Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 44, NWS Twin Cities, MN

June 17, 2014Blue Earth County, Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2014, 11:59 PM CDT for Blue Earth County, Le Sueur County, Nicollet County, Minnesota. It was in force for 46 min. 3 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
Jun 17, 2014, 11:59 PM CDT (04:59 UTC)
Expired
Jun 18, 2014, 12:45 AM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

Counties Blue Earth County, MN, Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 81 km from the middle of the area, began a volume at 05:02 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
Jun 18, 12:09 AM CDTHAIL 0.88Mankato, MNOCCURRED OVER WESTERN PORTION OF CITY ALONG HIGHWAY 14.
Jun 18, 12:22 AM CDTHAIL 0.75Mankato, MNOCCURRED OVER SOUTH MANKATO. RELAYED BY BROADCAST MEDIA.
Jun 18, 12:22 AM CDTHAIL 1.25Mankato, MNOCCURRED OVER SOUTH SIDE OF CITY. RELAYED BY BROADCAST MEDIA.

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
Jun 17, 11:39 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.0 hours before the alert went out and 80 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 2014-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 901 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 2014-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 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
901 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

136 
WUUS53 KMPX 180459
SVRMPX
MNC013-079-103-180545-
/O.NEW.KMPX.SV.W.0044.140618T0459Z-140618T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1159 PM CDT TUE JUN 17 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTH CENTRAL LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHEASTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 1245 AM CDT

* AT 1157 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MANKATO...
  AND MOVING NORTHEAST AT 10 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  MANKATO...NORTH MANKATO...EAGLE LAKE...MANKATO AIRPORT...KASOTA...
  MADISON LAKE AND LAKE JEFFERSON.

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.

&&

LAT...LON 4431 9409 4427 9373 4403 9396 4408 9424
TIME...MOT...LOC 0459Z 206DEG 8KT 4414 9401

HAIL...1.25IN
WIND...<50MPH

$$

BORGHOFF
2 follow-up statements
199 
WWUS53 KMPX 180525
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1225 AM CDT WED JUN 18 2014

MNC013-079-103-180545-
/O.CON.KMPX.SV.W.0044.000000T0000Z-140618T0545Z/
LE SUEUR MN-NICOLLET MN-BLUE EARTH MN-
1225 AM CDT WED JUN 18 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN BLUE
EARTH...SOUTHEASTERN NICOLLET AND SOUTH CENTRAL LE SUEUR COUNTIES
UNTIL 1245 AM CDT...

AT 1223 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MANKATO...AND
MOVING NORTHEAST AT 10 MPH.

HAZARD...HALF DOLLAR SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
MANKATO...NORTH MANKATO...MANKATO AIRPORT...EAGLE LAKE AND MADISON
LAKE.

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.

&&

LAT...LON 4427 9411 4427 9373 4403 9396 4408 9424
TIME...MOT...LOC 0526Z 208DEG 8KT 4415 9399

HAIL...1.25IN
WIND...<50MPH

$$

BORGHOFF
984 
WWUS53 KMPX 180547
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1247 AM CDT WED JUN 18 2014

MNC013-079-103-180557-
/O.EXP.KMPX.SV.W.0044.000000T0000Z-140618T0545Z/
LE SUEUR MN-NICOLLET MN-BLUE EARTH MN-
1247 AM CDT WED JUN 18 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BLUE EARTH...
SOUTHEASTERN NICOLLET AND SOUTH CENTRAL LE SUEUR COUNTIES HAS
EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4427 9411 4427 9373 4403 9396 4408 9424
TIME...MOT...LOC 0525Z 208DEG 8KT 4415 9399

$$

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 10:35 PM CDTRiver Flood WarningMPXGoodhue55 hr
Jun 17, 10:48 PM CDTSpecial Weather StatementMPXRamsey42 min
Jun 17, 10:54 PM CDTSpecial Weather StatementMPXBlue Earth51 min
Jun 17, 11:12 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet48 min
Jun 17, 11:35 PM CDTSpecial Weather StatementMPXWatonwan40 min
Jun 18, 12:12 AM CDTFlash Flood WarningMPXBlue Earth, Nicollet4 hr
Jun 18, 12:50 AM CDTSevere Thunderstorm WarningMPXRice55 min
Jun 18, 2:42 AM CDTFlash Flood WarningMPXBrown4 hr
Jun 18, 3:02 AM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn43 min
Jun 18, 7:11 AM CDTAreal Flood WarningMPXBlue Earth, Brown, Le Sueur, Nicollet, Waseca4 days
Jun 18, 1:33 PM CDTRiver Flood WarningMPXBlue Earth, Nicollet9 days
Jun 18, 1:33 PM CDTRiver Flood WarningMPXLe Sueur, Scott, Sibley16 days
Jun 18, 1:33 PM CDTRiver Flood WarningMPXCarver, Scott19 days
Jun 18, 1:33 PM CDTRiver Flood WarningMPXDakota, Hennepin, Scott21 days
Jun 18, 2:41 PM CDTFlash Flood WatchMPXAnoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 25 more29 hr
Jun 18, 3:47 PM CDTAreal Flood WarningMPXLe Sueur, Rice, Steele, Waseca4 days

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.