Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 168, NWS Twin Cities, MN

July 21, 2016Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 21, 2016, 4:23 AM CDT for Douglas County, Minnesota. It was in force for 37 min. 1 report 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 21, 2016, 4:23 AM CDT (09:23 UTC)
Expired: Jul 21, 2016, 5:00 AM CDT
In force: 37 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 196 km from the middle of the area, began a volume at 09:22 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 21, 4:25 AM CDT	TSTM WND DMG	Carlos, MN	LOTS OF TREE BRANCHES DOWN. TIME ESTIMATED. .

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.4 hours before the alert went out and 194 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: 3666 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1087 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 373 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 22.0

Open this sounding in Storm Lab

The text

As transmitted.

978 
WUUS53 KMPX 210923
SVRMPX
MNC041-211000-
/O.NEW.KMPX.SV.W.0168.160721T0923Z-160721T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
423 AM CDT THU JUL 21 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 500 AM CDT

* AT 423 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  MILLERVILLE... OR 13 MILES NORTHWEST OF ALEXANDRIA...MOVING EAST
  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. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  CARLOS AROUND 455 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE BELLE
RIVER...MILLERVILLE...LEAF VALLEY AND MILTONA.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 86 AND
89.
 
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 4611 9518 4594 9515 4596 9569 4609 9568
      4611 9556
TIME...MOT...LOC 0923Z 267DEG 22KT 4603 9557 

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

SPD

2 follow-up statements

097 
WWUS53 KMPX 210940
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
440 AM CDT THU JUL 21 2016

MNC041-211000-
/O.CON.KMPX.SV.W.0168.000000T0000Z-160721T1000Z/
DOUGLAS MN-
440 AM CDT THU JUL 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR NORTHEASTERN DOUGLAS COUNTY...

AT 440 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER LEAF
VALLEY...OR 9 MILES NORTH OF ALEXANDRIA...MOVING EAST 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. 

THIS SEVERE STORM WILL BE NEAR...
  CARLOS AROUND 455 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE BELLE
RIVER...LEAF VALLEY AND MILTONA.

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 4611 9518 4594 9515 4597 9553 4611 9551
TIME...MOT...LOC 0940Z 270DEG 22KT 4604 9542 

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

SPD

466 
WWUS53 KMPX 210958
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
458 AM CDT THU JUL 21 2016

MNC041-211007-
/O.EXP.KMPX.SV.W.0168.000000T0000Z-160721T1000Z/
DOUGLAS MN-
458 AM CDT THU JUL 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DOUGLAS COUNTY
WILL EXPIRE AT 500 AM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE THE WARNING WILL
BE ALLOWED TO EXPIRE.

LAT...LON 4611 9518 4594 9515 4597 9553 4611 9551
TIME...MOT...LOC 0954Z 267DEG 22KT 4604 9542 

$$

SPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 1:40 AM CDT	Special Weather Statement	MPX	Douglas, Todd	65 min
Jul 21, 1:51 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Morrison, Todd	39 min
Jul 21, 2:19 AM CDT	Special Weather Statement	MPX	Mille Lacs, Morrison, Pope, Stearns, Stevens	41 min
Jul 21, 2:45 AM CDT	Special Weather Statement	MPX	Benton, Kanabec, Kandiyohi, Mille Lacs, Sherburne, Stearns and 2 more	45 min
Jul 21, 3:16 AM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Kandiyohi, Meeker and 2 more	44 min
Jul 21, 3:39 AM CDT	Special Weather Statement	MPX	Anoka, Carver, Chisago, Hennepin, McLeod, Ramsey and 4 more	66 min
Jul 21, 3:47 AM CDT	Special Weather Statement	MPX	Douglas	43 min
Jul 21, 3:51 AM CDT	Special Weather Statement	MPX	Todd	39 min
Jul 21, 4:27 AM CDT	Severe Thunderstorm Warning	MPX	Todd	33 min
Jul 21, 4:34 AM CDT	Special Weather Statement	MPX	Dakota, Le Sueur, Nicollet, Rice, Scott	56 min
Jul 21, 5:00 AM CDT	Special Weather Statement	MPX	Todd	45 min
Jul 21, 5:15 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Morrison, Todd	30 min
Jul 21, 5:25 AM CDT	Special Weather Statement	MPX	Goodhue	65 min
Jul 21, 5:42 AM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	35 min
Jul 21, 6:26 AM CDT	Special Weather Statement	MPX	Benton	34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2016 Every severe thunderstorm warning in 2016

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.