Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 93, NWS Twin Cities, MN

August 24, 2014Benton County, Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2014, 5:29 PM CDT for Benton County, Morrison County, Minnesota. It was in force for 46 min. 9 reports 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 24, 2014, 5:29 PM CDT (22:29 UTC)
Expired: Aug 24, 2014, 6:15 PM CDT
In force: 46 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Benton County, MN, Morrison County, MN

The radar

The Minneapolis radar (KMPX), 120 km from the middle of the area, began a volume at 22:28 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 24, 5:47 PM CDT	TORNADO 0	3 Ssw Morrill, MN	TORNADO SPUN UP JUST NORTHEAST OF THE CORNER OF 155TH ST NE AND 85TH AVE NE /COUNTY ROAD 11/ AT 547 PM. IT TRACKED EAST NORTHEAST FOR 5.8 MILES AND DISSIPATED SOUTHEAST OF THE CORNER OF NATURE RD AND 370TH AVE IN MORRISON COUNTY AT 602 PM. NARROW TREE DAMAGE A
Aug 24, 5:50 PM CDT	FUNNEL CLOUD	8 Ne Rice, MN	A FUNNEL CLOUD WAS REPORTED BY A TRAINED SPOTTER JUST SOUTH OF LITTLE ROCK.
Aug 24, 5:55 PM CDT	FUNNEL CLOUD	3 Sw Granite Ledge, MN	A FUNNEL CLOUD WAS REPORTED 4 MILES SOUTH OF MORRILL.
Aug 24, 5:59 PM CDT	FUNNEL CLOUD	7 Nne Gilman, MN	FUNNEL CLOUD SPOTTED ALONG ROUTE 33.
Aug 24, 6:05 PM CDT	TORNADO	2 W Granite Ledge, MN	A TORNADO WAS REPORTED BY A TRAINED SPOTTER AT THE INTERSECTION OF COUNTY ROADS 22 AND 70. A DAMAGE PATH STRETCHED SEVERAL MILES TO THE NORTHEAST.
Aug 24, 6:05 PM CDT	TORNADO	4 W Granite Ledge, MN	TORNADO DAMAGE WAS REPORTED BY A TRAINED SPOTTER A QUARTER MILE EAST OF COUNTY RD 22 AND 155TH AVE. NUMEROUS TREES WERE DOWN, WINDOWS WERE BLOWN OUT OF BUILDINGS AND CARS, AND A ROOF WAS BLOWN OFF OF A BARN.
Aug 24, 6:06 PM CDT	HAIL 2	7 S Hillman, MN	A TRAINED SPOTTER REPORTED 2.2 INCH DIAMETER HAIL 7.5 MILES SOUTH OF HILLMAN.
Aug 24, 6:07 PM CDT	HAIL 2	6 S Hillman, MN	TWO AND ONE QUARTER INCH HAIL DAMAGED NORTH SIDE OF RESIDENCE ONE HALF MILE NORTH OF INTERSECTION OF COUNTY RD 34 AND COUNTY ROAD 33. TIME ESTIMATED FROM RADAR. REPORT ORIGINATED ON SOCIAL MEDIA.
Aug 24, 6:11 PM CDT	FUNNEL CLOUD	3 Ese Morrill, MN	SHERIFF DEPUTIES REPORTED POSSIBLE TORNADO NEAR COUNTY ROUTES 22 AND 66. VIEWED FUNNEL CLOUD BOUNCING UP AND DOWN...POSSIBLY TOUCHING GROUND.

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
Aug 24, 3:45 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 119 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: 1234 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 355 m²/s²
0-3 km storm-relative helicity: 331 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

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

032 
WUUS53 KMPX 242229
SVRMPX
MNC009-097-242315-
/O.NEW.KMPX.SV.W.0093.140824T2229Z-140824T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
529 PM CDT SUN AUG 24 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BENTON COUNTY IN CENTRAL MINNESOTA...
  SOUTHEASTERN MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 615 PM CDT

* AT 528 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES
  NORTHWEST OF FOLEY...AND MOVING NORTHEAST AT 35 MPH.

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

  SOURCE...RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE...
  LITTLE ROCK...GILMAN...MORRILL...RUM RIVER AND HILLMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4598 9381 4598 9377 4578 9377 4567 9414
      4575 9422 4614 9381
TIME...MOT...LOC 2230Z 235DEG 29KT 4578 9407

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH

$$

JRB

2 follow-up statements

044 
WWUS53 KMPX 242244
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
544 PM CDT SUN AUG 24 2014

MNC009-097-242315-
/O.CON.KMPX.SV.W.0093.000000T0000Z-140824T2315Z/
BENTON MN-MORRISON MN-
544 PM CDT SUN AUG 24 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
MORRISON AND NORTHERN BENTON COUNTIES UNTIL 615 PM CDT...

AT 544 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES NORTH OF
FOLEY...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...TENNIS BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
RUM RIVER AND HILLMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4598 9381 4598 9377 4578 9377 4569 9407
      4579 9417 4614 9381
TIME...MOT...LOC 2245Z 235DEG 29KT 4585 9393

TORNADO...POSSIBLE
HAIL...2.50IN
WIND...60MPH

$$

JRB

370 
WWUS53 KMPX 242305
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
605 PM CDT SUN AUG 24 2014

MNC009-097-242315-
/O.CON.KMPX.SV.W.0093.000000T0000Z-140824T2315Z/
BENTON MN-MORRISON MN-
605 PM CDT SUN AUG 24 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
MORRISON AND NORTHEASTERN BENTON COUNTIES UNTIL 615 PM CDT...

AT 605 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES NORTHWEST
OF MILACA...AND MOVING NORTHEAST AT 25 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN MORRISON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4598 9381 4598 9377 4582 9377 4578 9395
      4590 9402 4602 9381
TIME...MOT...LOC 2306Z 239DEG 23KT 4589 9382

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH

$$

JRB

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 24, 2:15 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Douglas, Kandiyohi, Pope, Swift	30 min
Aug 24, 2:40 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Kandiyohi, Pope, Stearns, Todd	65 min
Aug 24, 5:03 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison	57 min
Aug 24, 5:18 PM CDT	Special Weather Statement	MPX	Ramsey	42 min
Aug 24, 5:24 PM CDT	Special Weather Statement	MPX	Dakota	51 min
Aug 24, 5:38 PM CDT	Tornado Warning	MPX	Benton, Morrison	37 min
Aug 24, 5:49 PM CDT	Severe Thunderstorm Warning	MPX	Wright	41 min
Aug 24, 6:02 PM CDT	Tornado Warning	MPX	Mille Lacs	43 min
Aug 24, 6:08 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs, Morrison	52 min
Aug 24, 6:31 PM CDT	Special Weather Statement	MPX	Sherburne	29 min
Aug 24, 6:57 PM CDT	Special Weather Statement	MPX	Mille Lacs	48 min
Aug 24, 6:59 PM CDT	Tornado Warning	MPX	Kanabec	31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014 Every severe thunderstorm warning in 2014

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.