Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 101, NWS Twin Cities, MN

August 31, 2014Meeker County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 2014, 7:27 PM CDT for Meeker County, Wright County, Minnesota. It was in force for 48 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
Aug 31, 2014, 7:27 PM CDT (00:27 UTC)
Expired
Aug 31, 2014, 8:15 PM CDT
In force
48 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Meeker County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 52 km from the middle of the area, began a volume at 00:29 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

TimeReportWhereRemark
Aug 31, 7:50 PM CDTHAIL 1Maple Lake, 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.

IssuedProductOfficeLasted
Aug 31, 6:56 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 50 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 00:00Z on 2014-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1552 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 00:00Z on 2014-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
1552 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1054 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

438 
WUUS53 KMPX 010027
SVRMPX
MNC093-171-010115-
/O.NEW.KMPX.SV.W.0101.140901T0027Z-140901T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
727 PM CDT SUN AUG 31 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MEEKER COUNTY IN CENTRAL MINNESOTA...
  WRIGHT COUNTY IN CENTRAL MINNESOTA...

* UNTIL 815 PM CDT

* AT 724 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES
  SOUTHWEST OF MAPLE LAKE...AND MOVING NORTHEAST AT 30 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.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MAPLE LAKE AROUND 750 PM CDT.
  BUFFALO AROUND 755 PM CDT.
  LAKE MARIA STATE PARK AROUND 800 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE ANNANDALE...RASSAT...MAPLE
LAKE AIRPORT AND SILVER CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4535 9393 4526 9375 4502 9378 4498 9425
      4507 9427 4516 9437
TIME...MOT...LOC 0027Z 235DEG 26KT 4513 9420

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

$$
2 follow-up statements
549 
WWUS53 KMPX 010049
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
749 PM CDT SUN AUG 31 2014

MNC093-010059-
/O.CAN.KMPX.SV.W.0101.000000T0000Z-140901T0115Z/
MEEKER MN-
749 PM CDT SUN AUG 31 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MEEKER COUNTY IS
CANCELLED...

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

LAT...LON 4507 9424 4521 9424 4535 9393 4526 9375
      4502 9378 4498 9425
TIME...MOT...LOC 0049Z 235DEG 26KT 4522 9401

$$

MNC171-010115-
/O.CON.KMPX.SV.W.0101.000000T0000Z-140901T0115Z/
WRIGHT MN-
749 PM CDT SUN AUG 31 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WRIGHT COUNTY
UNTIL 815 PM CDT...

AT 747 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MAPLE LAKE...
AND MOVING NORTHEAST AT 30 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.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUFFALO AROUND 755 PM CDT.
  LAKE MARIA STATE PARK AROUND 800 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE MAPLE LAKE AIRPORT AND SILVER
CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4507 9424 4521 9424 4535 9393 4526 9375
      4502 9378 4498 9425
TIME...MOT...LOC 0049Z 235DEG 26KT 4522 9401

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

$$
830 
WWUS53 KMPX 010109
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
809 PM CDT SUN AUG 31 2014

MNC171-010119-
/O.EXP.KMPX.SV.W.0101.000000T0000Z-140901T0115Z/
WRIGHT MN-
809 PM CDT SUN AUG 31 2014

...THE SEVERE THUNDERSTORM WARNING FOR WRIGHT COUNTY WILL EXPIRE AT
815 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

LAT...LON 4507 9424 4521 9424 4535 9393 4526 9375
      4502 9378 4498 9425
TIME...MOT...LOC 0109Z 235DEG 26KT 4530 9384

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 7:08 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Renville, Sibley52 min
Aug 31, 7:18 PM CDTSpecial Weather StatementMPXIsanti, Kanabec, Mille Lacs, Sherburne, Wright57 min
Aug 31, 8:13 PM CDTSpecial Weather StatementMPXCarver, McLeod, Sibley, Wright47 min
Aug 31, 8:27 PM CDTSpecial Weather StatementMPXFreeborn63 min
Sep 1, 3:15 PM CDTSpecial Weather StatementMPXMartin60 min
Sep 1, 5:00 PM CDTSpecial Weather StatementMPXDouglas45 min
Sep 1, 5:43 PM CDTSpecial Weather StatementMPXDouglas47 min
Sep 1, 5:49 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope, Todd41 min
Sep 1, 6:13 PM CDTSpecial Weather StatementMPXSwift47 min
Sep 1, 6:43 PM CDTSpecial Weather StatementMPXStearns47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.