Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 135, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 14, 2003, 5:46 PM CDT for Polk County, Minnesota. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2003, 5:46 PM CDT (22:46 UTC)
- Expired
- Jul 14, 2003, 6:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 70 km from the middle of the area, began a volume at 22:45 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.
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 14, 2:35 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 10.8 hours before the alert went out and 258 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
- 93 J/kg
- Mixed-layer CIN
- -353 J/kg
- Mixed-layer LCL
- 1491 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
992 WUUS53 KFGF 142246 SVRFGF MNC119-142330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 546 PM CDT MON JUL 14 2003 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA. * UNTIL 630 PM CDT. * AT 540 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 22 MILES WEST OF THIEF RIVER FALLS TO 11 MILES NORTHEAST OF GRAND FORKS...MOVEMENT WAS TO THE EAST AT 35 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... KEY WEST AT 550 PM AND EUCLID AT 555 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4816 9659 4796 9703 4775 9670 4791 9650 $$ 8
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 14, 3:30 PM CDT, 2 hours 16 minutes earlier.
Area forecast discussion, Jul 14, 3:30 PM CDT, 2 hours 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 330 PM CDT MON JUL 14 2003 DEVELOPING THUNDERSTORMS NOW ARRIVING INTO NORTHEAST ND HAVE HAD SOME SEVERE EVENTS ALREADY. ETA SHOWS THE RELATED THETA-E RIDGE... SURFACE TROUGH AND STRONG VORTICITY LOBE WILL SWEEP SOUTHWARD AND ACROSS MUCH OF THE AREA. DRY LOW LEVEL ADVECTION IN SOUTHWEST FLOW MAY ARRIVE IN TIME TO KEEP STORMS FROM BECOMING SEVERE FOR SOUTHEAST ND AND WESTCENTRAL MN SO NO TORNADO WATCH EXTENDING AS FAR SOUTH AS FAR/FFM. BUT EXPECT MUCH OF THE AREA TO HAVE SOME SEVERE STORMS INTO EARLY EVENING. THUNDERSTORM POTENTIAL AGAIN LOOKS STRONG ON WED WITH SURFACE LOW OVER WESTERN SD AND NOSE OF LOW LEVEL JET SOUTH OF FAR. LOW LEVEL CONVERGENT BOUNDARY LOOKS TO BE NEAR FAR AND GFS SHOWS STRONG UPPER DIVERGENCE. LIFTED INDEXES REACH -6C BY 18Z BUT FALL OFF LATER WHILE GFS REACHES -5C NEAR DVL LATE. FIGURE BEST CHANCE OF THUNDER IS SOUTH PORTION ASSOCIATED WITH THE POTENTIAL JET COUPLET AND WILL PLACE HIGHEST POPS THERE (WHERE WE ALREADY SHOW CHANCE PROBABILITY). 12Z GFS RETURNED TO ITS 00Z SOLUTION REGARDING A DEVELOPING MCS ON ND/CANADIAN BORDER THU NIGHT WITH ALMOST IDENTICAL QPF...POSITION AND TIMING. ETA DOESN/T DEVELOP IT OR ASSOCIATED UPPER JET DIVERGENCE NEARLY AS MUCH THOUGH WOULD TRUST GFS ON THIS ISSUE MORE. EXTENDED...FRI-SUN DRY AS HOT RIDGE OVER LOWER CENTRAL/WESTERN U.S. IS EXPECTED TO HAVE BUILT ENOUGH TO SHOVE UPPER JET WELL INTO CANADA. HOWEVER...THE TROUGH THE 12Z GFS SHOWS AT 120 HOURS (SAT 12Z) READY TO SWEEP SOUTHEAST OVER AREA LOOKS OMINOUS. THINK THE TROUGH WILL DIG A LITTLE FARTHER EASTWARD AT THAT TIME. .FGF...TORNADO WATCH #744 UNTIL 8PM CDT FOR NORTHEAST ND AND NORTHWEST MN. GV
Hazardous weather outlook, Jul 14, 6:31 AM CDT, 11 hours 15 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-141430- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 631 AM CDT MON JUL 14 2003 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA TODAY AND INTO EARLY EVENING. THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT SCATTERED SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS EXTREME EASTERN NORTH DAKOTA THIS MORNING AND MAINLY OVER NORTHWEST AND WEST CENTRAL MINNESOTA THIS AFTERNOON AND EARLY EVENING. THE PRIMARY THREAT WILL BE LARGE HAIL AND DAMAGING WINDS. AN AREA OF LOW PRESSURE OVER THE CENTRAL DAKOTAS WILL PUSH EAST ACROSS THE REGION TODAY EXITING EASTERN AREAS EARLY THIS EVENING. WARM...MOIST AND UNSTABLE AIR AHEAD OF THIS AREA OF LOW PRESSURE WILL INTERACT WITH AN UPPER LEVEL DISTURBANCE TO PRODUCE THESE STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THUNDERSTORMS ARE AGAIN EXPECTED ACROSS MAINLY SOUTHERN AREAS WEDNESDAY NIGHT WITH CHANCES CONTINUING ACROSS THE ENTIRE AREA THURSDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TODAY INTO EARLY EVENING. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT HTTP://WWW.CRH.NOAA.GOV/FGF/INDEX.HTML (ALL LOWER CASE) VOELKER
In the hours before
Local storm report, Jul 14, 3:52 PM CDT, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
352 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0330 PM PEMBINA ND 1.75 INCH HAIL
07/14/03 PEMBINALocal storm report, Jul 14, 4:14 PM CDT, 1 hour 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
414 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0400 PM LANCASTER MN .75 INCH HAIL
07/14/03 KITTSONLocal storm report, Jul 14, 4:37 PM CDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
437 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0420 PM 5 N DEVILS LAKE ND .75 INCH HAIL
07/14/03 RAMSEY
JHLocal storm report, Jul 14, 4:52 PM CDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
452 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0445 PM 14 NE STEPHEN MN .75 INCH HAIL
07/14/03 MARSHALL
JHLocal storm report, Jul 14, 4:58 PM CDT, 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
458 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0450 PM CLEMENTSON MN .75 INCH HAIL
07/14/03 LAKE OF THE WOODS
JHLocal storm report, Jul 14, 5:13 PM CDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
513 PM CDT MON JUL 14 2003
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0423 PM 11 E LANGDON ND TORNADO
07/14/03 CAVALIER BRIEF TOUCHDOWN. REPORTED
BY LAW ENFORCEMENT.
0445 PM 6 NW STRANDQUIST MN .75 INCH HAIL
07/14/03 MARSHALL
JHThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 10:18 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 57 min |
| Jul 14, 2:54 PM CDT | Tornado Warning | FGF | Kittson | 66 min |
| Jul 14, 3:04 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 41 min |
| Jul 14, 4:00 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 45 min |
| Jul 14, 4:05 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods, Roseau | 40 min |
| Jul 14, 4:41 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 49 min |
| Jul 14, 4:48 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods | 42 min |
| Jul 14, 5:58 PM CDT | Tornado Warning | FGF | Polk | 47 min |
| Jul 14, 6:00 PM CDT | Severe Thunderstorm Warning | FGF | Red Lake | 45 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2003Every severe thunderstorm warning in 2003
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.