Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 4, NWS Twin Cities, MN

May 18, 2013Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 18, 2013, 8:27 PM CDT for Douglas County, Minnesota. It was in force for 48 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: May 18, 2013, 8:27 PM CDT (01:27 UTC)
Expired: May 18, 2013, 9:15 PM CDT
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 200 km from the middle of the area, began a volume at 01:27 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, 1.5 hours before the alert went out and 198 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: 504 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1502 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

207 
WUUS53 KMPX 190127
SVRMPX
MNC041-190215-
/O.NEW.KMPX.SV.W.0004.130519T0127Z-130519T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
827 PM CDT SAT MAY 18 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN DOUGLAS COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 915 PM CDT

* AT 824 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES NORTHEAST
  OF HOFFMAN...AND MOVING NORTH AT 10 MPH.

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

  SOURCE...TRAINED WEATHER SPOTTERS.

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

* LOCATIONS IMPACTED INCLUDE...
  BRANDON...GARFIELD AND EVANSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS THUNDERSTORM IS CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...SUCH AS IN AN
INTERIOR ROOM...A BATHROOM OR CLOSET...OR BASEMENT.

&&

LAT...LON 4595 9539 4576 9552 4583 9577 4593 9577
      4595 9579 4604 9576
TIME...MOT...LOC 0128Z 199DEG 9KT 4591 9566

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

$$

LRS

2 follow-up statements

729 
WWUS53 KMPX 190139
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
839 PM CDT SAT MAY 18 2013

MNC041-190215-
/O.CON.KMPX.SV.W.0004.000000T0000Z-130519T0215Z/
DOUGLAS MN-
839 PM CDT SAT MAY 18 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
DOUGLAS COUNTY UNTIL 915 PM CDT...

AT 836 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTHEAST
OF HOFFMAN...AND MOVING NORTH AT 10 MPH.

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

SOURCE...TRAINED WEATHER SPOTTERS CONTINUE TO MONITOR A WALL CLOUD   
         NORTH OF KENSINGTON WITH THIS STORM.

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

LOCATIONS IMPACTED INCLUDE...
GARFIELD...BRANDON AND EVANSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS THUNDERSTORM IS CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...SUCH AS IN AN
INTERIOR ROOM...A BATHROOM OR CLOSET...OR BASEMENT.

&&

LAT...LON 4595 9539 4581 9550 4586 9576 4593 9577
      4602 9577 4604 9576
TIME...MOT...LOC 0137Z 199DEG 9KT 4593 9565

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

$$

LRS

720 
WWUS53 KMPX 190148
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
848 PM CDT SAT MAY 18 2013

MNC041-190158-
/O.CAN.KMPX.SV.W.0004.000000T0000Z-130519T0215Z/
DOUGLAS MN-
848 PM CDT SAT MAY 18 2013

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL DOUGLAS COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED.

LAT...LON 4595 9539 4581 9550 4586 9576 4593 9577
      4602 9577 4604 9576
TIME...MOT...LOC 0148Z 199DEG 9KT 4596 9564

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 7:05 PM CDT	Special Weather Statement	MPX	Pope	25 min
May 18, 7:52 PM CDT	Areal Flood Advisory	MPX	Douglas	3 hr
May 19, 3:45 AM CDT	Special Weather Statement	MPX	Brown, Chippewa, Martin, Renville, Stevens, Swift and 1 more	60 min
May 19, 4:23 AM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Martin, Watonwan	67 min
May 19, 5:08 AM CDT	Special Weather Statement	MPX	McLeod, Nicollet, Sibley	52 min
May 19, 6:26 AM CDT	Special Weather Statement	MPX	Anoka, Hennepin, Ramsey	49 min
May 19, 12:20 PM CDT	River Flood Watch	MPX	Todd	27 hr
May 19, 12:20 PM CDT	River Flood Watch	MPX	Carver	27 hr
May 19, 3:33 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Ramsey, Washington	42 min
May 19, 3:43 PM CDT	Areal Flood Advisory	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	3 hr
May 19, 4:15 PM CDT	Special Weather Statement	MPX	Dakota, Scott	30 min
May 19, 4:20 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Rice, Scott	40 min
May 19, 4:27 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	33 min
May 19, 4:50 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	40 min
May 19, 4:54 PM CDT	Severe Thunderstorm Warning	MPX	Washington	36 min
May 19, 5:00 PM CDT	Special Weather Statement	MPX	Anoka, Hennepin, Ramsey	30 min
May 19, 5:23 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	37 min
May 19, 5:55 PM CDT	Special Weather Statement	MPX	Chisago, Isanti	35 min
May 19, 6:00 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	15 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.