Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 137, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 8, 2000, 8:10 PM CDT for Otter Tail County, Minnesota. It was in force for 30 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 8, 2000, 8:10 PM CDT (01:10 UTC)
- Expired
- Jul 8, 2000, 8:40 PM CDT
- In force
- 30 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 169 km from the middle of the area, began a volume at 01:13 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 8, 8:20 PM CDT | Hail 1 | Perham, 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 |
|---|---|---|---|
| Jul 8, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.2 hours before the alert went out and 248 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
- 3971 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1312 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 17.7
The text
As transmitted, in the capitals the NWS used until 2016.
871 WUUS53 KFGF 090110 SVRFAR MNC111-090140- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 810 PM CDT SAT JUL 8 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA * UNTIL 840 PM CDT * AT 808 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES WEST OF PERHAM...OR ABOUT 18 MILES SOUTHEAST OF DETROIT LAKES...MOVEMENT WAS TO THE EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BUTLER AT 835 PM CDT... HILLVIEW AT 840 PM CDT... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING FOR WEST CENTRAL MINNESOTA. LAT...LON 4669 9576 4651 9572 4655 9518 4669 9521 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 8, 2:20 PM CDT, 5 hours 50 minutes earlier.
Area forecast discussion, Jul 8, 2:20 PM CDT, 5 hours 50 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 220 PM CDT SAT JUL 8 2000 ...FORECAST CONCERN IS FLASH FLOOD POTNETIAL IN SRN CWFA TONIGHT... .SHORT TERM... STNRY FNT ALG THE SD BORDER INTO WC MN WILL CONT TO BE THE FOCUS FOR CONCERN TNGT AS SHRTWV TRACKS ACRS CANADIAN BORDER. MSTR POOLING ALG THE FNT IS IMPRESSIVE WITH LOWER 70S DWPNTS. PWATS CLOSE TO 1.75 INCH AT FFM AND TOTALS NEAR 60. WILL ISSUE A FLASH FLOOD WATCH TNGT FOR XTRM SERN CWFA. ALTHOUGH HEAVIEST RNFL SHOULD STAY E OF CWFA OUR FFG IS SO LOW THAT RCHG IT WOULD BE EASY. HV MAINLY USED ETA FOR GUIDANCE ON THIS FCST CYCLE. ETA 850MB WND SUGGESTS TSTMS SHOULD DVLP MAINLY ALG SERN CWFA THEN MOV INTO ERN MN. FOR THE REST OF THE CWFA WILL END WDLY SCT TSTMS THIS EVENING WITH DIURNAL CYCLE. .LONGER TERM... CENTRAL CANADIAN SHRTWV DROPS INTO MEAN TROF POSITION OVER EASTERN US ON SUNDAY. THIS WILL ALLOW POLAR HIGH PRES TO BLD INTO THE NRN PLAINS AND END THE RECENT RAINY PATTERN. WILL TAKE OUT MENTION OF TSTMS 2ND THRU 4TH PD AS MORE STABLE AND DRIER ENVIRONMENT TAKES OVER. TEMPS SHOULD BE NEAR AVE WITH CWFA IN COOL SECTOR AS SFC WRMFNT PUSHES INTO SRN MN. .EXTENDED... LATEST MRF AND CANADIAN ARE CONSISTANT WITH PREVIOUS FORECAST. NORTHERN PLAINS REMAINS ON NORTHERN PERIPHERY OF CENTRAL US RIDGE. THUS THE CWA WILL CONTINUE TO BE IN THE RING OF FIRE WITH PERIODIC CHANCES FOR THUNDERSTORMS. MOST DIFFICULT THING WILL BE TIMING OF SHORTWAVES. APPEARS CHANCE FOR THUNDERSTORMS A GOOD BET TUESDAY/WEDNESDAY AND AGAIN FRIDAY. PREVIOUS FORECAST HAS THIS WELL IN HAND...THUS NO MAJOR CHANGES PLANNED. COORD WITH DLH MPX. .FGF...FLASH FLOOD WATCH TNGT SRN 1/4 OF CWFA OR MN029>032-040 ND0049-052>053. BRAZZELL/BELLES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 8:41 PM CDT | Tornado Warning | FGF | Otter Tail | 29 min |
| Jul 8, 8:44 PM CDT | Severe Thunderstorm Warning | FGF | Wadena | 31 min |
| Jul 8, 9:12 PM CDT | Tornado Warning | FGF | Otter Tail | 18 min |
| Jul 8, 9:16 PM CDT | Tornado Warning | FGF | Wadena | 29 min |
| Jul 8, 9:49 PM CDT | Flash Flood Warning | FGF | Otter Tail, Wadena | 4 hr |
| Jul 8, 10:25 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 30 min |
| Jul 8, 10:53 PM CDT | Severe Thunderstorm Warning | FGF | Otter Tail | 47 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.