Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 94, NWS Twin Cities, MN

August 24, 2014Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 24, 2014, 5:49 PM CDT for Wright County, Minnesota. It was in force for 41 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, 5:49 PM CDT (22:49 UTC)
Expired
Aug 24, 2014, 6:30 PM CDT
In force
41 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Wright County, MN

The radar

The Minneapolis radar (KMPX), 43 km from the middle of the area, began a volume at 22:49 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.

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, 10.8 hours before the alert went out and 42 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.

255 
WUUS53 KMPX 242249
SVRMPX
MNC171-242330-
/O.NEW.KMPX.SV.W.0094.140824T2249Z-140824T2330Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN WRIGHT COUNTY IN CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 546 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
  BUFFALO...AND MOVING NORTHEAST AT 35 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...
  BUFFALO...BUFFALO AIRPORT...MONTICELLO...ST MICHAEL AND
  ALBERTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4530 9377 4530 9357 4529 9355 4527 9355
      4525 9352 4522 9355 4521 9364 4519 9365
      4517 9364 4500 9388 4510 9404 4532 9381
TIME...MOT...LOC 2249Z 225DEG 31KT 4512 9388

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

$$

JRB
2 follow-up statements
937 
WWUS53 KMPX 242312
SVSMPX

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

MNC171-242330-
/O.CON.KMPX.SV.W.0094.000000T0000Z-140824T2330Z/
WRIGHT MN-
612 PM CDT SUN AUG 24 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
WRIGHT COUNTY UNTIL 630 PM CDT...

AT 610 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTHWEST
OF ELK RIVER...AND MOVING NORTHEAST AT 35 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...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN WRIGHT COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT
IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT
OR SMALL INTERIOR ROOM.

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 4532 9381 4530 9377 4530 9357 4529 9355
      4527 9355 4525 9352 4522 9357 4520 9388
      4528 9386
TIME...MOT...LOC 2312Z 228DEG 33KT 4527 9369

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

$$

JC
109 
WWUS53 KMPX 242329
SVSMPX

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

MNC171-242339-
/O.EXP.KMPX.SV.W.0094.000000T0000Z-140824T2330Z/
WRIGHT MN-
629 PM CDT SUN AUG 24 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WRIGHT COUNTY
WILL EXPIRE AT 630 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 1100 PM CDT.

LAT...LON 4532 9381 4530 9377 4530 9357 4529 9355
      4527 9355 4525 9352 4522 9357 4520 9388
      4528 9386
TIME...MOT...LOC 2329Z 228DEG 33KT 4537 9352

$$

JC

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, 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
Aug 24, 6:59 PM CDTTornado WarningMPXKanabec31 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.