Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 172, NWS Twin Cities, MN

July 21, 2016Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 21, 2016, 5:42 AM CDT for Morrison County, Todd County, Minnesota. It was in force for 35 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, 5:42 AM CDT (10:42 UTC)
Expired: Jul 21, 2016, 6:17 AM CDT
In force: 35 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 156 km from the middle of the area, began a volume at 10:44 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, 6:10 AM CDT	HAIL 1	Little Falls, 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 21, 12:32 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.7 hours before the alert went out and 155 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.

827 
WUUS53 KMPX 211042
SVRMPX
MNC097-153-211145-
/O.NEW.KMPX.SV.W.0172.160721T1042Z-160721T1145Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL TODD COUNTY IN CENTRAL MINNESOTA...
  SOUTHWESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 645 AM CDT

* AT 542 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  FLENSBURG...OR 12 MILES WEST OF LITTLE FALLS...MOVING EAST AT 20
  MPH.

  HAZARD...PING PONG BALL SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  RANDALL AROUND 555 AM CDT. 
  FLENSBURG AROUND 600 AM CDT. 
  LITTLE FALLS AROUND 620 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
SOBIESKI...LITTLE FALLS AIRPORT...CLOTHO AND CAMP RIPLEY JUNCTION.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 135 AND 155.
 U.S. HIGHWAY 71 BETWEEN MILE MARKERS 184 AND 198.

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 4597 9513 4614 9490 4606 9421 4584 9426
TIME...MOT...LOC 1042Z 286DEG 19KT 4602 9463 

HAIL...1.50IN
WIND...<50MPH
 
$$

SPD

2 follow-up statements

252 
WWUS53 KMPX 211108
SVSMPX

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

MNC153-211118-
/O.CAN.KMPX.SV.W.0172.000000T0000Z-160721T1145Z/
TODD MN-
608 AM CDT THU JUL 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TODD COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS
MOVED OUT OF THE WARNED AREA THEREFORE THE WARNING HAS BEEN
CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CDT FOR
CENTRAL MINNESOTA.

LAT...LON 4606 9421 4584 9426 4587 9452 4590 9464
      4606 9466 4611 9463
TIME...MOT...LOC 1108Z 270DEG 19KT 4598 9444 

$$

MNC097-211145-
/O.CON.KMPX.SV.W.0172.000000T0000Z-160721T1145Z/
MORRISON MN-
608 AM CDT THU JUL 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 AM CDT
FOR SOUTHWESTERN MORRISON COUNTY...

AT 608 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LITTLE
FALLS...
MOVING EAST AT 20 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  LITTLE FALLS AROUND 620 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
SOBIESKI...LITTLE FALLS AIRPORT AND CAMP RIPLEY JUNCTION.

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 4606 9421 4584 9426 4587 9452 4590 9464
      4606 9466 4611 9463
TIME...MOT...LOC 1108Z 270DEG 19KT 4598 9444 

HAIL...1.00IN
WIND...<50MPH
 
$$

SPD

796 
WWUS53 KMPX 211117
SVSMPX

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

MNC097-211127-
/O.CAN.KMPX.SV.W.0172.000000T0000Z-160721T1145Z/
MORRISON MN-
617 AM CDT THU JUL 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MORRISON COUNTY
IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE THE WARNING HAS
BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 AM CDT FOR
CENTRAL MINNESOTA.

LAT...LON 4606 9421 4584 9426 4587 9452 4590 9464
      4606 9466 4611 9463
TIME...MOT...LOC 1115Z 286DEG 19KT 4598 9437 

$$

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, 4:23 AM CDT	Severe Thunderstorm Warning	MPX	Douglas	37 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, 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.