Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 83, NWS Grand Forks, ND

July 17, 2011Grant County, Otter Tail County, Wilkin County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 17, 2011, 9:14 PM CDT for Grant County, Otter Tail County, Wilkin County, Minnesota. It was in force for 61 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 17, 2011, 9:14 PM CDT (02:14 UTC)
Expired: Jul 17, 2011, 10:15 PM CDT
In force: 61 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grant County, MN, Otter Tail County, MN, Wilkin County, MN

The radar

The Aberdeen radar (KABR), 193 km from the middle of the area, began a volume at 02:15 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 17, 9:55 PM CDT	TSTM WND GST 62	1 Sw Elbow Lake, MN	PEAK WIND MEASURED AT KY63... THE ELBOW LAKE AIRPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 17, 3:37 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.2 hours before the alert went out and 219 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: 5496 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1457 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 13.8

Open this sounding in Storm Lab

The text

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

754 
WUUS53 KFGF 180214
SVRFGF
MNC051-111-167-180315-
/O.NEW.KFGF.SV.W.0083.110718T0214Z-110718T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
914 PM CDT SUN JUL 17 2011

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRANT COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHWESTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHEASTERN WILKIN COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 1015 PM CDT

* AT 912 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM NEAR FOXHOME TO 3 MILES EAST OF
  TINTAH TO 4 MILES NORTH OF DUMONT...MOVING TO THE EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WESTERN AROUND 920 PM CDT.
  WENDELL AND NORCROSS AROUND 925 PM CDT.
  HERMAN AROUND 930 PM CDT.
  ELBOW LAKE AROUND 935 PM CDT.

THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORMS
INCLUDE DALTON...ERDAHL AND HOFFMAN.

FOR MOTORISTS ON INTERSTATE 94...SEVERE THUNDERSTORMS WILL BE BETWEEN
MINNESOTA MILE MARKER 58 AND MINNESOTA MILE MARKER 80...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND TORNADOES ARE ALL
POSSIBLE IN SEVERE THUNDERSTORMS. SEEK SHELTER IN A REINFORCED
BUILDING IMMEDIATELY.

&&

LAT...LON 4576 9627 4601 9627 4601 9638 4603 9639
      4630 9650 4620 9558 4611 9555 4610 9576
      4593 9575 4576 9575 4575 9577 4575 9625
TIME...MOT...LOC 0214Z 283DEG 32KT 4628 9632 4600 9624
          4577 9641
WIND...HAIL 60MPH 1.00IN

$$

HOPPES

3 follow-up statements

734 
WWUS53 KFGF 180235
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
935 PM CDT SUN JUL 17 2011

MNC051-111-167-180315-
/O.CON.KFGF.SV.W.0083.000000T0000Z-110718T0315Z/
GRANT MN-WILKIN MN-OTTER TAIL MN-
935 PM CDT SUN JUL 17 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
OTTER TAIL...SOUTHEASTERN WILKIN AND GRANT COUNTIES IN WEST CENTRAL
MINNESOTA UNTIL 1015 PM CDT...

AT 930 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF FERGUS FALLS
TO 3 MILES SOUTHWEST OF ELBOW LAKE TO 3 MILES SOUTH OF HERMAN...
MOVING TO THE EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BARRETT AROUND 940 PM CDT.
  DALTON AROUND 945 PM CDT.
  ERDAHL AND ASHBY AROUND 950 PM CDT.
  HOFFMAN AROUND 955 PM CDT.

FOR MOTORISTS ON INTERSTATE 94...SEVERE THUNDERSTORMS WILL BE BETWEEN
MINNESOTA MILE MARKER 60 AND MINNESOTA MILE MARKER 80...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT
STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

&&

LAT...LON 4576 9627 4601 9627 4601 9638 4603 9639
      4630 9650 4620 9558 4611 9555 4610 9576
      4593 9575 4576 9575 4575 9577 4575 9625
TIME...MOT...LOC 0235Z 283DEG 32KT 4624 9606 4596 9596
          4575 9608

$$

HOPPES

100 
WWUS53 KFGF 180256
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
956 PM CDT SUN JUL 17 2011

MNC167-180306-
/O.CAN.KFGF.SV.W.0083.000000T0000Z-110718T0315Z/
WILKIN MN-
956 PM CDT SUN JUL 17 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILKIN COUNTY IN
WEST CENTRAL MINNESOTA IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4626 9616 4620 9558 4611 9555 4610 9576
      4593 9575 4576 9575 4575 9577 4575 9602
TIME...MOT...LOC 0256Z 283DEG 32KT 4620 9580 4592 9570
          4576 9571

$$

MNC051-111-180315-
/O.CON.KFGF.SV.W.0083.000000T0000Z-110718T0315Z/
GRANT MN-OTTER TAIL MN-
956 PM CDT SUN JUL 17 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
OTTER TAIL AND EASTERN GRANT COUNTIES IN WEST CENTRAL MINNESOTA UNTIL
1015 PM CDT...

AT 954 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 5 MILES EAST OF DALTON TO 6 MILES
SOUTH OF EVANSVILLE TO 2 MILES SOUTHWEST OF KENSINGTON...MOVING TO
THE EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF EASTERN GRANT
AND SOUTH CENTRAL OTTER TAIL COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT
STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.

&&

LAT...LON 4626 9616 4620 9558 4611 9555 4610 9576
      4593 9575 4576 9575 4575 9577 4575 9602
TIME...MOT...LOC 0256Z 283DEG 32KT 4620 9580 4592 9570
          4576 9571

$$

HOPPES

813 
WWUS53 KFGF 180314
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1014 PM CDT SUN JUL 17 2011

MNC051-111-180324-
/O.EXP.KFGF.SV.W.0083.000000T0000Z-110718T0315Z/
GRANT MN-OTTER TAIL MN-
1014 PM CDT SUN JUL 17 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL OTTER TAIL AND
EASTERN GRANT COUNTIES IN WEST CENTRAL MINNESOTA WILL EXPIRE AT 1015
PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

LAT...LON 4626 9616 4620 9558 4611 9555 4610 9576
      4593 9575 4576 9575 4575 9577 4575 9602
TIME...MOT...LOC 0314Z 283DEG 32KT 4616 9557 4588 9548
          4572 9549

$$

HOPPES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 8:16 PM CDT	Severe Thunderstorm Warning	FGF	Grant, Otter Tail, Wilkin	59 min
Jul 17, 8:38 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Marshall	41 min
Jul 18, 3:19 AM CDT	Dense Fog Advisory	FGF	Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Otter Tail and 1 more	7 hr
Jul 18, 10:28 AM CDT	River Flood Warning	FGF	Kittson	11 days

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.