Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 70, NWS Grand Forks, ND

July 13, 2010Clay County, Norman County, Minnesota; Cass County, Traill County, North Dakota

NWS Grand Forks, ND issued this tornado warning at Jul 13, 2010, 7:19 PM CDT for Clay County, Norman County, Minnesota; Cass County, Traill County, North Dakota. It was in force for 56 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: Jul 13, 2010, 7:19 PM CDT (00:19 UTC)
Expired: Jul 13, 2010, 8:15 PM CDT
In force: 56 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon

Counties Clay County, MN, Norman County, MN, Cass County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 54 km from the middle of the area, began a volume at 00:20 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 13, 8:08 PM CDT	TORNADO	7 E Georgetown, MN	DEBRIS VIEWED FROM KVLY TOWER CAMERA. LOCATION IS APPROXIMATED.

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 tornado warning; the first came 49 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 13, 1:50 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.3 hours before the alert went out and 285 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: 3052 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

260 
WFUS53 KFGF 140019
TORFGF
MNC027-107-NDC017-097-140115-
/O.NEW.KFGF.TO.W.0070.100714T0019Z-100714T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
719 PM CDT TUE JUL 13 2010

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CLAY COUNTY IN NORTHWEST MINNESOTA...
  WESTERN NORMAN COUNTY IN NORTHWEST MINNESOTA...
  NORTHEASTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA...
  SOUTHEASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA...

* UNTIL 815 PM CDT

* AT 716 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS
  LOCATED 4 MILES WEST OF ARGUSVILLE...OR 17 MILES NORTHWEST OF
  FARGO...MOVING TO THE NORTHEAST AT 35 MPH.

* THE TORNADIC STORM WILL BE NEAR...
  GARDNER AROUND 725 PM CDT.
  GEORGETOWN AROUND 730 PM CDT.
  PERLEY AROUND 735 PM CDT.
  HENDRUM AROUND 740 PM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE TORNADIC STORM
INCLUDE FELTON...FELTON...BORUP...ADA AND ULEN.

FOR MOTORISTS ON INTERSTATE 29...THE TORNADIC STORM WILL BE
BETWEEN...MILE MARKER 79 AROUND 720 PM CDT...AND MILE MARKER 85
AROUND 725 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4711 9716 4750 9660 4750 9653 4708 9620
      4695 9704
TIME...MOT...LOC 0019Z 241DEG 31KT 4708 9699

$$

HOPKINS

1 follow-up statement

938 
WWUS53 KFGF 140046
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
746 PM CDT TUE JUL 13 2010

NDC097-140055-
/O.CAN.KFGF.TO.W.0070.000000T0000Z-100714T0115Z/
TRAILL ND-
746 PM CDT TUE JUL 13 2010

...THE TORNADO WARNING FOR SOUTHEASTERN TRAILL COUNTY IN SOUTHEAST
NORTH DAKOTA IS CANCELLED...

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

LAT...LON 4715 9701 4742 9647 4708 9620 4697 9693
TIME...MOT...LOC 0045Z 241DEG 31KT 4719 9670

$$

MNC027-107-NDC017-140115-
/O.CON.KFGF.TO.W.0070.000000T0000Z-100714T0115Z/
NORMAN MN-CLAY MN-CASS ND-
746 PM CDT TUE JUL 13 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN CLAY AND WESTERN
NORMAN COUNTIES IN NORTHWEST MINNESOTA...AND NORTHEASTERN CASS COUNTY
IN SOUTHEAST NORTH DAKOTA UNTIL 815 PM CDT...

AT 743 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES EAST OF 
PERLEY...OR 21 MILES NORTH OF FARGO...MOVING TO THE EAST AT 25 MPH.

THE TORNADIC STORM WILL BE NEAR...
  FELTON AROUND 750 PM CDT.
  BORUP AROUND 800 PM CDT.
  ADA AND HADLER AROUND 805 PM CDT.
  ULEN AROUND 810 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES
FOR A STURDY BUILDING.

&&

LAT...LON 4715 9701 4742 9647 4708 9620 4697 9693
TIME...MOT...LOC 0045Z 241DEG 31KT 4719 9670

$$

BH/JK

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jul 13, 4:30 PM CDT, 2 hours 49 minutes earlier.

Area forecast discussion, Jul 13, 4:30 PM CDT, 2 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND FORKS ND
430 PM CDT TUE JUL 13 2010

DELAYED. WILL UPDATE SHORTLY.

&&

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

HOPPES

Hazardous weather outlook, Jul 13, 3:07 PM CDT, 4 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND FORKS ND
307 PM CDT TUE JUL 13 2010

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-142015-
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-
307 PM CDT TUE JUL 13 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

AN OUTBREAK OF SEVERE THUNDERSTORMS CONTINUES TO SEEM LIKELY.
THUNDERSTORMS HAVE ALREADY STARTED TO DEVELOP OVER CENTRAL NORTH
DAKOTA...AND MORE WILL SPREAD INTO EASTERN NORTH DAKOTA DURING THE
LATE AFTERNOON AND EVENING HOURS. SOME OF THE STORMS COULD BE
SUPERCELLS...WITH LARGE HAIL...DAMAGING WINDS...AND TORNADOES
POSSIBLE. THE STORMS WILL CONTINUE TO MOVE EASTWARD...ARRIVING IN
THE RED RIVER VALLEY AROUND EARLY EVENING AND INTO WESTERN
MINNESOTA BY LATE EVENING. A TORNADO WATCH IS IN EFFECT.

