Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 86, NWS Grand Forks, ND

August 25, 20135 counties in Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 25, 2013, 4:26 AM CDT for 5 counties in Minnesota. It was in force for 64 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: Aug 25, 2013, 4:26 AM CDT (09:26 UTC)
Expired: Aug 25, 2013, 5:30 AM CDT
In force: 64 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Becker County, MN, Clay County, MN, Clearwater County, MN, Mahnomen County, MN, Norman County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 132 km from the middle of the area, began a volume at 09:29 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
Aug 25, 4:55 AM CDT	HAIL 1	1 E Callaway, MN	ESTIMATED HAIL OF AT LEAST QUARTER SIZE. SEVERAL BRANCHES DOWN.

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 29 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 00:00Z, 9.4 hours before the alert went out and 246 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2085 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1272 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 9.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

227 
WUUS53 KFGF 250926
SVRFGF
MNC005-027-029-087-107-251030-
/O.NEW.KFGF.SV.W.0086.130825T0926Z-130825T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
426 AM CDT SUN AUG 25 2013

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BECKER COUNTY IN NORTHWEST MINNESOTA...
  EASTERN CLAY COUNTY IN NORTHWEST MINNESOTA...
  SOUTHERN CLEARWATER COUNTY IN NORTHWEST MINNESOTA...
  SOUTHERN MAHNOMEN COUNTY IN NORTHWEST MINNESOTA...
  SOUTHEASTERN NORMAN COUNTY IN NORTHWEST MINNESOTA...

* UNTIL 530 AM CDT

* AT 425 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES NORTHWEST
  OF LAKE PARK...AND MOVING EAST AT 55 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE PARK AND FAITH AROUND 435 AM CDT.
  CALLAWAY AND AUDUBON AROUND 440 AM CDT.
  RICHWOOD AND WESTBURY AROUND 445 AM CDT.
  ROCHERT AND FRAZEE AROUND 455 AM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE OGEMA...WHITE EARTH...HEIGHT
OF LAND LAKE...TOAD LAKE...PONSFORD AND OSAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4728 9521 4671 9519 4674 9655 4729 9641
TIME...MOT...LOC 0926Z 269DEG 46KT 4696 9622

HAIL...1.00IN
WIND...60MPH

$$

JR

2 follow-up statements

561 
WWUS53 KFGF 250946
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
446 AM CDT SUN AUG 25 2013

MNC027-107-250956-
/O.CAN.KFGF.SV.W.0086.000000T0000Z-130825T1030Z/
NORMAN MN-CLAY MN-
446 AM CDT SUN AUG 25 2013

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CLAY AND SOUTHEASTERN
NORMAN COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4673 9618 4698 9617 4698 9619 4715 9620
      4715 9607 4729 9606 4728 9521 4672 9519
TIME...MOT...LOC 0946Z 266DEG 34KT 4700 9592

$$

MNC005-029-087-251030-
/O.CON.KFGF.SV.W.0086.000000T0000Z-130825T1030Z/
MAHNOMEN MN-BECKER MN-CLEARWATER MN-
446 AM CDT SUN AUG 25 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
CLEARWATER...BECKER AND SOUTHERN MAHNOMEN COUNTIES UNTIL 530 AM
CDT...

AT 443 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CALLAWAY...AND
MOVING EAST AT 40 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  RICHWOOD AROUND 455 AM CDT.
  ROCHERT AND FRAZEE AROUND 500 AM CDT.
  HEIGHT OF LAND LAKE AND TULABY LAKE AROUND 510 AM CDT.
  MANY POINT LAKE AND TOAD LAKE AROUND 515 AM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE NAYTAHWAUSH...SNELLMAN...
PONSFORD AND TWO INLETS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4673 9618 4698 9617 4698 9619 4715 9620
      4715 9607 4729 9606 4728 9521 4672 9519
TIME...MOT...LOC 0946Z 266DEG 34KT 4700 9592

HAIL...1.00IN
WIND...60MPH

$$

JR

906 
WWUS53 KFGF 251008
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
508 AM CDT SUN AUG 25 2013

MNC005-029-087-251030-
/O.CON.KFGF.SV.W.0086.000000T0000Z-130825T1030Z/
MAHNOMEN MN-BECKER MN-CLEARWATER MN-
508 AM CDT SUN AUG 25 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
CLEARWATER...EASTERN BECKER AND SOUTHEASTERN MAHNOMEN COUNTIES UNTIL
530 AM CDT...

