Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 30, NWS Twin Cities, MN

June 17, 2015Freeborn County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2015, 3:22 PM CDT for Freeborn County, Minnesota. It was in force for 38 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
Jun 17, 2015, 3:22 PM CDT (20:22 UTC)
Expired
Jun 17, 2015, 4:00 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 121 km from the middle of the area, began a volume at 20:25 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.4 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 2015-06-17Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2015-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 square meters per square second.1939587897Sfc1 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
3208 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
238 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.

364 
WUUS53 KMPX 172022
SVRMPX
MNC047-172100-
/O.NEW.KMPX.SV.W.0030.150617T2022Z-150617T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
322 PM CDT WED JUN 17 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 400 PM CDT

* AT 321 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER GENEVA...OR
  14 MILES NORTHEAST OF ALBERT LEA...MOVING SOUTHEAST AT 25 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...LAW ENFORCEMENT REPORTED TREES DOWN NEAR ELLENDALE. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  HOLLANDALE AROUND 335 PM CDT.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 21 AND 25.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4382 9337 4385 9335 4385 9305 4369 9305
      4369 9306
TIME...MOT...LOC 2021Z 294DEG 23KT 4384 9325 

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

JRB
3 follow-up statements
435 
WWUS53 KMPX 172036
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
336 PM CDT WED JUN 17 2015

MNC047-172100-
/O.CON.KMPX.SV.W.0030.000000T0000Z-150617T2100Z/
FREEBORN MN-
336 PM CDT WED JUN 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHEASTERN FREEBORN COUNTY...

AT 335 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HOLLANDALE...
OR 13 MILES NORTHEAST OF ALBERT LEA...MOVING SOUTHEAST AT 25 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...LAW ENFORCEMENT EARLIER REPORTED TREES DOWN NEAR ELLENDALE. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN FREEBORN COUNTY.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 21 AND 25.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4380 9332 4385 9331 4385 9305 4369 9305
      4369 9306
TIME...MOT...LOC 2035Z 294DEG 22KT 4380 9319 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

JRB
333 
WWUS53 KMPX 172047
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
347 PM CDT WED JUN 17 2015

MNC047-172100-
/O.CON.KMPX.SV.W.0030.000000T0000Z-150617T2100Z/
FREEBORN MN-
347 PM CDT WED JUN 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHEASTERN FREEBORN COUNTY...

AT 347 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOLLANDALE...
OR 10 MILES NORTHWEST OF AUSTIN...MOVING SOUTHEAST 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...
HOLLANDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 
AREAS OF FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED 
ROADWAYS.

&&

LAT...LON 4377 9325 4385 9325 4385 9305 4369 9305
      4369 9306
TIME...MOT...LOC 2047Z 304DEG 21KT 4378 9312 

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

JRB
717 
WWUS53 KMPX 172056
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
356 PM CDT WED JUN 17 2015

MNC047-172106-
/O.EXP.KMPX.SV.W.0030.000000T0000Z-150617T2100Z/
FREEBORN MN-
356 PM CDT WED JUN 17 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FREEBORN COUNTY
WILL EXPIRE AT 400 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO
EXPIRE.

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

LAT...LON 4377 9325 4385 9325 4385 9305 4369 9305
      4369 9306
TIME...MOT...LOC 2054Z 294DEG 23KT 4378 9312 

$$

JRB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 1:15 PM CDTSpecial Weather StatementMPXSteele45 min
Jun 17, 2:13 PM CDTSpecial Weather StatementMPXWaseca47 min
Jun 17, 2:30 PM CDTTornado WarningMPXWaseca30 min
Jun 17, 2:38 PM CDTSevere Thunderstorm WarningMPXSteele67 min
Jun 17, 4:23 PM CDTSpecial Weather StatementMPXFreeborn22 min
Jun 17, 4:37 PM CDTSevere Thunderstorm WarningMPXFreeborn53 min
Jun 17, 4:50 PM CDTSpecial Weather StatementMPXFreeborn25 min
Jun 17, 5:19 PM CDTSpecial Weather StatementMPXFreeborn56 min
Jun 17, 5:56 PM CDTFlash Flood WarningMPXFreeborn3 hr
Jun 17, 6:07 PM CDTSpecial Weather StatementMPXFreeborn53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015Every severe thunderstorm warning in 2015

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.