Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 67, NWS Twin Cities, MN

July 12, 2015Benton County, Morrison County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 12, 2015, 7:40 PM CDT for Benton County, Morrison County, Stearns County, Minnesota. It was in force for 50 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: Jul 12, 2015, 7:40 PM CDT (00:40 UTC)
Expired: Jul 12, 2015, 8:30 PM CDT
In force: 50 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Benton County, MN, Morrison County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 143 km from the middle of the area, began a volume at 00:42 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

Time	Report	Where	Remark
Jul 12, 8:20 PM CDT	TSTM WND GST 81	Bowlus, MN
Jul 12, 8:20 PM CDT	TSTM WND GST 81	Bowlus, MN

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.

Issued	Product	Office	Lasted
Jul 12, 5:28 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 142 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: 3598 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 1040 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 12.7

Open this sounding in Storm Lab

The text

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

609 
WUUS53 KMPX 130040
SVRMPX
MNC009-097-145-130130-
/O.NEW.KMPX.SV.W.0067.150713T0040Z-150713T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
740 PM CDT SUN JUL 12 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN STEARNS COUNTY IN CENTRAL MINNESOTA...
  MORRISON COUNTY IN CENTRAL MINNESOTA...
  BENTON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 830 PM CDT

* AT 740 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LITTLE
  FALLS...MOVING SOUTHEAST 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...
  LITTLE FALLS...SARTELL...FOLEY...ALBANY...PIERZ...ROYALTON...
  HOLDINGFORD...RANDALL...UPSALA...SWANVILLE...BOWLUS AND FLENSBURG.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 143 AND
144.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR EAST CENTRAL
MINNESOTA.

LAT...LON 4622 9440 4618 9437 4616 9437 4616 9390
      4615 9381 4564 9377 4564 9466 4599 9464
TIME...MOT...LOC 0040Z 303DEG 26KT 4600 9446 

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

DWE

1 follow-up statement

398 
WWUS53 KMPX 130116
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
816 PM CDT SUN JUL 12 2015

MNC009-097-145-130130-
/O.CON.KMPX.SV.W.0067.000000T0000Z-150713T0130Z/
STEARNS MN-MORRISON MN-BENTON MN-
816 PM CDT SUN JUL 12 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR NORTHEASTERN STEARNS...MORRISON AND BENTON COUNTIES...

AT 816 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ROYALTON...OR
8 MILES SOUTHEAST OF LITTLE FALLS...MOVING SOUTHEAST AT 20 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...
LITTLE FALLS...SARTELL...FOLEY...ALBANY...PIERZ...ROYALTON...
HOLDINGFORD...UPSALA...BOWLUS...FLENSBURG...LASTRUP AND RICE.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 143 AND
144.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR EAST CENTRAL
MINNESOTA.

LAT...LON 4601 9449 4616 9437 4616 9390 4615 9381
      4564 9377 4564 9466 4594 9463
TIME...MOT...LOC 0116Z 302DEG 18KT 4589 9423 

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

DWE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 7:00 PM CDT	Tornado Warning	MPX	Morrison, Todd	45 min
Jul 12, 7:09 PM CDT	Tornado Warning	MPX	Pope, Stevens	36 min
Jul 12, 7:18 PM CDT	Tornado Warning	MPX	Morrison, Todd	42 min
Jul 12, 7:20 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stearns, Todd	70 min
Jul 12, 7:30 PM CDT	Special Weather Statement	MPX	Douglas	3 hr
Jul 12, 7:39 PM CDT	Tornado Warning	MPX	Douglas	30 min
Jul 12, 7:42 PM CDT	Tornado Warning	MPX	Pope	48 min
Jul 12, 8:16 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	44 min
Jul 12, 8:24 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Sherburne	51 min
Jul 12, 8:27 PM CDT	Severe Thunderstorm Warning	MPX	Pope	33 min
Jul 12, 8:32 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	28 min
Jul 12, 8:40 PM CDT	Special Weather Statement	MPX	Douglas	35 min
Jul 12, 8:54 PM CDT	Severe Thunderstorm Warning	MPX	Isanti, Kanabec, Mille Lacs	51 min
Jul 12, 8:54 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Stearns, Wright	81 min
Jul 12, 8:59 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns	46 min
Jul 12, 8:59 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Benton, Isanti, Sherburne	61 min
Jul 12, 9:03 PM CDT	Special Weather Statement	MPX	Chippewa	27 min
Jul 12, 9:24 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	51 min
Jul 12, 9:31 PM CDT	Special Weather Statement	MPX	Kandiyohi	29 min
Jul 12, 9:48 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Wright	57 min
Jul 12, 9:48 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti, Ramsey, Washington	57 min
Jul 12, 10:32 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Stearns, Wright	26 min
Jul 12, 10:45 PM CDT	Special Weather Statement	MPX	Carver, Hennepin, McLeod, Ramsey, Washington, Wright	60 min
Jul 12, 10:55 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Wright	35 min
Jul 12, 11:18 PM CDT	Special Weather Statement	MPX	Douglas	57 min
Jul 12, 11:18 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	19 min
Jul 12, 11:40 PM CDT	Special Weather Statement	MPX	Dakota, Goodhue, Le Sueur, Rice, Scott	50 min
Jul 13, 12:29 AM CDT	Special Weather Statement	MPX	Todd	46 min
Jul 13, 12:41 AM CDT	Special Weather Statement	MPX	Goodhue	64 min
Jul 13, 1:23 AM CDT	Special Weather Statement	MPX	Sherburne	52 min
Jul 13, 2:47 AM CDT	Special Weather Statement	MPX	Washington	58 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.