Alert archive / Minnesota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 211, NWS Twin Cities, MN

August 18, 2016Blue Earth County, Le Sueur County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 18, 2016, 2:59 PM CDT for Blue Earth County, Le Sueur County, Nicollet County, Minnesota. It was in force for 61 min. 3 reports 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
Aug 18, 2016, 2:59 PM CDT (19:59 UTC)
Expired
Aug 18, 2016, 4:00 PM CDT
In force
61 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Blue Earth County, MN, Le Sueur County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 88 km from the middle of the area, began a volume at 20:02 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

TimeReportWhereRemark
Aug 18, 3:20 PM CDTTSTM WND DMGLake Crystal, MNBRANCHES DOWN AND POWER OUT.
Aug 18, 3:20 PM CDTTSTM WND GST 643 Ne Madelia, MNMESONET STATION MADELIA 3 ENE /MN045/ ROAD SIDE EQUIPMENT...STILL AWAITING COLLATERAL DAMAGE REPORTS FOR CONFORMATION OF THIS EVENT.
Aug 18, 3:30 PM CDTTSTM WND DMG1 S Mankato, MNLARGE TREE DOWN IN FRONT YARD. VIA SOCIAL MEDIA.

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.

IssuedProductOfficeLasted
Aug 18, 2:46 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.0 hours before the alert went out and 87 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.

210 
WUUS53 KMPX 181959
SVRMPX
MNC013-079-103-182100-
/O.NEW.KMPX.SV.W.0211.160818T1959Z-160818T2100Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHEASTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHWESTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 400 PM CDT

* AT 258 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SEARLES...OR
  NEAR NEW ULM...MOVING EAST AT 40 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...
  MANKATO...NORTH MANKATO...ST. PETER...LAKE CRYSTAL...EAGLE LAKE...
  NICOLLET...MADISON LAKE...ST. CLAIR...KASOTA...COURTLAND...
  PEMBERTON AND CLEVELAND.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 U.S. HIGHWAY 14 BETWEEN MILE MARKERS 110 AND 143.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 39 AND 68.

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 4406 9437 4437 9437 4434 9376 4398 9377
TIME...MOT...LOC 1958Z 278DEG 34KT 4422 9443 

HAIL...1.25IN
WIND...60MPH
 
$$
2 follow-up statements
746 
WWUS53 KMPX 182023
SVSMPX

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

MNC013-079-103-182100-
/O.CON.KMPX.SV.W.0211.000000T0000Z-160818T2100Z/
BLUE EARTH MN-NICOLLET MN-LE SUEUR MN-
323 PM CDT THU AUG 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHERN BLUE EARTH...SOUTHEASTERN NICOLLET AND SOUTHWESTERN LE
SUEUR COUNTIES...

AT 322 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR JUDSON...OR
NEAR MANKATO...MOVING EAST AT 40 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...
MANKATO...NORTH MANKATO...ST. PETER...LAKE CRYSTAL...EAGLE LAKE...
NICOLLET...MADISON LAKE...ST. CLAIR...KASOTA...COURTLAND...
PEMBERTON AND GARDEN CITY.

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 4406 9437 4432 9437 4431 9376 4398 9377
TIME...MOT...LOC 2022Z 278DEG 34KT 4419 9411 

HAIL...1.25IN
WIND...60MPH
 
$$
404 
WWUS53 KMPX 182045
SVSMPX

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

MNC079-182054-
/O.CAN.KMPX.SV.W.0211.000000T0000Z-160818T2100Z/
LE SUEUR MN-
345 PM CDT THU AUG 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LE SUEUR 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 900 PM CDT FOR
SOUTH CENTRAL MINNESOTA.

LAT...LON 4404 9423 4424 9414 4424 9377 4398 9377
TIME...MOT...LOC 2044Z 278DEG 48KT 4416 9385 

$$

MNC013-103-182100-
/O.CON.KMPX.SV.W.0211.000000T0000Z-160818T2100Z/
BLUE EARTH MN-NICOLLET MN-
345 PM CDT THU AUG 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHERN BLUE EARTH AND SOUTHEASTERN NICOLLET COUNTIES...

AT 344 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER EAGLE
LAKE...OR 7 MILES EAST OF MANKATO...MOVING EAST AT 55 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...
MANKATO...NORTH MANKATO...LAKE CRYSTAL...EAGLE LAKE...MADISON LAKE...
ST.
CLAIR...PEMBERTON...GARDEN CITY...SKYLINE AND MANKATO AIRPORT.

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 4404 9423 4424 9414 4424 9377 4398 9377
TIME...MOT...LOC 2044Z 278DEG 48KT 4416 9385 

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

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, 1:43 PM CDTSevere Thunderstorm WarningMPXRedwood47 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.