Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 102, NWS Twin Cities, MN

September 1, 2014Douglas County, Pope County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 1, 2014, 5:49 PM CDT for Douglas County, Pope County, Todd County, Minnesota. It was in force for 41 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
Sep 1, 2014, 5:49 PM CDT (22:49 UTC)
Expired
Sep 1, 2014, 6:30 PM CDT
In force
41 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Douglas County, MN, Pope County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 166 km from the middle of the area, began a volume at 22:50 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
Sep 1, 6:13 PM CDTHAIL 1Alexandria, MNQUARTER SIZED HAIL REPORTED IN ALEXANDRIA VIA TWITTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 164 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 2014-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 736 joules per kilogram.LCLEL10008507005003002001001 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 2014-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -129 square meters per square second.19395878Sfc1 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
736 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
463 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-129 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.2

Open this sounding in Storm Lab

The text

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

569 
WUUS53 KMPX 012249
SVRMPX
MNC041-121-153-012330-
/O.NEW.KMPX.SV.W.0102.140901T2249Z-140901T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
549 PM CDT MON SEP 1 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHEASTERN POPE COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHWESTERN TODD COUNTY IN CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 546 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
  OF ALEXANDRIA...AND MOVING EAST 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.

* LOCATIONS IMPACTED INCLUDE...
  ALEXANDRIA...LAKE OSAKIS...ALEXANDRIA AIRPORT...FORADA...NELSON...
  VILLARD...OSAKIS AND WEST UNION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4580 9492 4577 9514 4571 9526 4590 9566
      4601 9510
TIME...MOT...LOC 2248Z 286DEG 27KT 4590 9545

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

$$
2 follow-up statements
505 
WWUS53 KMPX 012307
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
607 PM CDT MON SEP 1 2014

MNC041-121-153-012330-
/O.CON.KMPX.SV.W.0102.000000T0000Z-140901T2330Z/
DOUGLAS MN-POPE MN-TODD MN-
607 PM CDT MON SEP 1 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TODD...NORTHEASTERN POPE AND SOUTHEASTERN DOUGLAS COUNTIES UNTIL 630
PM CDT...

AT 606 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ALEXANDRIA...
AND MOVING EAST AT 25 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...
LAKE OSAKIS...FORADA...NELSON...VILLARD...OSAKIS AND WEST UNION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4587 9547 4598 9508 4580 9492 4577 9514
      4571 9526
TIME...MOT...LOC 2307Z 291DEG 21KT 4586 9534

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

$$
526 
WWUS53 KMPX 012325
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
625 PM CDT MON SEP 1 2014

MNC041-121-153-012335-
/O.EXP.KMPX.SV.W.0102.000000T0000Z-140901T2330Z/
DOUGLAS MN-POPE MN-TODD MN-
625 PM CDT MON SEP 1 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TODD...
NORTHEASTERN POPE AND SOUTHEASTERN DOUGLAS COUNTIES WILL EXPIRE AT
630 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...SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4587 9547 4598 9508 4580 9492 4577 9514
      4571 9526
TIME...MOT...LOC 2325Z 291DEG 21KT 4582 9520

$$

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, 7:27 PM CDTSevere Thunderstorm WarningMPXMeeker, Wright48 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, 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.