Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 124, NWS Twin Cities, MN

September 4, 2014Douglas County, Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 4, 2014, 6:05 AM CDT for Douglas County, Morrison County, Todd County, Minnesota. It was in force for 55 min. 4 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: Sep 4, 2014, 6:05 AM CDT (11:05 UTC)
Expired: Sep 4, 2014, 7:00 AM CDT
In force: 55 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Douglas County, MN, Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 183 km from the middle of the area, began a volume at 11:08 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
Sep 4, 6:20 AM CDT	TSTM WND DMG	Hewitt, MN	TREES REPORTED DOWN ON HWY. 210 AND A ROOF BLOWN OFF A BUILDING IN THE CITY OF HEWITT.
Sep 4, 6:31 AM CDT	TSTM WND DMG	Staples, MN	NUMEROUS TREES AND POWER LINES DOWN IN STAPLES.
Sep 4, 6:31 AM CDT	TSTM WND GST 79	Staples, MN
Sep 4, 6:40 AM CDT	TSTM WND GST 62	Staples, MN	STILL GUSTING ABOVE SEVERE LEVELS AT STAPLES 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
Sep 4, 5:02 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 11.1 hours before the alert went out and 181 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: 2049 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 337 m²/s²
Significant tornado parameter: 3.4
Supercell composite: 14.3

Open this sounding in Storm Lab

The text

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

352 
WUUS53 KMPX 041105
SVRMPX
MNC041-097-153-041200-
/O.NEW.KMPX.SV.W.0124.140904T1105Z-140904T1200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
605 AM CDT THU SEP 4 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...
  NORTHERN TODD COUNTY IN CENTRAL MINNESOTA...

* UNTIL 700 AM CDT

* AT 604 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 8 MILES NORTHEAST OF WADENA TO 7 MILES WEST OF
  PARKERS PRAIRIE...AND MOVING EAST AT 55 MPH.

  HAZARD...PING PONG 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...
  LONG PRAIRIE...STAPLES...HEWITT...BERTHA...ROSE CITY...EAGLE
  BEND...CLOTHO...CLARISSA...PHILBROOK...MOTLEY...BROWERVILLE AND
  CUSHING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4631 9455 4634 9443 4629 9433 4627 9433
      4592 9474 4610 9553 4611 9516 4636 9517
      4637 9515 4638 9475
TIME...MOT...LOC 1106Z 286DEG 48KT 4652 9500 4615 9544

HAIL...1.50IN
WIND...60MPH

$$

BORGHOFF

3 follow-up statements

602 
WWUS53 KMPX 041128
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
628 AM CDT THU SEP 4 2014

MNC041-041138-
/O.CAN.KMPX.SV.W.0124.000000T0000Z-140904T1200Z/
DOUGLAS MN-
628 AM CDT THU SEP 4 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DOUGLAS COUNTY IS
CANCELLED...

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

LAT...LON 4636 9471 4631 9455 4634 9443 4629 9433
      4627 9433 4594 9472 4603 9509 4611 9515
      4636 9517 4637 9515 4638 9475
TIME...MOT...LOC 1128Z 285DEG 46KT 4648 9464 4627 9483
          4612 9509

$$

MNC097-153-041200-
/O.CON.KMPX.SV.W.0124.000000T0000Z-140904T1200Z/
MORRISON MN-TODD MN-
628 AM CDT THU SEP 4 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN TODD
AND NORTHWESTERN MORRISON COUNTIES UNTIL 700 AM CDT...

AT 625 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES NORTHEAST OF STAPLES AIRPORT TO 7 MILES
SOUTHWEST OF STAPLES TO 9 MILES EAST OF PARKERS PRAIRIE...AND MOVING
EAST AT 55 MPH.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...
LONG PRAIRIE...PHILBROOK...CLARISSA...MOTLEY...BROWERVILLE AND
CUSHING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4636 9471 4631 9455 4634 9443 4629 9433
      4627 9433 4594 9472 4603 9509 4611 9515
      4636 9517 4637 9515 4638 9475
TIME...MOT...LOC 1128Z 285DEG 46KT 4648 9464 4627 9483
          4612 9509

HAIL...1.25IN
WIND...60MPH

$$

BORGHOFF

910 
WWUS53 KMPX 041132
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
632 AM CDT THU SEP 4 2014

MNC097-153-041200-
/O.CON.KMPX.SV.W.0124.000000T0000Z-140904T1200Z/
MORRISON MN-TODD MN-
632 AM CDT THU SEP 4 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN TODD
AND NORTHWESTERN MORRISON COUNTIES UNTIL 700 AM CDT...

AT 629 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 11 MILES NORTHEAST OF STAPLES AIRPORT TO 7 MILES SOUTH
OF STAPLES TO 12 MILES EAST OF PARKERS PRAIRIE...AND MOVING EAST AT
55 MPH.

THESE ARE VERY DANGEROUS STORMS.

HAZARD...80 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED. A GUST TO 79 MPH WAS MEASURED AT STAPLES   
         AIRPORT AT 631 AM. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
         SHELTER. MOBILE HOMES WILL BE HEAVILY DAMAGED. EXPECT
         CONSIDERABLE DAMAGE TO ROOFS...WINDOWS AND VEHICLES.
         EXTENSIVE TREE DAMAGE AND POWER OUTAGES ARE LIKELY.

LOCATIONS IMPACTED INCLUDE...
LONG PRAIRIE...CLARISSA...MOTLEY...BROWERVILLE AND CUSHING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS SITUATION WITH TORNADO LIKE WIND
SPEEDS EXPECTED. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE
ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS MAGNITUDE AND MAY BE
OVERTURNED. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THESE STORMS HAVE THE POTENTIAL TO CAUSE
SERIOUS INJURY AND SIGNIFICANT PROPERTY DAMAGE.

&&

LAT...LON 4636 9471 4631 9455 4634 9443 4629 9433
      4627 9433 4594 9472 4603 9509 4611 9515
      4636 9517 4637 9515 4638 9475
TIME...MOT...LOC 1132Z 285DEG 46KT 4646 9457 4625 9476
          4610 9502

HAIL...1.25IN
WIND...80MPH

$$

BORGHOFF

505 
WWUS53 KMPX 041158
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
658 AM CDT THU SEP 4 2014

MNC097-153-041208-
/O.EXP.KMPX.SV.W.0124.000000T0000Z-140904T1200Z/
MORRISON MN-TODD MN-
658 AM CDT THU SEP 4 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN TODD AND NORTHWESTERN
MORRISON COUNTIES WILL EXPIRE AT 700 AM CDT...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4636 9471 4631 9455 4634 9443 4629 9433
      4627 9433 4594 9472 4603 9509 4611 9515
      4636 9517 4637 9515 4638 9475
TIME...MOT...LOC 1158Z 285DEG 46KT 4637 9410 4616 9430
          4601 9456

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 7:22 PM CDT	Special Weather Statement	MPX	Chisago, Isanti	53 min
Sep 3, 7:44 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti	46 min
Sep 4, 5:14 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	35 min
Sep 4, 6:50 AM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Morrison	55 min
Sep 4, 7:21 AM CDT	Severe Thunderstorm Warning	MPX	Kanabec	39 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.