Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 1, NWS Twin Cities, MN

April 1, 2015Le Sueur County, Scott County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Apr 1, 2015, 7:47 PM CDT for Le Sueur County, Scott County, Sibley County, Minnesota. It was in force for 43 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: Apr 1, 2015, 7:47 PM CDT (00:47 UTC)
Expired: Apr 1, 2015, 8:30 PM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Le Sueur County, MN, Scott County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 38 km from the middle of the area, began a volume at 00:49 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 00:00Z, 0.8 hours before the alert went out and 37 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 13 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 2801 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 292 m²/s²
0-3 km storm-relative helicity: 411 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.

338 
WUUS53 KMPX 020047
SVRMPX
MNC079-139-143-020130-
/O.NEW.KMPX.SV.W.0001.150402T0047Z-150402T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
747 PM CDT WED APR 1 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...
  NORTH CENTRAL LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 830 PM CDT

* AT 746 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR GREEN ISLE TO RUSH RIVER...MOVING EAST AT 25
  MPH.

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

  SOURCE...RADAR INDICATED. 

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

* SEVERE THUNDERSTORMS WILL BE NEAR...
  LE SUEUR AND HENDERSON AROUND 805 PM CDT.
  BELLE PLAINE AROUND 810 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE NEW
ROME AND RUSH RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4463 9362 4446 9373 4447 9417 4463 9402
TIME...MOT...LOC 0046Z 264DEG 22KT 4461 9397 4448 9407 

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

$$

LS

5 follow-up statements

491 
WWUS53 KMPX 020057
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
757 PM CDT WED APR 1 2015

MNC079-139-143-020130-
/O.CON.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SCOTT MN-SIBLEY MN-LE SUEUR MN-
757 PM CDT WED APR 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN SCOTT...SOUTHEASTERN SIBLEY AND NORTH CENTRAL LE
SUEUR COUNTIES...

AT 756 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BELLE PLAINE TO NEAR LE SUEUR...MOVING EAST AT 30 MPH.

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

SOURCE...RADAR INDICATED. 

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

THESE SEVERE STORMS WILL BE NEAR...
  BELLE PLAINE AROUND 800 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE NEW
ROME AND RUSH RIVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4463 9362 4446 9373 4447 9417 4463 9402
TIME...MOT...LOC 0056Z 264DEG 25KT 4461 9377 4449 9387 

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

$$

LS

101 
WWUS53 KMPX 020059
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
759 PM CDT WED APR 1 2015

MNC079-139-143-020130-
/O.CON.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SCOTT MN-SIBLEY MN-LE SUEUR MN-
759 PM CDT WED APR 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN SCOTT...SOUTHEASTERN SIBLEY AND NORTH CENTRAL LE
SUEUR COUNTIES...

AT 759 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BELLE PLAINE TO NEAR LE SUEUR...MOVING EAST AT 30 MPH.

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

SOURCE...RADAR INDICATED. 

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

THESE SEVERE STORMS WILL BE NEAR...
  BELLE PLAINE AROUND 805 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4463 9362 4446 9373 4447 9404 4462 9398
TIME...MOT...LOC 0059Z 264DEG 25KT 4461 9377 4449 9387 

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

$$

LS

211 
WWUS53 KMPX 020110
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
810 PM CDT WED APR 1 2015

MNC143-020119-
/O.CAN.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SIBLEY MN-
810 PM CDT WED APR 1 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SIBLEY COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4463 9362 4446 9373 4447 9386 4462 9382
TIME...MOT...LOC 0109Z 264DEG 22KT 4461 9371 4449 9381 

$$

MNC079-139-020130-
/O.CON.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SCOTT MN-LE SUEUR MN-
810 PM CDT WED APR 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN SCOTT AND NORTH CENTRAL LE SUEUR COUNTIES...

AT 809 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR BELLE PLAINE TO NEAR ST THOMAS...MOVING EAST AT
25 MPH.

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

SOURCE...RADAR INDICATED. 

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

THESE SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHWESTERN SCOTT AND NORTH CENTRAL LE SUEUR COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4463 9362 4446 9373 4447 9386 4462 9382
TIME...MOT...LOC 0109Z 264DEG 22KT 4461 9371 4449 9381 

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

$$

LS

014 
WWUS53 KMPX 020118
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
818 PM CDT WED APR 1 2015

MNC079-020128-
/O.CAN.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
LE SUEUR MN-
818 PM CDT WED APR 1 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LE SUEUR COUNTY
IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4462 9375 4463 9362 4454 9368 4455 9376
      4455 9377
TIME...MOT...LOC 0118Z 254DEG 30KT 4461 9367 4455 9370 

$$

MNC139-020130-
/O.CON.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SCOTT MN-
818 PM CDT WED APR 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTH CENTRAL SCOTT COUNTY...

AT 818 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR ST BENEDICT TO NEAR HEIDELBERG...MOVING EAST AT
35 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
BELLE PLAINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4462 9375 4463 9362 4454 9368 4455 9376
      4455 9377
TIME...MOT...LOC 0118Z 254DEG 30KT 4461 9367 4455 9370 

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

$$

LS

561 
WWUS53 KMPX 020121
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
821 PM CDT WED APR 1 2015

MNC139-020131-
/O.EXP.KMPX.SV.W.0001.000000T0000Z-150402T0130Z/
SCOTT MN-
821 PM CDT WED APR 1 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SCOTT COUNTY
WILL EXPIRE AT 830 PM CDT...
    
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
AREA. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4462 9375 4463 9362 4454 9368 4455 9376
      4455 9377
TIME...MOT...LOC 0118Z 264DEG 22KT 4461 9367 4455 9370 

$$

LS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 7:33 PM CDT	Special Weather Statement	MPX	Le Sueur, Scott	42 min
Apr 1, 8:09 PM CDT	Special Weather Statement	MPX	Dakota, Scott	36 min
Apr 2, 10:21 AM CDT	Wind Advisory	MPX	Anoka, Benton, Chippewa, Chisago, Douglas, Isanti and 17 more	8 hr
Apr 2, 10:39 AM CDT	Red Flag Warning	MPX	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 26 more	8 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015 Every 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.