AT 506 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MANY POINT
LAKE...AND MOVING EAST AT 50 MPH.

HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BAD MEDICINE LAKE AND PONSFORD AROUND 515 AM CDT.
  OSAGE AND MIDWAY AROUND 520 AM CDT.
  TWO INLETS AND LAKE ITASCA AROUND 525 AM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE LONG LOST LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4674 9577 4714 9582 4728 9521 4672 9519
TIME...MOT...LOC 1008Z 261DEG 42KT 4705 9550

HAIL...1.00IN
WIND...60MPH

$$

JR

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 Aug 25, 3:59 AM CDT, 27 minutes earlier.

Area forecast discussion, Aug 25, 3:59 AM CDT, 27 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND FORKS ND
359 AM CDT SUN AUG 25 2013

.SHORT TERM...(TODAY THROUGH MONDAY)
ISSUED AT 359 AM CDT SUN AUG 25 2013

UPPER LEVEL RIDGE WAS CENTERED OVER KS WITH A SERIES OF UPPER LEVEL
DISTURBANCES WILL ROTATE AROUND THE PERIPHERY OF THE UPPER LEVEL RIDGE
AND OVER THE FORECAST AREA THIS PERIOD. ALSO AN UPPER LEVEL TROUGH
OFF THE CA COAST WILL MOVE ACROSS SOUTHERN MAN MON NIGHT.

AREA RADARS INDICATED BROKEN LINE OF THUNDERSTORMS FROM SOUTH
CENTRAL ND TO TRAILL COUNTY ND. STORM WERE MOVING TO THE NORTHEAST
35-40 KNOTS. WATER VAPOR LOOP INDICATED A SHORT WAVE OVER CO. SHORT
WAVE FORECAST TO MOVE ACROSS THE SOUTHERN RED RIVER VALLEY LATE THIS
AFTERNOON AND EVENING. ALSO WATER VAPOR INDICATED ANOTHER SHORT WAVE
OVER NORTHEAST NV ALSO FORECAST TO MOVE ACROSS THE FORECAST AREA
TONIGHT.

PRECIPITABLE WATER AROUND AN INCH AND THREE QUARTER WILL
SHIFT SOUTHEAST TODAY AND TONIGHT THEN MOISTURE WILL RETURN BACK
NORTH ON MON. LOW LEVEL CONVERGENT FLOW WITH 700 THETA-E GRADIENT
OVER THE FORECAST AREA TODAY. WILL INCREASE THREAT OF THUNDERSTORMS
FOR TODAY MAINLY SOUTH HALF.

TWEAKED POPS FOR THE REST OF THE PERIOD.

.LONG TERM...(MONDAY NIGHT THROUGH SATURDAY)
ISSUED AT 359 AM CDT SUN AUG 25 2013

(WEDNESDAY-SATURDAY)...

HIGH HEIGHTS WILL CONTINUE AS UPPER RIDGING REMAINS OVER THE PLAINS.
THE DAY ON WEDNESDAY SHOULD BE PRETTY CAPPED TO ANY PRECIP EVEN WITH
WEAK SFC LOW PRESSURE NEARBY...HOWEVER THE GEM AND ECMWF AT LEAST
HAVE SOME SIGNS OF A BOUNDARY IN THE WESTERN COUNTIES WEDNESDAY
NIGHT AND CONTINUING INTO THURSDAY SO KEPT POPS AROUND 30-40
PERCENT.  MODELS ALL SHOW A WEAK SHORTWAVE MOVING OVER THE TOP OF
THE RIDGE THROUGH CANADA FRIDAY OR SATURDAY...WITH SOME DIFFERENCES
IN TIMING.  DUE TO THE UNCERTAINTY OF TIMING SUCH SMALL FEATURES
WILL KEEP ALLBLEND POPS GOING FOR NOW WITH ONLY A FEW MINOR TWEAKS.
TEMPS THROUGH THE PERIOD WILL CONTINUE TO BE WELL ABOVE AVERAGE WITH
HIGHS IN THE 80S TO 90S AND LOWS IN THE 60S AND 70S.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z SUNDAY NIGHT)
ISSUED AT 1050 PM CDT SAT AUG 24 2013

