Alert archive / Minnesota / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 49, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 5, 2010, 6:14 PM CDT for Mahnomen County, Norman County, Polk County, Minnesota. It was in force for 25 min. 1 report 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
- Jun 5, 2010, 6:14 PM CDT (23:14 UTC)
- Expired
- Jun 5, 2010, 6:39 PM CDT
- In force
- 25 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Mahnomen County, MN, Norman County, MN, Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 110 km from the middle of the area, began a volume at 23:14 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 |
|---|---|---|---|
| Jun 5, 6:20 PM CDT | HAIL 1 | 2 E Rindal, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.
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
International Fa, MN (KINL), launched 12:00Z, 11.2 hours before the alert went out and 231 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 649 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
901 WUUS53 KFGF 052314 SVRFGF MNC087-107-119-060000- /O.NEW.KFGF.SV.W.0049.100605T2314Z-100606T0000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 614 PM CDT SAT JUN 5 2010 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MAHNOMEN COUNTY IN NORTHWEST MINNESOTA... NORTHEASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA... SOUTH CENTRAL POLK COUNTY IN NORTHWEST MINNESOTA... * UNTIL 700 PM CDT * AT 609 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE STORM WAS LOCATED 3 MILES NORTH OF RINDAL...OR 40 MILES SOUTH OF THIEF RIVER FALLS...MOVING TO THE SOUTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WINGER AROUND 620 PM CDT. BEJOU AROUND 630 PM CDT. MAHNOMEN AROUND 640 PM CDT. BEAULIEU AROUND 650 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. && LAT...LON 4737 9556 4717 9583 4750 9630 4764 9613 TIME...MOT...LOC 2314Z 314DEG 27KT 4751 9610 WIND...HAIL <50MPH 1.00IN $$ EWENS
1 follow-up statement
607 WWUS53 KFGF 052339 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 639 PM CDT SAT JUN 5 2010 MNC087-107-119-052350- /O.CAN.KFGF.SV.W.0049.000000T0000Z-100606T0000Z/ NORMAN MN-MAHNOMEN MN-POLK MN- 639 PM CDT SAT JUN 5 2010 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL POLK...MAHNOMEN AND NORTHEASTERN NORMAN COUNTIES IN NORTHWEST MINNESOTA IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4737 9556 4717 9583 4750 9630 4764 9613 TIME...MOT...LOC 2340Z 314DEG 27KT 4737 9589 $$ EWENS
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 Jun 5, 2:22 PM CDT, 3 hours 52 minutes earlier.
Area forecast discussion, Jun 5, 2:22 PM CDT, 3 hours 52 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 222 PM CDT SAT JUN 5 2010 .SHORT TERM... PERSISTENT CHANCES FOR SHOWERS AND TSTMS CONTINUE TO BE THE MAIN FORECAST CHALLENGES THROUGHOUT THIS PORTION OF THE FORECAST. HARD TO EVEN FIND A SMALL TIME BLOCK TO GO DRY. WILL CONTINUE TO FOLLOW A MODEL BLEND FOR THE TONIGHT THRU TUE FORECAST. TONIGHT...FIRST BATCH OF LIGHT SHOWERS IS CURRENTLY MOVING OUT OF WEST CENTRAL MN. IN THE WAKE OF THIS PCPN BAND...THICK CLOUDS HAVE HELD TEMPS IN THE LOW 60S. ELSEWHERE THERE HAS BEEN SOME