Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 6, NWS Twin Cities, MN

May 7, 2014Blue Earth County, Martin County, Watonwan County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 2014, 6:22 PM CDT for Blue Earth County, Martin County, Watonwan County, Minnesota. It was in force for 53 min. 2 reports 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
May 7, 2014, 6:22 PM CDT (23:22 UTC)
Expired
May 7, 2014, 7:15 PM CDT
In force
53 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Blue Earth County, MN, Martin County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 123 km from the middle of the area, began a volume at 23:24 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
May 7, 7:04 PM CDTHAIL 0.88Madelia, MN
May 7, 7:04 PM CDTHAIL 12 Wsw Madelia, MN

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, 11.4 hours before the alert went out and 122 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 2014-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2014-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1223 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

499 
WUUS53 KMPX 072322
SVRMPX
MNC013-091-165-080015-
/O.NEW.KMPX.SV.W.0006.140507T2322Z-140508T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
622 PM CDT WED MAY 7 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTH CENTRAL MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...
  EASTERN WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 715 PM CDT

* AT 620 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 12 MILES SOUTH OF
  ST JAMES...AND MOVING NORTHEAST AT 35 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MADELIA AROUND 650 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE LEWISVILLE...ST JAMES AIRPORT
AND GROGAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4411 9465 4411 9421 4375 9434 4377 9472
TIME...MOT...LOC 2322Z 205DEG 30KT 4384 9454

HAIL...1.00IN
WIND...<50MPH

$$

JLT
6 follow-up statements
153 
WWUS53 KMPX 072330
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
630 PM CDT WED MAY 7 2014

MNC091-072340-
/O.CAN.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
MARTIN MN-
630 PM CDT WED MAY 7 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MARTIN COUNTY IS
CANCELLED...

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

LAT...LON 4385 9431 4385 9465 4411 9461 4411 9421
TIME...MOT...LOC 2330Z 205DEG 30KT 4390 9450

$$

MNC013-165-080015-
/O.CON.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-BLUE EARTH MN-
630 PM CDT WED MAY 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
BLUE EARTH AND EASTERN WATONWAN COUNTIES UNTIL 715 PM CDT...

AT 628 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTHEAST
OF ST JAMES...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MADELIA AROUND 650 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE ST JAMES AIRPORT AND GROGAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4385 9431 4385 9465 4411 9461 4411 9421
TIME...MOT...LOC 2330Z 205DEG 30KT 4390 9450

HAIL...1.00IN
WIND...<50MPH

$$

JLT
253 
WWUS53 KMPX 072341
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
641 PM CDT WED MAY 7 2014

MNC013-165-080015-
/O.CON.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-BLUE EARTH MN-
641 PM CDT WED MAY 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BLUE EARTH AND EASTERN WATONWAN COUNTIES UNTIL 715 PM CDT...

AT 639 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES SOUTH OF
MADELIA...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MADELIA AROUND 650 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4391 9429 4392 9457 4411 9450 4411 9421
TIME...MOT...LOC 2341Z 205DEG 30KT 4398 9445

HAIL...1.00IN
WIND...<50MPH

$$

JLT
015 
WWUS53 KMPX 072352
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
652 PM CDT WED MAY 7 2014

MNC013-165-080015-
/O.CON.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-BLUE EARTH MN-
652 PM CDT WED MAY 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BLUE EARTH AND EASTERN WATONWAN COUNTIES UNTIL 715 PM CDT...

AT 651 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MADELIA...AND
MOVING NORTHEAST AT 30 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
WATONWAN AND WEST CENTRAL BLUE EARTH COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4391 9429 4392 9457 4411 9450 4411 9421
TIME...MOT...LOC 2352Z 205DEG 27KT 4403 9442

HAIL...1.00IN
WIND...<50MPH

$$
703 
WWUS53 KMPX 072359
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
659 PM CDT WED MAY 7 2014

MNC013-165-080015-
/O.CON.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-BLUE EARTH MN-
659 PM CDT WED MAY 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
BLUE EARTH AND EASTERN WATONWAN COUNTIES UNTIL 715 PM CDT...

AT 658 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MADELIA...AND
MOVING NORTH AT 25 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
WATONWAN AND WEST CENTRAL BLUE EARTH COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4391 9429 4392 9457 4411 9450 4411 9421
TIME...MOT...LOC 2359Z 186DEG 20KT 4406 9443

HAIL...1.00IN
WIND...<50MPH

$$
911 
WWUS53 KMPX 080005
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
705 PM CDT WED MAY 7 2014

MNC013-080016-
/O.CAN.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
BLUE EARTH MN-
705 PM CDT WED MAY 7 2014

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BLUE EARTH COUNTY
IS CANCELLED...

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

LAT...LON 4400 9437 4401 9453 4411 9450 4411 9436
TIME...MOT...LOC 0006Z 186DEG 20KT 4410 9442

$$

MNC165-080015-
/O.CON.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-
705 PM CDT WED MAY 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
WATONWAN COUNTY UNTIL 715 PM CDT...

AT 703 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MADELIA...AND
MOVING NORTH AT 25 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE
TWIN CITIES.

&&

LAT...LON 4400 9437 4401 9453 4411 9450 4411 9436
TIME...MOT...LOC 0006Z 186DEG 20KT 4410 9442

HAIL...1.00IN
WIND...<50MPH

$$

JLT
084 
WWUS53 KMPX 080012
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
712 PM CDT WED MAY 7 2014

MNC165-080022-
/O.EXP.KMPX.SV.W.0006.000000T0000Z-140508T0015Z/
WATONWAN MN-
712 PM CDT WED MAY 7 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WATONWAN COUNTY
WILL EXPIRE AT 715 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.  HOWEVER...SMALL HAIL IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4400 9437 4401 9453 4411 9450 4411 9436
TIME...MOT...LOC 0012Z 186DEG 20KT 4413 9441

$$

JLT

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 2:59 AM CDTSpecial Weather StatementMPXMartin46 min
May 7, 4:18 AM CDTSevere Thunderstorm WarningMPXMartin27 min
May 7, 4:51 AM CDTSpecial Weather StatementMPXMartin24 min
May 7, 5:33 AM CDTSpecial Weather StatementMPXWaseca27 min
May 7, 6:04 AM CDTSevere Thunderstorm WarningMPXFreeborn, Steele41 min
May 7, 1:39 PM CDTSpecial Weather StatementMPXLac qui Parle36 min
May 7, 2:26 PM CDTSevere Thunderstorm WarningMPXStevens64 min
May 7, 6:09 PM CDTSpecial Weather StatementMPXFaribault, Martin, Watonwan36 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.