
0745 AM HORACE ND 1.75 INCH HAIL
07/14/98 CASS
GODONThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 3:07 AM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 48 min |
| Jul 14, 5:32 AM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk | 33 min |
| Jul 14, 7:17 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 33 min |
| Jul 14, 8:09 AM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 31 min |
| Jul 14, 8:19 AM CDT | Severe Thunderstorm Warning | FGF | Roseau | 31 min |
| Jul 14, 11:18 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 32 min |
| Jul 14, 12:58 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Hubbard | 32 min |
| Jul 14, 1:14 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 31 min |
| Jul 14, 1:46 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wilkin | 34 min |
| Jul 14, 2:16 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 34 min |
| Jul 14, 2:36 PM CDT | Tornado Warning | FGF | Otter Tail | 34 min |
| Jul 14, 3:07 PM CDT | Flash Flood Warning | FGF | Otter Tail | 118 min |
| Jul 14, 3:10 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 50 min |
| Jul 14, 4:01 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 49 min |
| Jul 14, 4:53 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 32 min |
| Jul 14, 5:02 PM CDT | Flash Flood Warning | FGF | Otter Tail | 3 hr |
| Jul 14, 5:15 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 35 min |
| Jul 14, 5:26 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 64 min |
| Jul 14, 5:30 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater, Hubbard | 35 min |
| Jul 14, 5:43 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 32 min |
| Jul 14, 5:46 PM CDT | Severe Thunderstorm Warning | FGF | Becker | 34 min |
| Jul 14, 6:16 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 34 min |
| Jul 14, 6:22 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 33 min |
| Jul 14, 6:47 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 43 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.