Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 83, NWS Twin Cities, MN

July 12, 2015Dakota County, Scott County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 12, 2015, 11:18 PM CDT for Dakota County, Scott County, Minnesota. It was in force for 19 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: Jul 12, 2015, 11:18 PM CDT (04:18 UTC)
Expired: Jul 12, 2015, 11:37 PM CDT
In force: 19 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Dakota County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 28 km from the middle of the area, began a volume at 04:18 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 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, 9:59 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.3 hours before the alert went out and 30 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.

944 
WUUS53 KMPX 130418
SVRMPX
MNC037-139-130515-
/O.NEW.KMPX.SV.W.0083.150713T0418Z-150713T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1118 PM CDT SUN JUL 12 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  SCOTT COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1215 AM CDT

* AT 1118 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  CHANHASSEN...OR 16 MILES WEST OF MINNEAPOLIS...MOVING SOUTHEAST AT
  20 MPH.

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

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  EDEN PRAIRIE AROUND 1125 PM CDT.
  CARVER AROUND 1130 PM CDT.
  SHAKOPEE AROUND 1140 PM CDT.
  SAVAGE AND PRIOR LAKE AROUND 1145 PM CDT.
  BURNSVILLE AROUND 1150 PM CDT.
  ELKO NEW MARKET AROUND 1215 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CREDIT
RIVER...MARYSTOWN...RANDOLPH...ST BENEDICT...LAKEVILLE AIRPORT...
HELENA...CASTLE ROCK...LAKE BYLLESBY AND FORT SNELLING STATE PARK.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 75 AND 88.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4454 9328 4455 9370 4467 9370 4471 9362
      4476 9362 4480 9357 4481 9343 4478 9336
      4483 9321 4451 9294 4452 9304 4447 9305
      4447 9328
TIME...MOT...LOC 0418Z 330DEG 18KT 4487 9358 

HAIL...0.88IN
WIND...60MPH
 
$$

JRB

1 follow-up statement

717 
WWUS53 KMPX 130437
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1137 PM CDT SUN JUL 12 2015

MNC037-139-130447-
/O.CAN.KMPX.SV.W.0083.000000T0000Z-150713T0515Z/
DAKOTA MN-SCOTT MN-
1137 PM CDT SUN JUL 12 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DAKOTA AND SCOTT
COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER HEAVY RAIN IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT FOR
SOUTHEASTERN MINNESOTA.

LAT...LON 4454 9328 4455 9370 4467 9370 4471 9362
      4476 9362 4480 9357 4481 9343 4478 9336
      4483 9321 4451 9294 4452 9304 4447 9305
      4447 9328
TIME...MOT...LOC 0436Z 330DEG 18KT 4479 9351 

$$

JRB

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, 7:40 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Stearns	50 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, 11:40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.