ANOTHER WAVE OF THUNDERSTORMS WILL DEVELOP LATER TONIGHT AS A COLD
FRONT MOVES INTO THE NORTHERN PLAINS. A LINE OF THUNDERSTORMS IS
MOST LIKELY...WITH ACTIVITY AGAIN BECOMING SEVERE. DAMAGING WINDS
WILL BE THE PRIMARY THREAT...BUT SOME HAIL AND EVEN AN ISOLATED
TORNADO IS NOT OUT OF THE QUESTION. LOCALLY HEAVY RAIN WILL ALSO
BE AN ISSUE...WITH MANY LOCATIONS RECEIVING STORM TOTAL RAINFALL
AMOUNTS BETWEEN 1 AND 3 INCHES. THE POTENTIAL FOR FLASH FLOODING
IS POSSIBLE WHERE SEVERAL THUNDERSTORMS PASS OVER THE SAME AREA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A FEW STRONG TO SEVERE STORMS MAY CONTINUE INTO WEDNESDAY MORNING.

THUNDERSTORMS ARE POSSIBLE ON SATURDAY...WITH THE POTENTIAL FOR A
FEW STRONGER STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND TONIGHT.

JR/BB

In the hours before

Special weather statement, Jul 13, 4:55 PM CDT, 2 hours 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
455 PM CDT TUE JUL 13 2010

NDZ014-015-024-132245-
BENSON ND-EDDY ND-RAMSEY ND-
455 PM CDT TUE JUL 13 2010

...SIGNIFICANT WEATHER ADVISORY FOR EXTREME SOUTHWESTERN RAMSEY...
SOUTHEASTERN BENSON AND NORTHERN EDDY COUNTIES UNTIL 545 PM CDT...

AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
A THUNDERSTORM WAS RAPIDLY DEVELOPING 10 MILES NORTHWEST OF NEW
ROCKFORD...OR 26 MILES SOUTHWEST OF DEVILS LAKE...MOVING TO THE
NORTHEAST AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THE STORM...ALONG
WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

THE STORM WILL BE NEAR...
SHEYENNE AROUND 505 PM CDT.
OBERON AROUND 510 PM CDT.
WARWICK...TOKIO AND FORT TOTTEN AROUND 545 PM CDT.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

RITTERLING

Local storm report, Jul 13, 5:10 PM CDT, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
510 PM CDT TUE JUL 13 2010

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

0430 PM     HAIL             5 NW LITCHVILLE         46.71N 98.27W
07/13/2010  E1.50 INCH       BARNES             ND   PUBLIC

&&

BRAMER

Local storm report, Jul 13, 6:20 PM CDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
620 PM CDT TUE JUL 13 2010

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

0618 PM     HAIL             5 E ENDERLIN            46.62N 97.49W
07/13/2010  E1.50 INCH       RANSOM             ND   STORM CHASER

&&

BRAMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 7:54 PM CDT	Tornado Warning	FGF	Clay, Wilkin	66 min
Jul 13, 8:05 PM CDT	Tornado Warning	FGF	Becker, Clay, Mahnomen, Norman	55 min
Jul 13, 8:53 PM CDT	Tornado Warning	FGF	Becker, Clay, Otter Tail, Wilkin	67 min
Jul 13, 8:55 PM CDT	Tornado Warning	FGF	Becker, Clay	65 min
Jul 13, 9:55 PM CDT	Tornado Warning	FGF	Otter Tail	65 min
Jul 14, 2:50 AM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	42 min
Jul 14, 4:29 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Mahnomen, Norman, Otter Tail, Wilkin	61 min
Jul 14, 5:26 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Hubbard, Mahnomen, Norman, Pennington and 2 more	64 min
Jul 14, 5:29 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Clearwater, Hubbard, Mahnomen, Norman and 2 more	61 min
Jul 14, 5:37 AM CDT	Severe Thunderstorm Warning	FGF	Clay, Otter Tail, Wilkin	53 min
Jul 14, 5:46 AM CDT	Tornado Warning	FGF	Otter Tail	59 min
Jul 14, 6:12 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Clay, Grant, Otter Tail, Wilkin	63 min
Jul 14, 6:26 AM CDT	Severe Thunderstorm Warning	FGF	Hubbard, Wadena	34 min
Jul 14, 6:32 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater	28 min
Jul 14, 6:34 AM CDT	Flash Flood Warning	FGF	Otter Tail	4 hr
Jul 14, 7:01 AM CDT	Severe Thunderstorm Warning	FGF	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 2 more	43 min
Jul 14, 7:18 AM CDT	Tornado Warning	FGF	Wadena	23 min
Jul 13, 10:33 PM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Towner	42 min
Jul 14, 3:02 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Ransom	58 min
Jul 14, 3:30 AM CDT	Tornado Warning	FGF	Ransom, Sargent	60 min
Jul 14, 3:50 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom, Richland	55 min
Jul 14, 4:15 AM CDT	Tornado Warning	FGF	Ransom, Richland, Sargent	44 min
Jul 14, 4:20 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Ransom	55 min
Jul 14, 4:46 AM CDT	Severe Thunderstorm Warning	FGF	Cavalier, Ramsey, Walsh	59 min
Jul 14, 4:56 AM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass, Ransom, Richland, Sargent	64 min

Nearby

Tornado Warnings in Minnesota, 2010 Tornado Warnings in North Dakota, 2010 Every tornado warning in 2010 Tornadoes 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.