Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 70, NWS Twin Cities, MN

July 22, 2014Kanabec County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 22, 2014, 12:47 AM CDT for Kanabec County, Mille Lacs County, Minnesota. It was in force for 58 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, 2014, 12:47 AM CDT (05:47 UTC)
Expired: Jul 22, 2014, 1:45 AM CDT
In force: 58 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 70.0 mph

Counties Kanabec County, MN, Mille Lacs County, MN

The radar

The Duluth radar (KDLH), 125 km from the middle of the area, began a volume at 05:49 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, 12:57 AM CDT	HAIL 2	Ogilvie, MN

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 21, 9:24 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.8 hours before the alert went out and 134 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: 3298 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

867 
WUUS53 KMPX 220547
SVRMPX
MNC065-095-220645-
/O.NEW.KMPX.SV.W.0070.140722T0547Z-140722T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1247 AM CDT TUE JUL 22 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KANABEC COUNTY IN EAST CENTRAL MINNESOTA...
  MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 145 AM CDT

* AT 1243 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 9 MILES SOUTHWEST OF ONAMIA TO MILACA...AND MOVING
  EAST AT 40 MPH.

  HAZARD...70 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
           ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE...
  LAKE MILLE LACS...MORA...ONAMIA...KNIFE LAKE...RUM RIVER STATE
  FOREST...BAYVIEW...OGILVIE...LEWIS LAKE...WAHKON...BRUNSWICK...
  ISLE...MORA AIRPORT...GRASSTON...WARMAN AND QUAMBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4616 9341 4616 9306 4615 9304 4598 9304
      4597 9313 4573 9314 4573 9376 4596 9377
      4606 9368 4624 9363 4624 9342
TIME...MOT...LOC 0547Z 263DEG 35KT 4596 9371 4576 9353

HAIL...1.25IN
WIND...70MPH

$$

BORGHOFF

4 follow-up statements

391 
WWUS53 KMPX 220603
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
103 AM CDT TUE JUL 22 2014

MNC065-095-220645-
/O.CON.KMPX.SV.W.0070.000000T0000Z-140722T0645Z/
KANABEC MN-MILLE LACS MN-
103 AM CDT TUE JUL 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MILLE
LACS AND KANABEC COUNTIES UNTIL 145 AM CDT...

AT 101 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES WEST OF
MORA...AND MOVING EAST AT 55 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...
MORA...KNIFE LAKE...BRUNSWICK...MORA AIRPORT...WARMAN...GRASSTON AND
QUAMBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4595 9363 4606 9354 4617 9344 4616 9341
      4616 9306 4615 9304 4598 9304 4597 9313
      4573 9314 4573 9376
TIME...MOT...LOC 0604Z 254DEG 46KT 4591 9336

HAIL...1.00IN
WIND...60MPH

$$

BORGHOFF

216 
WWUS53 KMPX 220609
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
109 AM CDT TUE JUL 22 2014

MNC065-095-220645-
/O.CON.KMPX.SV.W.0070.000000T0000Z-140722T0645Z/
KANABEC MN-MILLE LACS MN-
109 AM CDT TUE JUL 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL MILLE
LACS AND KANABEC COUNTIES UNTIL 145 AM CDT...

AT 108 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MORA...AND
MOVING EAST AT 55 MPH.

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

SOURCE...TRAINED WEATHER SPOTTERS.

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...
GRASSTON AND QUAMBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4573 9369 4616 9341 4616 9306 4615 9304
      4598 9304 4597 9313 4573 9314
TIME...MOT...LOC 0609Z 254DEG 46KT 4592 9327

HAIL...1.75IN
WIND...60MPH

$$

BORGHOFF

492 
WWUS53 KMPX 220623
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
123 AM CDT TUE JUL 22 2014

MNC095-220633-
/O.CAN.KMPX.SV.W.0070.000000T0000Z-140722T0645Z/
MILLE LACS MN-
123 AM CDT TUE JUL 22 2014

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MILLE LACS COUNTY IS
CANCELLED...

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

LAT...LON 4615 9304 4598 9304 4597 9313 4573 9314
      4573 9351 4575 9352 4615 9322 4616 9306
TIME...MOT...LOC 0623Z 234DEG 34KT 4600 9312

$$

MNC065-220645-
/O.CON.KMPX.SV.W.0070.000000T0000Z-140722T0645Z/
KANABEC MN-
123 AM CDT TUE JUL 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KANABEC COUNTY
UNTIL 145 AM CDT...

AT 121 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES EAST OF
KNIFE LAKE...AND MOVING NORTHEAST AT 40 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...
  MAINLY RURAL AREAS OF EASTERN KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4615 9304 4598 9304 4597 9313 4573 9314
      4573 9351 4575 9352 4615 9322 4616 9306
TIME...MOT...LOC 0623Z 234DEG 34KT 4600 9312

HAIL...1.00IN
WIND...60MPH

$$

BORGHOFF

810 
WWUS53 KMPX 220644
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
144 AM CDT TUE JUL 22 2014

MNC065-220654-
/O.EXP.KMPX.SV.W.0070.000000T0000Z-140722T0645Z/
KANABEC MN-
144 AM CDT TUE JUL 22 2014

...THE SEVERE THUNDERSTORM WARNING FOR KANABEC COUNTY WILL EXPIRE AT
145 AM CDT...

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

LAT...LON 4615 9304 4598 9304 4597 9313 4573 9314
      4573 9351 4575 9352 4615 9322 4616 9306
TIME...MOT...LOC 0644Z 234DEG 34KT 4611 9289

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 10:13 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	47 min
Jul 21, 10:33 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope	42 min
Jul 21, 11:08 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stearns, Todd	67 min
Jul 21, 11:36 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Stearns	39 min
Jul 22, 12:11 AM CDT	Special Weather Statement	MPX	Benton, Isanti, Kanabec, Mille Lacs	79 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.