Alert archive / Minnesota / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 91, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 25, 1999, 4:53 PM CDT for Kittson County, Minnesota. It was in force for 32 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
- Jun 25, 1999, 4:53 PM CDT (21:53 UTC)
- Expired
- Jun 25, 1999, 5:25 PM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Kittson County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 145 km from the middle of the area, began a volume at 21:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 25, 5:11 PM CDT | Hail 1 | Halma, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 25, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 9.9 hours before the alert went out and 257 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
- 1497 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
328 WUUS1 KFAR 252154 RRA SVRFAR MNC069-252225- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 453 PM CDT FRI JUN 25 1999 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN KITTSON COUNTY IN NORTHWESTERN MINNESOTA * UNTIL 525 PM CDT * AT 451 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 29 MILES NORTHEAST OF GRAFTON OR 11 MILES SOUTHWEST OF LAKE BRONSON... MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LAKE BRONSON AT 509 PM CDT LANCASTER AT 515 PM CDT REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED WARNING. VOELKER
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 Jun 25, 3:31 PM CDT, 1 hour 22 minutes earlier.
Area forecast discussion, Jun 25, 3:31 PM CDT, 1 hour 22 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 300 PM CDT FRI JUN 25 1999 H5 HGTS FALL AS UPR LOW OVR THE PAC NW MOVS N OF LAKE WINNIPEG BY 12Z SUNDAY. THERMODYNAMICS RICH ACRS SD AND SRN ND BUT MOST OF UPR DYNAMICS FARTHER TO THE NW OVR MT. ETA WANTS TO HOLD VRT MOTN ACRS SRN ND WHILE NGM ADVECTS TO THE NE ACRS CWFA. VSB STLT LOOP HAS ESSENTIALLY A CLR SKY OVR SRN 2/3 OF ERN ND AND ADJ PARTS OF NW MN AND SHOULD BE A CAPPED ENVIRONMENT. BEST PRES FALLS WERE OCCURRING IN NE ND AHEAD OF WM FNT. PRES FALL CNTR HAS BEEN MOVG N/NE. 88D HAS HAD ISOLD CELLS FORM AHEAD CLR CAPPED AREA IN NRN 1/3 OF CWFA. VAD WNDS OFF OF NEARBY 88D DOES NOT SUGGEST THE H8 SPEED CONVERGENCE INDICATED BY THE ETA. SO NGM APPEARS TO HAVE THE BEST HANDLE ON ABV SCENARIO AND IS PREFERRED. 16Z BIS SNDG SHOWS GOOD CAP WITH ABT 95F SFC TEMP NEEDED TO BREAK CAP AT BIS. WM FRONTAL CONVERGENCE SHOULD AID BREAKING CAP AT L WER TEMPS. SFC LOW E OF DIK AND MOVG E AT GOOD CLIP. LOOK FOR TSTRMS TO FIRE IN CNTRL ND AND MOV NE INTO ERN ND LATE AFTN AND INTO THE EVE. SHOULD BE A WARM HUMID NIGHT WITH HIGH DWPTS. LITTLE COOLER FOR SAT AS TROF/WND SHFT WL MOV INTO ERN ND BY SAT MORN. MID LVL CLD DECK EXPECTED TO HOLD TEMPS DOWN FOR SAT. .EXTENDED...MODELS ADVERTISING A RETURN TO A ZONAL MORE PROGRESSIVE PATTERN BY TUESDAY. H850 TEMPS COOL DOWN TO NEAR 10C FOR MONDAY...AND RECOVER INTO THE TEENS THEREAFTER. THIS WILL RESULT IN TEMPS BELOW NORMAL ON MON...AND NEAR NORMAL FOR TUE/WED. SURFACE HIGH WILL CREST OVER FA ON MONDAY...WITH SEVERAL SHORTWAVES AND COOL AIR ALOFT TO SPELL UNSETTLED WEATHER FOR TUE/WED. WILL INTRODUCE SHOWERS/T-STORMS PFOR TUE/WED AND KEEP MONDAY DRY. .FGF...SVR TSRA WATCH #470 TIL 10 PM CDT. HOPPES/DK
In the hours before
Special weather statement, Jun 25, 11:09 AM CDT, 5 hours 44 minutes before
MNZ003-029-NDZ038-039-049-052-053-251905- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1109 AM CDT FRI JUN 25 1999 ...HIGH HEAT AND HUMIDITY COULD POSE A HEALTH HAZARD THIS AFTERNOON... TEMPERATURES IN THE LOWER 90S ACROSS THE CITIES OF LISBON... WAHPETON...AND FORMAN COUPLED WITH A HIGH HUMIDITY...WILL PRODUCE A HEAT INDEX NEAR 100 DURING THE MIDDLE TO LATE AFTERNOON. AS THE HEAT INTENSIFIES THIS AFTERNOON BE ADVISED THAT YOU SHOULD TAKE PRECAUTION AND DRINK PLENTY OF FLUIDS...ESPECIALLY IF YOU ARE CONDUCTING ANY OUTDOOR ACTIVITIES. TEMPERATURES NEAR 90 ARE FORECAST FOR THE FARGO/MOORHEAD AND VALLEY CITY AREAS THIS AFTERNOON. ALTHOUGH THE HEAT AND HUMIDITY WILL NOT BE QUITE AS INTENSE AS LOCATIONS FARTHER SOUTH...PRECAUTION FROM THE HEAT IS ADVISED...ESPECIALLY IF YOU ARE CONDUCTING IN OUTDOOR ACTIVITIES. BELLES
