Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 208, NWS Twin Cities, MN

August 18, 2016Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 2016, 1:43 PM CDT for Redwood County, Minnesota. It was in force for 47 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
Aug 18, 2016, 1:43 PM CDT (18:43 UTC)
Expired
Aug 18, 2016, 2:30 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Redwood County, MN

The radar

The Minneapolis radar (KMPX), 133 km from the middle of the area, began a volume at 18:47 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 12:00Z, 6.7 hours before the alert went out and 130 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2016-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2016-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
133 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1165 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

017 
WUUS53 KMPX 181843
SVRMPX
MNC127-181930-
/O.NEW.KMPX.SV.W.0208.160818T1843Z-160818T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
143 PM CDT THU AUG 18 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL REDWOOD COUNTY IN SOUTHWESTERN MINNESOTA...

* UNTIL 230 PM CDT

* AT 142 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  SEAFORTH...OR 9 MILES SOUTHWEST OF REDWOOD FALLS...MOVING EAST AT
  35 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...
  REDWOOD FALLS...MORGAN...WABASSO...CLEMENTS...SEAFORTH...
  NORTH REDWOOD AND REDWOOD FALLS AIRPORT.

THIS INCLUDES U.S. HIGHWAY 71 BETWEEN MILE MARKERS 61 AND 75.
 
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 4454 9538 4454 9536 4456 9535 4459 9510
      4457 9509 4457 9507 4456 9506 4451 9487
      4433 9487 4434 9540
TIME...MOT...LOC 1842Z 268DEG 31KT 4447 9527 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
918 
WWUS53 KMPX 181903
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
203 PM CDT THU AUG 18 2016

MNC127-181930-
/O.CON.KMPX.SV.W.0208.000000T0000Z-160818T1930Z/
REDWOOD MN-
203 PM CDT THU AUG 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR EAST CENTRAL REDWOOD COUNTY...

AT 203 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CLEMENTS...OR
10 MILES SOUTH OF REDWOOD FALLS...MOVING EAST AT 25 MPH.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
REDWOOD FALLS...MORGAN...WABASSO AND CLEMENTS. 

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 4440 9535 4447 9524 4453 9520 4454 9514
      4455 9502 4451 9487 4433 9487 4434 9540
TIME...MOT...LOC 1903Z 277DEG 24KT 4440 9513 

HAIL...1.25IN
WIND...60MPH
 
$$
753 
WWUS53 KMPX 181914
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
214 PM CDT THU AUG 18 2016

MNC127-181930-
/O.CON.KMPX.SV.W.0208.000000T0000Z-160818T1930Z/
REDWOOD MN-
214 PM CDT THU AUG 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR EAST CENTRAL REDWOOD COUNTY...

AT 214 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER CLEMENTS...OR
13 MILES SOUTH OF REDWOOD FALLS...MOVING EAST AT 30 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 70 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
         CONSIDERABLE TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO 
         MOBILE HOMES...ROOFS...AND OUTBUILDINGS. 

THIS SEVERE STORM WILL BE NEAR...
  MORGAN AROUND 225 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
CLEMENTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4442 9523 4445 9517 4447 9514 4449 9508
      4450 9501 4451 9487 4433 9487 4434 9528
TIME...MOT...LOC 1914Z 277DEG 25KT 4435 9505 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...70MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 10:25 AM CDTRiver Flood WarningMPXHennepin, Wright7 days
Aug 18, 1:18 PM CDTSpecial Weather StatementMPXRedwood57 min
Aug 18, 1:56 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood34 min
Aug 18, 2:06 PM CDTSpecial Weather StatementMPXRenville39 min
Aug 18, 2:18 PM CDTSevere Thunderstorm WarningMPXBrown, Nicollet, Redwood57 min
Aug 18, 2:26 PM CDTSpecial Weather StatementMPXBrown49 min
Aug 18, 2:59 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Le Sueur, Nicollet61 min
Aug 18, 3:02 PM CDTSpecial Weather StatementMPXRice58 min
Aug 18, 3:41 PM CDTSpecial Weather StatementMPXSteele, Waseca64 min
Aug 18, 3:47 PM CDTSpecial Weather StatementMPXFreeborn58 min
Aug 18, 3:57 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn, Steele, Waseca63 min
Aug 18, 4:09 PM CDTSevere Thunderstorm WarningMPXSteele, Waseca36 min
Aug 18, 4:45 PM CDTSevere Thunderstorm WarningMPXFreeborn30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2016Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.