EXPECT VFR CONDITIONS WITH WINDS UNDER 10KT THROUGH THE PERIOD.
THERE COULD BE SOME PATCHY FOG OVERNIGHT MAINLY IN THE
NORTH...ALTHOUGH CONFIDENCE NOT HIGH ENOUGH TO MENTION YET BUT
SOMETHING TO MONITOR TONIGHT.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...NONE.
MN...NONE.
&&

SHORT TERM...HOPPES
LONG TERM...JR
AVIATION...DK

Hazardous weather outlook, Aug 24, 6:01 AM CDT, 22 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
601 AM CDT SAT AUG 24 2013

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-251115-
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-EDDY-NELSON-GRAND FORKS-
GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT-RICHLAND-
WESTERN WALSH-
601 AM CDT SAT AUG 24 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH
DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA.

.DAY ONE...TODAY AND TONIGHT

A FEW WIDELY SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS MORNING
MAINLY EAST OF THE RED RIVER. STORMS ARE NOT EXPECTED TO BECOME
SEVERE BUT COULD PRODUCE LIGHTNING AND BRIEF DOWNPOURS.

SOUTHERLY WINDS WILL CONTINUE TO BRING WARM MOIST AIR INTO THE
REGION TODAY. HIGH TEMPERATURES WILL CLIMB INTO THE 90S IN MANY
AREAS. WITH HIGH HUMIDITIES...HEAT INDEX VALUES COULD CLIMB INTO
THE 98 TO 100 DEGREE RANGE FOR A FEW HOURS THIS
AFTERNOON...ESPECIALLY IN SOUTHEASTERN NORTH DAKOTA.

MORE SIGNIFICANT THUNDERSTORM ACTIVITY IS EXPECTED LATE THIS
AFTERNOON INTO THE EVENING...MAINLY NORTH OF THE HIGHWAY 200 CORRIDOR.
WARM MOIST AIR WILL BECOME UNSTABLE THIS AFTERNOON...AND AN UPPER
LEVEL DISTURBANCE MOVING INTO THE REGION FROM THE NORTHERN ROCKIES
WILL HELP DEVELOP THUNDERSTORMS BEGINNING IN THE DEVILS LAKE BASIN
LATE THIS AFTERNOON AND EVENING AND SPREADING EASTWARD OVERNIGHT.
SOME OF THE STORMS COULD BECOME STRONG TO SEVERE WITH LARGE HAIL
AND DAMAGING WINDS THE PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE LATE
MONDAY AFTERNOON INTO MONDAY NIGHT AND AGAIN WEDNESDAY NIGHT INTO
THURSDAY. HOW SEVERE THE STORMS WILL BE IS UNCERTAIN AT THIS
POINT.

SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

JR

In the hours before

Local storm report, Aug 24, 10:59 PM CDT, 5 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1059 PM CDT SAT AUG 24 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     HAIL             7 S WARROAD             48.81N 95.32W
08/24/2013  M1.00 INCH       ROSEAU             MN   PUBLIC

&&

JKAISER

Local storm report, Aug 24, 11:10 PM CDT, 5 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1110 PM CDT SAT AUG 24 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0740 PM     HAIL             4 S SALOL               48.81N 95.57W
08/24/2013  M2.00 INCH       ROSEAU             MN   BROADCAST MEDIA

            PUBLIC FACEBOOK REPORT RELAYED VIA MEDIA PARTNER.

&&

JKAISER

Special weather statement, Aug 24, 11:53 PM CDT, 4 hours 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1153 PM CDT SAT AUG 24 2013

MNZ006-008-009-013-250600-
EAST MARSHALL MN-LAKE OF THE WOODS MN-NORTH BELTRAMI MN-PENNINGTON
MN-
1153 PM CDT SAT AUG 24 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN MARSHALL...NORTHERN
BELTRAMI...EXTREME NORTHEASTERN PENNINGTON AND SOUTHERN LAKE OF THE
WOODS COUNTIES UNTIL 100 AM CDT...