Special weather statement, Jun 25, 11:09 AM CDT, 5 hours 44 minutes before
MNZ003-029-NDZ038-039-049-052-053-251905- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1109 AM CDT FRI JUN 25 1999 ...HIGH HEAT AND HUMIDITY COULD POSE A HEALTH HAZARD THIS AFTERNOON... TEMPERATURES IN THE LOWER 90S ACROSS THE CITIES OF LISBON... WAHPETON...AND FORMAN COUPLED WITH A HIGH HUMIDITY...WILL PRODUCE A HEAT INDEX NEAR 100 DURING THE MIDDLE TO LATE AFTERNOON. AS THE HEAT INTENSIFIES THIS AFTERNOON BE ADVISED THAT YOU SHOULD TAKE PRECAUTION AND DRINK PLENTY OF FLUIDS...ESPECIALLY IF YOU ARE CONDUCTING ANY OUTDOOR ACTIVITIES. TEMPERATURES NEAR 90 ARE FORECAST FOR THE FARGO/MOORHEAD AND VALLEY CITY AREAS THIS AFTERNOON. ALTHOUGH THE HEAT AND HUMIDITY WILL NOT BE QUITE AS INTENSE AS LOCATIONS FARTHER SOUTH...PRECAUTION FROM THE HEAT IS ADVISED...ESPECIALLY IF YOU ARE CONDUCTING IN OUTDOOR ACTIVITIES. BELLES
Special weather statement, Jun 25, 1:20 PM CDT, 3 hours 33 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-252225- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 120 PM CDT FRI JUN 25 1999 SYNOPSIS...A SIGNIFICANT SEVERE WEATHER OUTBREAK IS LIKELY OVER PORTIONS OF EASTERN NORTH DAKOTA LATE THIS AFTERNOON AND EVENING. A STRONG WARM FRONT WILL MOVE TOWARD THE CANADIAN BORDER BY LATE AFTERNOON. MEANWHILE A FAST MOVING LOW PRESSURE SYSTEM WILL DEVELOP OVER CENTRAL NORTH DAKOTA AND TRACK ALONG THIS WARM FRONT TONIGHT. STRONG TO SEVERE THUNDERSTORMS ARE MOST LIKELY OVER NORTHERN NORTH DAKOTA...WITH A LESSER THREAT ACROSS SOUTHERN NORTH DAKOTA AND NORTHWEST MINNESOTA. AREA OF CONCERN...A MODERATE RISK OF SEVERE WEATHER IS EXPECTED NORTHWEST OF A LINE FROM CARRINGTON TO GRAND FORKS TO HALLOCK. A SLIGHT RISK OF SEVERE WEATHER EXISTS TO THE SOUTH AND EAST OF THIS AREA. TIME...5 PM UNTIL MIDNIGHT. TYPE OF HAZARD...ISOLATED TORNADOES ARE POSSIBLE IN THE MODERATE RISK AREA. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE THROUGH THE ENTIRE RISK AREA. HEAVY RAIN IS ALSO A THREAT.
Special weather statement, Jun 25, 1:20 PM CDT, 3 hours 33 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-252225- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 120 PM CDT FRI JUN 25 1999 SYNOPSIS...A SIGNIFICANT SEVERE WEATHER OUTBREAK IS LIKELY OVER PORTIONS OF EASTERN NORTH DAKOTA LATE THIS AFTERNOON AND EVENING. A STRONG WARM FRONT WILL MOVE TOWARD THE CANADIAN BORDER BY LATE AFTERNOON. MEANWHILE A FAST MOVING LOW PRESSURE SYSTEM WILL DEVELOP OVER CENTRAL NORTH DAKOTA AND TRACK ALONG THIS WARM FRONT TONIGHT. STRONG TO SEVERE THUNDERSTORMS ARE MOST LIKELY OVER NORTHERN NORTH DAKOTA...WITH A LESSER THREAT ACROSS SOUTHERN NORTH DAKOTA AND NORTHWEST MINNESOTA. AREA OF CONCERN...A MODERATE RISK OF SEVERE WEATHER IS EXPECTED NORTHWEST OF A LINE FROM CARRINGTON TO GRAND FORKS TO HALLOCK. A SLIGHT RISK OF SEVERE WEATHER EXISTS TO THE SOUTH AND EAST OF THIS AREA. TIME...5 PM UNTIL MIDNIGHT. TYPE OF HAZARD...ISOLATED TORNADOES ARE POSSIBLE IN THE MODERATE RISK AREA. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE THROUGH THE ENTIRE RISK AREA. HEAVY RAIN IS ALSO A THREAT.
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 5:17 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 33 min |
| Jun 25, 5:23 PM CDT | Tornado Warning | FGF | Roseau | 32 min |
| Jun 25, 5:38 PM CDT | Tornado Warning | FGF | Kittson | 32 min |
| Jun 25, 5:53 PM CDT | Flash Flood Warning | FGF | Roseau | 3 hr |
| Jun 25, 6:01 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 34 min |
| Jun 25, 6:16 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 34 min |
| Jun 25, 6:28 PM CDT | Tornado Warning | FGF | Roseau | 32 min |
| Jun 25, 6:52 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 33 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1999Every severe thunderstorm warning in 1999
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; radar from the NEXRAD Level II archive.