THINNING OF CLOUDS AND TEMPS HAVE RECOVERED INTO THE UPPER 60S AND LOW 70S. WITH THE COLD POOL ALOFT AND THE ONGOING SFC HEATING ARE STARTING TO SEE THE RADAR LIGHT UP WITH SPORADIC SHOWERS/ISOLATED TSTMS. THESE WILL HAVE TO BE MONITORED THROUGHOUT THE LATE AFTERNOON AND EVENING. MOST OF THE TSTMS SHOULD BE WEAK BUT THERE COULD BE AN ISOLATED TSTM THAT COULD BE STRONG. CONVECTIVE PARAMETERS ARE GENERALLY WEAK. AFTERNOON MIXING SHOWS SFC DEW POINTS QUITE A BIT LOWER THAN AT SUNRISE...RANGING FROM THE MID 40S TO LOW 50S. PRECIPITABLE WATER VALUES ALSO DROPPING FROM HIGHER OVERNIGHT VALUES TO 0.8 TO 0.9 INCHES. HAVE POPPED QUITE A BIT OF THICK CUMULUS WHICH IS LIMITING THE SFC HEATING TOO. AS OF MID AFTERNOON ARE LOOKING AT SFC BASED CAPE VALUES OF 500-1000 J/KG ALONG/WEST OF THE RED RIVER VALLEY. NOT MUCH SFC FOCUS BUT NICE UPPER JET CONTINUES TO PUSH THRU SOUTH DAKOTA PROVIDING SOME LIFT INTO OUR FA. BULK SHEAR VALUES GET BETTER CLOSER TO THE SD BORDER AND MUCH WEAKER ALONG THE CANADIAN BORDER. ALL PARAMETERS SHOULD WEAKEN AFTER SUNSET ALTHOUGH MODELS WANT TO LINGER SOME WEAK SHOWERS PAST MIDNIGHT. SUN-TUE...FAIRLY ZONAL 500MB FLOW WILL BEGIN TO AMPLIFY A BIT LATE TONIGHT AND INTO SUNDAY. UPPER JET REMAINS OVER THE NORTHERN PLAINS AIDING IN LARGE SCALE LIFT. EXPECTING A SIMILAR TYPE OF DAY AGAIN SUNDAY AFTERNOON WITH LOTS OF POPCORN SHOWERS/ISOLATED THUNDER WITH SOME HEATING...FADING OUT AGAIN DURING THE EVENING. WEAK RIDGE CRESTS OVER THE AREA BY MON MORNING WITH 850MB FLOW FINALLY TURNING BACK TO THE SOUTH OVER THE WESTERN DAKOTAS. THIS SHOULD FINALLY START PUSHING MORE MOISTURE/INSTABILITY BACK INTO THE HIGH PLAINS. AS THE FLOW BECOMES ZONAL AGAIN ON MONDAY IT WILL START TO PUSH A SFC FRONT INTO THE CENTRAL DAKOTAS. THIS FRONT WILL PUSH ACROSS THE FA MON NIGHT INTO EARLY TUE...ALTHOUGH TIMING STILL IN QUESTION THIS FAR OUT. ALL SAID...PERIOD CONTINUES TO LOOK ACTIVE WITH LOTS OF PCPN CHANCES. TEMPS STILL LOOK TO REMAIN SLIGHTLY BELOW NORMAL. .LONG TERM [WED-SAT]... AN UNSETTLED PERIOD IS EXPECTED FOR THE EXTENDED FORECAST PERIOD AS THE ZONAL PATTERN BREAKS DOWN AND A SIGNIFICANT UPPER TROUGH SETTLES INTO THE PACIFIC NORTHWEST FOR THE LATTER HALF OF NEXT WEEK. WENT WITH A GFS/ECMWF BLEND FOR DETAILS. SOUTHWESTERLY FLOW ALOFT WILL ALLOW A SERIES OF SHORTWAVES TO BE EJECTED INTO THE NORTHERN PLAINS. TIMING OF INDIVIDUAL PRECIPITATION EVENTS IS STILL VERY DIFFICULT AND GENERAL CHANCE PROBABILITIES REMAIN TO BLEND WITH THE NEIGHBORS. TEMPERATURES DURING THE EXTENDED PERIOD REMAIN PROBLEMATIC AS MORE EXTENSIVE CLOUD COVER...TIMING OF RAINFALL EVENTS...AND A QUASI-STATIONARY SURFACE BOUNDARY SHOULD SET UP SOMEWHERE IN THE NORTHERN PLAINS. AT THE PRESENT TIME...EXPECT THE NORTHERN FA TO REMAIN SLIGHTLY COOLER THAN SEASONAL NORMALS WITH THE SOUTHERN AREAS CLOSER TO AVERAGE JUNE TEMPERATURES. && .AVIATION... VFR CONDITIONS ARE ANTICIPATED FOR MOST AREAS THROUGH 18Z SUNDAY. AN ISOLATED THUNDERSTORM MAY BRING TEMPORARY MVFR CONDITIONS FOR A BRIEF PERIOD LATE THIS AFTERNOON OR EARLY EVENING. NORTHWESTERLY SURFACE WINDS WILL REMAIN GENERALLY 6 KNOTS OR LESS AFTER SUNSET. KDVL SHOULD BEGIN TO SEE BREAKS IN THE CLOUD COVER BY MID TO LATE MORNING SUNDAY. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && GODON/BRAMER/WJB
