Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 84, NWS Grand Forks, ND

July 22, 2012Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 22, 2012, 2:17 PM CDT for Lake of the Woods County, Minnesota. It was in force for 36 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 22, 2012, 2:17 PM CDT (19:17 UTC)
Expired: Jul 22, 2012, 2:53 PM CDT
In force: 36 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lake of the Woods County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 242 km from the middle of the area, began a volume at 19:19 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 22, 2:20 PM CDT	HAIL 1.75	Baudette, MN	HAIL FELL AT THE LAKE OF THE WOODS CAMPGROUND.

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

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 7.3 hours before the alert went out and 97 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

323 
WUUS53 KFGF 221917
SVRFGF
MNC077-222015-
/O.NEW.KFGF.SV.W.0084.120722T1917Z-120722T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
217 PM CDT SUN JUL 22 2012

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA...

* UNTIL 315 PM CDT

* AT 215 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS LOCATED 3 
MILES   WEST OF CLEMENTSON...MOVING TO THE   SOUTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT BAUDETTE AND THEN MAINLY RURAL 
AREAS OF EAST CENTRAL LAKE OF THE WOODS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

&&

LAT...LON 4866 9483 4889 9468 4887 9467 4883 9469
      4878 9468 4873 9458 4872 9454 4870 9450
      4870 9443 4869 9442 4844 9442
TIME...MOT...LOC 1917Z 308DEG 43KT 4868 9448
WIND...HAIL 60MPH 1.00IN

$$
SPEICHER

2 follow-up statements

399 
WWUS53 KFGF 221935
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
235 PM CDT SUN JUL 22 2012

MNC077-222015-
/O.CON.KFGF.SV.W.0084.000000T0000Z-120722T2015Z/
LAKE OF THE WOODS MN-
235 PM CDT SUN JUL 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LAKE OF THE WOODS COUNTY IN NORTH CENTRAL MINNESOTA UNTIL 315 PM
CDT...

AT 228 PM CDT...AN NWS EMPLOYEE REPORTED A SEVERE THUNDERSTORM 
PRODUCING GOLF BALL SIZE HAIL NEAR BAUDETTE. THE STORM WAS LOCATED 2 
MILES WEST OF CLEMENTSON...MOVING TO THE SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN LAKE OF THE WOODS
  COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

&&

LAT...LON 4866 9483 4879 9468 4878 9468 4873 9458
      4872 9454 4870 9450 4870 9443 4869 9442
      4844 9442
TIME...MOT...LOC 1934Z 308DEG 43KT 4864 9439
WIND...HAIL 60MPH 1.75IN

$$
SPEICHER

910 
WWUS53 KFGF 221953
SVSFGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
253 PM CDT SUN JUL 22 2012

MNC077-222003-
/O.CAN.KFGF.SV.W.0084.000000T0000Z-120722T2015Z/
LAKE OF THE WOODS MN-
253 PM CDT SUN JUL 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LAKE OF THE WOODS
COUNTY IN NORTH CENTRAL MINNESOTA IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.  HOWEVER GUSTY WINDS ARE STILL POSSIBLE BEHIND THIS 
THUNDERSTORM.

LAT...LON 4866 9483 4879 9468 4878 9468 4873 9458
      4872 9454 4870 9450 4870 9443 4869 9442
      4844 9442
TIME...MOT...LOC 1953Z 311DEG 30KT 4860 9431

$$
SPEICHER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 12:19 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	41 min
Jul 22, 1:23 PM CDT	Special Weather Statement	FGF	Lake of the Woods	67 min
Jul 22, 1:44 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	46 min
Jul 22, 6:42 PM CDT	Severe Thunderstorm Warning	FGF	Clay, Wilkin	34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.