AT 1149 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
THUNDERSTORMS ALONG A LINE EXTENDING FROM 25 MILES SOUTHEAST OF
GREENBUSH TO 26 MILES NORTH OF CLEARBROOK...MOVING TO THE EAST AT 40
MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THE STORMS.

THE STORMS WILL BE NEAR...
CARMEL AROUND MIDNIGHT CDT.
THORHULT...MALCOLM AND FOURTOWN AROUND 1205 AM CDT.
GATES CORNER AROUND 1215 AM CDT.
SHOTLEY AND OAKS CORNER AROUND 1235 AM CDT.

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

LAT...LON 4802 9540 4850 9606 4857 9443 4804 9441
TIME...MOT...LOC 0453Z 255DEG 35KT 4846 9573 4808 9529

JK

Special weather statement, Aug 25, 3:07 AM CDT, 1 hour 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
307 AM CDT SUN AUG 25 2013

NDZ038-250900-
BARNES ND-
307 AM CDT SUN AUG 25 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BARNES COUNTY UNTIL 400
AM CDT...

AT 304 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
THUNDERSTORM 9 MILES WEST OF VALLEY CITY...MOVING TO THE EAST AT 25
MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THE STORM...ALONG WITH FREQUENT LIGHTNING.

THE STORM WILL BE NEAR...
BALD HILL DAM AROUND 320 AM CDT.
VALLEY CITY AROUND 325 AM CDT.
ORISKA AROUND 350 AM CDT.
PILLSBURY AROUND 355 AM CDT.

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

LAT...LON 4722 9772 4678 9770 4686 9838 4715 9817
TIME...MOT...LOC 0807Z 263DEG 21KT 4696 9817

JR

Special weather statement, Aug 25, 3:11 AM CDT, 1 hour 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
311 AM CDT SUN AUG 25 2013

NDZ039-250915-
CASS ND-
311 AM CDT SUN AUG 25 2013

...SIGNIFICANT WEATHER ADVISORY FOR CASS COUNTY IN SOUTHEAST NORTH
DAKOTA UNTIL 415 AM CDT...

AT 308 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
THUNDERSTORM 12 MILES WEST OF CASSELTON...OR 26 MILES EAST OF VALLEY
CITY...MOVING TO THE EAST AT 25 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THE STORM...ALONG WITH FREQUENT LIGHTNING.

THE STORM WILL BE NEAR...
WHEATLAND AND ERIE AROUND 320 AM CDT.
CASSELTON...DURBIN AND AMENIA AROUND 335 AM CDT.
ARTHUR AROUND 340 AM CDT.
MAPLETON AROUND 350 AM CDT.

FOR MOTORISTS ON INTERSTATE 29...THE STORM WILL BE BETWEEN...MILE
MARKER 85 AROUND 405 AM CDT...AND MILE MARKER 66 AROUND 410 AM CDT...

BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME
SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE.

LAT...LON 4723 9685 4674 9682 4680 9764 4715 9748
TIME...MOT...LOC 0811Z 257DEG 24KT 4694 9743

JR

Local storm report, Aug 25, 4:13 AM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
413 AM CDT SUN AUG 25 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0353 AM     TSTM WND GST     FARGO                   46.88N 96.82W
08/25/2013  M59.00 MPH       CASS               ND   ASOS

&&

JR

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 7:02 PM CDT	Tornado Warning	FGF	Lake of the Woods, Roseau	43 min
Aug 24, 7:27 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	48 min
Aug 24, 8:07 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods, Roseau	53 min
Aug 24, 10:50 PM CDT	Special Weather Statement	FGF	Pennington	55 min
Aug 24, 11:53 PM CDT	Special Weather Statement	FGF	Beltrami	67 min
Aug 25, 12:08 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	52 min
Aug 25, 3:37 AM CDT	Severe Thunderstorm Warning	FGF	Clay, Norman	53 min
Aug 25, 5:27 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clearwater, Hubbard	48 min
Aug 25, 9:51 AM CDT	Heat Advisory	FGF	Grant, Otter Tail, Wadena, Wilkin	9 hr
Aug 25, 6:04 PM CDT	Severe Thunderstorm Warning	FGF	Hubbard	56 min
Aug 25, 6:57 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.