Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 150, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 24, 2000, 11:43 PM CDT for Wilkin County, Minnesota. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jul 24, 2000, 11:43 PM CDT (04:43 UTC)
- Expired
- Jul 25, 2000, 12:15 AM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Wilkin County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 127 km from the middle of the area, began a volume at 04:45 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 |
|---|---|---|---|
| Jul 25, 12:01 AM CDT | Hail 0.75 | Lawndale, 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
Aberdeen, SD (KABR), launched 00:00Z, 4.7 hours before the alert went out and 233 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
- 2855 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1524 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 250443 SVRFAR MNC167-250515- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1143 PM CDT MON JUL 24 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 1215 AM CDT * AT 1140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF LAWNDALE...OR ABOUT 18 MILES NORTH OF WAHPETON...MOVEMENT WAS TO THE EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LAWNDALE AT 1150 PM CDT... ROTHSAY AT MIDNIGHT CDT... REMEMBER SEVERE THUNDERSTORMS CAN AND OCECASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4660 9670 4638 9658 4645 9629 4663 9632 NNNN GUST
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 24, 8:45 PM CDT, 2 hours 58 minutes earlier.
Area forecast discussion, Jul 24, 8:45 PM CDT, 2 hours 58 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 845 PM CDT MON JUL 24 2000 ...SEVERE TSTM WATCH #615 TIL 10 PM... ANALYSIS...SFC TROF/CDFNT SLOWLY TRACKING EWD THROUGH ERN ND...IS CURRENTLY NR A CAVALIER...LARIMORE TO VALLEY CITY LINE. HAVE DROPPED THE SVR TSTM WATCH WEST OF THIS AREA...WHILE WATCH CONTINUES EAST INTO THE RRV AND NW MN. LOW LVL MOISTURE CONVERGENCE HAS REMAINED FOCUSED INTO SRN MANITOBA AND SERN ND MOST OF EVENING. TSTMS ARE CRRENTLY BUILDING SOUTHWARD FM SRN MAN INTO NWN MN...AND NWD INTO SERN ND. KMVX WIND PROFILE SHOWS MODERATE 0-6KM SHEAR TO AROUND 25M/S WHILE SFC BASED INSTAB PARAMETERS STILL IN MOD TO SVR RANGE AHEAD OF THE FNT...WITH LIS TO MINUS 10 AND SBCAPES 2000-3000 J/KG. NEAR TERM...EXPECT WIDESPREAD SVR THREAT TO DIMINISH SHORTLY AFTER SUNSET...SO WATCH BOX PROBABLY WILL EXPIRE AS SCHEDULED. HOWEVER THERE WILL BE AN ISOLD SVR THREAT THROUGH THE EVENING AS REMAINING CAP DISSOLVES AND TSTMS ARE FREE TO EXPAND AND INTERACT. WOULD EXPECT ACTIVITY TO BE MOST PERSISTANT ALG AND EAST OF THE RED RIVER ...WITH THE THREAT MAINLY PERIODS OF BRIEF HEAVY RAIN AND SMALL HAIL. SOME HAIL COULD STILL APPROACH DAMAGING SIZE...AND DAMAGING WIND GUSTS ARE STILL POSSIBLE...BUT WILL BE ISOLATED CASES AND PROBABLY LATE NIGHT. COLD FRONT LIKELY TO STALL NR THE RRV OVERNIGHT THEN SURGE EWD TOMORROW AM AS H5 JET STREAK SWINGS INTO SERN ND. TSTM DEVELOPMENT REMAINS POSSIBLE THROUGHOUT THE DAY ON TUESDAY AS THE H5 TROF SWINGS OVHD. .FGF...NONE GUST Y
In the hours before
Special weather statement, Jul 24, 8:00 PM CDT, 3 hours 43 minutes before
NDZ006-007-014-015-024-026-028-054-250110- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 800 PM CDT MON JUL 24 2000 ...THE SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHEAST NORTH DAKOTA IS CANCELLED... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT FOR PORTIONS OF EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA... THE SEVERE THUNDERSTORM WATCH IS CANCELLED FOR THE AREA WEST OF A LINE FROM WALHALLA TO MICHIGAN AND COOPERSTOWN. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT EAST OF THIS AREA. MOIST AND VERY UNSTABLE AIR CONTINUES TO STREAM NORTHWARD INTO THE AREA...AHEAD OF A SURFACE COLD FRONT WHICH EXTENDS FROM SOUTHERN MANITOBA INTO EASTERN SOUTH DAKOTA. SEVERE THUNDERSTORMS CAN DEVELOP RAPIDLY THIS EVENING AND COULD PRODUCE HAIL TO 2 INCHES IN DIAMETER AND WIND GUSTS TO 70 MPH IN THE WATCH AREA. STAY ALERT TO CHANGING WEATHER CONDITIONS. IF SZEVERE THUNDERSTORMS DEVELOP IN YOUR AREA...OR A WARNING IS ISSUED FOR YOUR AREA...SEAK SHELTER IMMEDIATELY. GUST N
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 12:11 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 29 min |
| Jul 25, 12:35 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater | 30 min |
| Jul 25, 12:40 PM CDT | Severe Thunderstorm Warning | FGF | Mahnomen | 30 min |
| Jul 25, 1:17 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 28 min |
| Jul 25, 1:48 PM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 32 min |
| Jul 25, 2:37 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Otter Tail | 28 min |
| Jul 25, 3:04 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 31 min |
| Jul 25, 3:42 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 28 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2000Every severe thunderstorm warning in 2000
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.