Hazardous weather outlook, Jun 5, 7:00 AM CDT, 11 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 700 AM CDT SAT JUN 5 2010 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-061200- WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS- WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE- EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN- SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER- PEMBINA-BENSON-RAMSEY-EASTERN WALSH COUNTY-EDDY-NELSON- GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT- RICHLAND-WESTERN WALSH COUNTY- 700 AM CDT SAT JUN 5 2010 ...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT ISOLATED SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING OVER ALL OF EASTERN NORTH DAKOTA AND NORTHWEST AND WEST CENTRAL MINNESOTA. THE STORMS CAN BE EXPECTED AFTER 4 PM AND SHOULD DIMINISH AFTER 9 PM CDT. THE STORMS WILL MOST LIKELY PRODUCE SOME LARGE HAIL. AN UPPER LEVEL JET WILL MOVE SOUTH DAKOTA TODAY. COLD AIR ALOFT WILL MOVE OVER MOIST AIR AT LOW LEVELS AND CREATE INSTABILITY. THUNDERSTORMS ARE EXPECTED TO BE DIURNALLY DRIVEN. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED SUNDAY. THE STORMS ARE NOT EXPECTED TO BECOME SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED. HOPPES
In the hours before
Special weather statement, Jun 5, 4:31 PM CDT, 1 hour 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 431 PM CDT SAT JUN 5 2010 MNZ001-007-013-014-052215- PENNINGTON MN-RED LAKE MN-WEST MARSHALL MN-WEST POLK MN- 431 PM CDT SAT JUN 5 2010 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN POLK...EXTREME SOUTHWESTERN MARSHALL...SOUTHWESTERN PENNINGTON AND WESTERN RED LAKE COUNTIES UNTIL 515 PM CDT... AT 427 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM 11 MILES SOUTHWEST OF WARREN...OR 13 MILES NORTHEAST OF GRAND FORKS...MOVING TO THE SOUTHEAST AT 25 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THE STORM. THE STORM WILL BE NEAR... SHERACK AND ANGUS AROUND 450 PM CDT. KEY WEST AROUND 455 PM CDT. EUCLID AROUND 505 PM CDT. RED LAKE FALLS...WYLIE AND HUOT AROUND 515 PM CDT. BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. EWENS
Local storm report, Jun 5, 5:04 PM CDT, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
504 PM CDT SAT JUN 05 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0455 PM HAIL 2 NNW KEY WEST 47.96N 96.80W
06/05/2010 E1.00 INCH POLK MN PUBLIC
0500 PM HAIL 1 E KEY WEST 47.93N 96.76W
06/05/2010 E1.00 INCH POLK MN TRAINED SPOTTER
&&
MEWENSLocal storm report, Jun 5, 5:40 PM CDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
540 PM CDT SAT JUN 05 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0532 PM HAIL 6 SE OSLO 48.13N 97.04W
06/05/2010 E1.00 INCH POLK MN PUBLIC
&&
MEWENSThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 4:50 PM CDT | Severe Thunderstorm Warning | FGF | Polk, Red Lake | 40 min |
| Jun 5, 5:24 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 45 min |
| Jun 5, 6:59 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Polk | 30 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.