Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 159, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 31, 2000, 7:19 PM CDT for Lake of the Woods County, Minnesota. It was in force for 31 min. 2 reports 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 31, 2000, 7:19 PM CDT (00:19 UTC)
- Expired
- Jul 31, 2000, 7:50 PM CDT
- In force
- 31 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Lake of the Woods County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 234 km from the middle of the area, began a volume at 00:23 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 31, 7:20 PM CDT | Hail 0.75 | Williams, MN | |
| Jul 31, 7:40 PM CDT | Hail 0.75 | Williams, 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 00:00Z, 0.3 hours before the alert went out and 121 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
- 285 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 2127 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 010020 SVRFAR MNC077-010050- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 719 PM CDT MON JUL 31 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA... * UNTIL 750 PM CDT * AT 717 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES WEST OF WHEELERS POINT...OR ABOUT 38 MILES EAST OF ROSEAU...MOVEMENT WAS TO THE EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LUDE AT 725 PM CDT... WHEELERS POINT AT 745 PM CDT... REMEMBER SEVERE THUNDERSTORMS CANs AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4889 9512 4877 9493 4877 9454 4899 9470 NNNN
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 31, 3:00 PM CDT, 4 hours 19 minutes earlier.
Area forecast discussion, Jul 31, 3:00 PM CDT, 4 hours 19 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 300 PM CDT MON JUL 31 2000 FORECAST PROBLEM FOR TONIGHT IS PCPN. LATEST VIS SATELLITE IMAGERY SHOWS PLENTY OF CONVECTIVE DEBRIS OVER MAJORITY OF CWFA WITH SOME CLEARING OCCURRING IN N PART OF CWFA. KMVX HAS SOME SHRA AND TSRA BASICALLY IN S AND EXTREME E PARTS OF CWFA. LATEST MSAS SFC PRESSURE ANALYSIS HAS LOW CENTERED BETWEEN BIS AND JMS WITH A FRONTAL BOUNDARY EXTENDING ALONG A JMS-GFK-HCO LINE. WHEN COMPARING CURRENT MSAS SFC PLOT TO MODELS...ETA AND AVN BOTH CLOSE. MODELS MOVE SFC LOW SE THROUGH SE ND INTO CENTRAL MN BY 12Z TUE...PULLING A COLD FRONT ALONG WITH IT. WITH PLENTY OF HEATING NOW OCCURRING IN AREA OF -7 TO -10 LI'S IN NORTHERN ND...UPPER LEVEL SHORTWAVE APPROACHING... AND GOOD SFC MOISTURE CONVERGENCE IN POOLING ALONG AND BEHIND SFC LOW AND FRONTAL AXIS...EXPECT TSRA TO GET GOING IN MOT TO DVL AREA (AS THE CAP HAS DISSIPATED IN THIS AREA)...AND MAKE THEIR WAY E-SE THROUGH CWFA OVERNIGHT...AND STILL HAVE POTENTIAL FOR SOME SVR. FORECAST PROBLEM FOR SECOND THROUGH FOURTH PERIODS IS TEMPS. SFC HIGH PRESSURE BUILDS IN AND WILL PROVIDE A RETURN TO MORE NORMAL TEMPS FOR TUE AND WED...AS COOLER NORTHERLY FLOW WILL DOMINATE. EXTENDED...MEDIUM RANGE MODELS STILL STICKING TO THEIR GUNS WITH POSITIVE PNA (WESTERN RIDGE EASTERN TROUGH) 5H LONGWAVE CONFIGURATION PATTERN ACROSS CONUS THROUGH PERIOD. PERIODIC PIECES OF SHORTWAVE ENERGY EJECTING FROM SEMI-PERMANENT TROUGH OFF PACIFIC NORTHWEST/BC COAST SHOULD RIDE DOWN THE BACKSIDE OF AFOREMENTIONED RIDGE INTO NORTHERN PLAINS. STILL APPEARS BEST CONVECTIVE SHOT SLATED FOR FRI-SAT TIME-FRAME THUS...WILL NOT DEVIATE FROM CURRENT CONTINUITY. NEAR SEASONABLE TEMPERATURES EARLY IN PERIOD SHOULD GIVE WAY TO COOLING TREND NEXT WEEKEND AS FLOW DEEPENS FROM THE NORTHWEST ON BACKSIDE OF ONTARIO PROVINCE/NORTHERN GREAT LAKES TROUGH. .FGF...NONE. NG/BERG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 8:02 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 43 min |
| Jul 31, 8:44 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 31 min |
| Jul 31, 9:02 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wilkin | 28 min |
| Jul 31, 9:08 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 32 min |
| Jul 31, 9:32 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 43 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.