Alert archive / Minnesota / Tornado Warnings in 2014

Tornado Warning 25, NWS Twin Cities, MN

August 24, 2014Kanabec County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 24, 2014, 6:59 PM CDT for Kanabec County, Minnesota. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 24, 2014, 6:59 PM CDT (23:59 UTC)
Expired
Aug 24, 2014, 7:30 PM CDT
In force
31 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Kanabec County, MN

The radar

The Duluth radar (KDLH), 110 km from the middle of the area, began a volume at 00:04 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 24, 3:45 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 12.0 hours before the alert went out and 145 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2014-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1234 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2014-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 355 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

956 
WFUS53 KMPX 242359
TORMPX
MNC065-250030-
/O.NEW.KMPX.TO.W.0025.140824T2359Z-140825T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
659 PM CDT SUN AUG 24 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 730 PM CDT

* AT 658 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES NORTH OF KNIFE LAKE...AND MOVING
  NORTHEAST AT 35 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHERN
  KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 4615 9304 4613 9305 4599 9343 4608 9343
      4617 9329 4616 9306
TIME...MOT...LOC 2359Z 235DEG 31KT 4610 9333

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JRB
3 follow-up statements
243 
WWUS53 KMPX 250005
SVSMPX

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

MNC065-250030-
/O.CON.KMPX.TO.W.0025.000000T0000Z-140825T0030Z/
KANABEC MN-
705 PM CDT SUN AUG 24 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN KANABEC
COUNTY UNTIL 730 PM CDT...

AT 704 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 9 MILES SOUTH OF MCGRATH...AND MOVING NORTHEAST AT 35
MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
         LIKELY.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF NORTHERN KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 4615 9304 4613 9305 4601 9337 4609 9341
      4617 9329 4616 9306
TIME...MOT...LOC 0005Z 235DEG 31KT 4612 9326

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JRB
974 
WWUS53 KMPX 250012
SVSMPX

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

MNC065-250030-
/O.CON.KMPX.TO.W.0025.000000T0000Z-140825T0030Z/
KANABEC MN-
712 PM CDT SUN AUG 24 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN KANABEC
COUNTY UNTIL 730 PM CDT...

AT 709 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTH OF MCGRATH...AND MOVING NORTHEAST AT 35
MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
         LIKELY.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 4615 9308 4606 9336 4609 9341 4617 9329
TIME...MOT...LOC 0012Z 235DEG 31KT 4616 9321

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

JRB
955 
WWUS53 KMPX 250022
SVSMPX

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

MNC065-250033-
/O.EXP.KMPX.TO.W.0025.000000T0000Z-140825T0030Z/
KANABEC MN-
722 PM CDT SUN AUG 24 2014

...THE TORNADO WARNING FOR NORTHEASTERN KANABEC COUNTY WILL EXPIRE AT
730 PM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 11 PM CDT.

LAT...LON 4615 9308 4606 9336 4609 9341 4617 9329
TIME...MOT...LOC 0023Z 235DEG 31KT 4621 9310

$$

JRB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 2:15 AM CDTSevere Thunderstorm WarningMPXChippewa, Douglas, Kandiyohi, Pope, Swift30 min
Aug 24, 2:40 AM CDTSevere Thunderstorm WarningMPXDouglas, Kandiyohi, Pope, Stearns, Todd65 min
Aug 24, 5:03 PM CDTSevere Thunderstorm WarningMPXBenton, Morrison57 min
Aug 24, 5:18 PM CDTSpecial Weather StatementMPXRamsey42 min
Aug 24, 5:24 PM CDTSpecial Weather StatementMPXDakota51 min
Aug 24, 5:29 PM CDTSevere Thunderstorm WarningMPXBenton, Morrison46 min
Aug 24, 5:38 PM CDTTornado WarningMPXBenton, Morrison37 min
Aug 24, 5:49 PM CDTSevere Thunderstorm WarningMPXWright41 min
Aug 24, 6:02 PM CDTTornado WarningMPXMille Lacs43 min
Aug 24, 6:08 PM CDTSevere Thunderstorm WarningMPXKanabec, Mille Lacs, Morrison52 min
Aug 24, 6:31 PM CDTSpecial Weather StatementMPXSherburne29 min
Aug 24, 6:57 PM CDTSpecial Weather StatementMPXMille Lacs48 min

Nearby

Tornado Warnings in Minnesota, 2014Every tornado warning in 2014Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.