Alert archive / Minnesota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 27, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at May 28, 2002, 6:40 PM CDT for Otter Tail County, Wilkin County, Minnesota. It was in force for 40 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 28, 2002, 6:40 PM CDT (23:40 UTC)
- Expired
- May 28, 2002, 7:20 PM CDT
- In force
- 40 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
Counties Otter Tail County, MN, Wilkin County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 157 km from the middle of the area, began a volume at 23:43 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 |
|---|---|---|---|
| May 28, 6:45 PM CDT | Hail 1 | Foxhome, MN | |
| May 28, 7:10 PM CDT | Hail 1 | Western, 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.7 hours before the alert went out and 221 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
- 5 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 1323 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 282340 SVRFAR MNC111-167-290030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 638 PM CDT TUE MAY 28 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA AND EAST CENTRAL WILKIN COUNTY IN WEST CENTRAL MINNESOTA. * UNTIL 720 PM CDT. * AT 631 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTH OF EVERDELL...OR ABOUT 10 MILES EAST OF WAHPETON...MOVEMENT WAS TO THE EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CARLISLE AT 655 PM AND ELIZABETH AT 705 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4633 9656 4621 9637 4609 9623 4645 9606 54 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 May 28, 2:50 PM CDT, 3 hours 50 minutes earlier.
Area forecast discussion, May 28, 2:50 PM CDT, 3 hours 50 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 250 PM CDT TUE MAY 28 2002 FORECAST CHALLENGE CONCERNS EARLY PCPN CHANCES AND TEMPERATURES. MODELS IN REASONABLE AGREEMENT WITH OVERALL PATTERN THROUGH PERIOD. IN THE EARLY GOING PREFERRED THE AVN SFC FEATURES HOWEVER AVN NOT PICKING UP VERY WELL ON SECONDARY SHORT WAVE DROPPING THROUGH SASKACHEWAN WHICH THE ETA COVERED SO WILL USE MIX FOR GRIDS. SCATTERED CONVECTION CONTINUES AHEAD SW-NE BOUNDARY OVER EASTERN ND INTO N CENTRAL MN. CU BAND HAS RECENTLY BEEN BACKBUILDING THROUGH SE ND ALONG THIS BOUNDARY. AM ALSO SEEING DEVELOPING CU FIELD LIKELY AS A RESULT OF OUTFLOW FROM CONVECTION FARTHER SOUTH FROM EXTREME SE ND INTO WEST CENTRAL MN. POSSIBILITY EXISTS FOR THESE BOUNDARIES TO INTERACT LATER THIS AFTERNOON AS THIS AREA HAS SEEN NEARLY FULL SOLAR ALL DAY. ALTHOUGH DEEP MOISTURE LACKING WITH CURRENT INSTABILITY AND EXPECTED CAPE AND APPROACHING SECONDARY WAVE OVER SOUTHEAST SASK FEEL ADDITIONAL DEVELOPMENT POSSIBLE. AS A RESULT WILL MAINTAIN CHC OF EVENING TSRA OVER ALL BUT FAR NW PTN.AFTER EVENING CHANCES OF TSRA FROM VALLY EAST WITH PASSAGE OF MID LEVEL WAVE SHORT WAVE RIDGE SHIFTS ACROSS FORECAST AREA. COLUMN SHOWING GOOD DRYING FROM WEST TO EAST. 850MB THERMAL RIDGE REMAINS TO OUR WEST SO WITH WARM ADVECTION CONTINUING EXPECT MILD MINIMUM TEMPERATURES. MORE POTENT WAVE TO AFFECT FORECAST AREA MAINLY DURING AFTERNOON EVENING HOURS. NOSE OF UPPER JET REACHES MAINLY NORTHERN FA LATE IN DAY. ASSOCIATED SURFACE BOUNDARY ALSO MORE WELL DEFINED. PRECIPITBLE WATER IN EXCESS OF AN INCH AND WITH OTHER CONVECTIVE PARAMETERS WILL SEE SIMILAR RESULTS AS TODAY. THERMAL RIDGE SHIFTS OVER FORECAST AREA AND CLOUDS WILL HAVE A SIGNIFICANT AFFECT ON TEMPERATURES. WILL STAY CONSISTENT AND LEAN TOWARDS WARMER FWC/ETA GUIDANCE. TROUGH PUSHES EAST OVERNIGHT AND WILL MAINTAIN EVENING MENTION OF TSRA. NO REAL COOLING SO MILD TEMPS AGAIN OVERNIGHT. REMAINDER OF WORK WEEK LOOKS RELATIVELY RAINFREE AS COLUMN DRIES AND SFC HIGH WORKS EAST. SLIGHT COOLING IN THE LOWER LEVELS SHOULD RESULT IN TEMPERATURES MORE TOWARDS SEASONAL AVERAGES FRIDAY. .EXTENDED... UTILIZED 12Z AVN THRU 168HRS AS BASIS OF FCST. WEAK HIGH PRESSURE WILL BE OVER EXITING AREA ON SATURDAY...AHEAD OF NEXT SYSTEM WHICH APPEARS WILL ARRIVE A BIT FASTER THAN EARLIER THINKING IN FAST WESTERLY FLOW. WILL INTRODUCE CHC SHRA ON SUNDAY AND CONTINUE IT INTO MONDAY. MRF AND AVN TIMING OFF SOMEWHAT...WITH MRF SHOWING NEXT SYSTEM FAST ON HITS HEELS ON TUESDAY WHILE AVN SLOWER AND LESS AMPLIFIED. ATTM WILL LEAVE TUESDAY AS JUST MOSTLY CLOUDY. 85H TEMPS SUGGEST NEAR NORMAL TEMPERATURES AND THIS COVERED WELL IN PREV EXTENDED. .FGF...NONE. VOELKER/RIDDLE
In the hours before
Local storm report, May 28, 6:28 PM CDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
628 PM CDT TUE MAY 28 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0450 PM 1 W SABIN MN .88 INCH HAIL
05/28/02 CLAYThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 3:35 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 25 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2002Every severe thunderstorm warning in 2002
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.