Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 98, NWS Twin Cities, MN

July 17, 20154 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2015, 10:30 PM CDT for 4 counties in Minnesota. It was in force for 45 min. 2 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
Jul 17, 2015, 10:30 PM CDT (03:30 UTC)
Expired
Jul 17, 2015, 11:15 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Chippewa County, MN, Kandiyohi County, MN, Meeker County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 116 km from the middle of the area, began a volume at 03:33 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
Jul 17, 10:38 PM CDTTSTM WND DMGWillmar, MNMEDIUM SIZE TREE TOPPLED.
Jul 17, 10:55 PM CDTTSTM WND GST 51Willmar, 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.

IssuedProductOfficeLasted
Jul 17, 8:39 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.5 hours before the alert went out and 114 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 00:00Z on 2015-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 888 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 00:00Z on 2015-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.193958Sfc1 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
888 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1752 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

943 
WUUS53 KMPX 180330
SVRMPX
MNC023-067-093-145-180415-
/O.NEW.KMPX.SV.W.0098.150718T0330Z-150718T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1030 PM CDT FRI JUL 17 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN STEARNS COUNTY IN CENTRAL MINNESOTA...
  MEEKER COUNTY IN CENTRAL MINNESOTA...
  KANDIYOHI COUNTY IN CENTRAL MINNESOTA...
  EAST CENTRAL CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 1115 PM CDT

* AT 1030 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM BELGRADE TO NEAR PENNOCK TO GLUEK...MOVING EAST AT
  45 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE 
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE 
           HOMES...ROOFS AND OUTBUILDINGS. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WILLMAR AND BELGRADE AROUND 1035 PM CDT.
  NEW LONDON AND SPICER AROUND 1045 PM CDT.
  PAYNESVILLE...RAYMOND AND PRINSBURG AROUND 1050 PM CDT.
  ATWATER AROUND 1055 PM CDT.
  RICHMOND AND GROVE CITY AROUND 1100 PM CDT.
  LITCHFIELD AND COLD SPRING AROUND 1110 PM CDT.
  ROCKVILLE AND COSMOS AROUND 1115 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LAKE
HENRY...FOREST CITY...GEORGEVILLE...KANDIYOHI...SVEA...HAWICK...LAKE
KORONIS REGIONAL PARK...NORWAY LAKE...WILLMAR AIRPORT AND LAKE
LILLIAN.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 U.S. HIGHWAY 12 BETWEEN MILE MARKERS 69 AND 105.
 U.S. HIGHWAY 8 IN MINNESOTA NEAR MILE MARKER 6.
 U.S. HIGHWAY 71 BETWEEN MILE MARKERS 108 AND 147.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4490 9541 4516 9512 4541 9515 4542 9513
      4546 9512 4547 9419 4519 9431 4489 9477
TIME...MOT...LOC 0330Z 267DEG 40KT 4543 9503 4517 9514 4496 9550 

HAIL...1.00IN
WIND...70MPH
 
$$
1 follow-up statement
450 
WWUS53 KMPX 180358
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1058 PM CDT FRI JUL 17 2015

MNC023-180408-
/O.CAN.KMPX.SV.W.0098.000000T0000Z-150718T0415Z/
CHIPPEWA MN-
1058 PM CDT FRI JUL 17 2015

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHIPPEWA COUNTY
IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT FOR
CENTRAL MINNESOTA.

LAT...LON 4490 9520 4522 9502 4546 9512 4547 9419
      4519 9431 4489 9477
TIME...MOT...LOC 0358Z 280DEG 35KT 4546 9478 4520 9471 4494 9494 

$$

MNC067-093-145-180415-
/O.CON.KMPX.SV.W.0098.000000T0000Z-150718T0415Z/
STEARNS MN-MEEKER MN-KANDIYOHI MN-
1058 PM CDT FRI JUL 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR SOUTHERN STEARNS...MEEKER AND KANDIYOHI COUNTIES...

AT 1058 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LAKE HENRY TO NEAR GROVE CITY TO NEAR LAKE LILLIAN...
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

THESE SEVERE STORMS WILL BE NEAR...
  GROVE CITY AROUND 1105 PM CDT.
  LITCHFIELD...COLD SPRING...RICHMOND...EDEN VALLEY AND COSMOS AROUND
1115 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LAKE
HENRY...FOREST CITY...GEORGEVILLE...KANDIYOHI...SVEA...HAWICK...LAKE
KORONIS REGIONAL PARK...LAKE LILLIAN...LUXEMBURG AND MANANNAH.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 U.S. HIGHWAY 12 BETWEEN MILE MARKERS 73 AND 105.
 U.S. HIGHWAY 8 IN MINNESOTA NEAR MILE MARKER 6.
 U.S. HIGHWAY 71 BETWEEN MILE MARKERS 108 AND 147.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4490 9520 4522 9502 4546 9512 4547 9419
      4519 9431 4489 9477
TIME...MOT...LOC 0358Z 280DEG 35KT 4546 9478 4520 9471 4494 9494 

HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 8:48 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift, Yellow Medicine57 min
Jul 17, 8:57 PM CDTSevere Thunderstorm WarningMPXStevens, Swift63 min
Jul 17, 9:28 PM CDTSevere Thunderstorm WarningMPXChippewa, Pope, Stevens, Swift47 min
Jul 17, 9:44 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Lac qui Parle, Swift61 min
Jul 17, 10:17 PM CDTSevere Thunderstorm WarningMPXChippewa, Renville, Yellow Medicine28 min
Jul 17, 10:41 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Yellow Medicine34 min
Jul 17, 11:03 PM CDTSevere Thunderstorm WarningMPXBrown, McLeod, Nicollet, Redwood, Renville, Sibley42 min
Jul 17, 11:09 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Stearns, Wright51 min
Jul 17, 11:44 PM CDTSevere Thunderstorm WarningMPXBrown, Carver, Le Sueur, McLeod, Nicollet, Scott and 1 more46 min
Jul 17, 11:52 PM CDTSevere Thunderstorm WarningMPXHennepin, Sherburne, Wright38 min
Jul 18, 12:01 AM CDTTornado WarningMPXCarver, Hennepin, Wright29 min
Jul 18, 12:26 AM CDTSevere Thunderstorm WarningMPXAnoka, Dakota, Hennepin, Ramsey, Sherburne, Washington and 1 more49 min
Jul 18, 12:29 AM CDTSevere Thunderstorm WarningMPXDakota, Le Sueur, Rice, Scott31 min
Jul 18, 12:55 AM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Rice, Steele, Waseca, Washington50 min
Jul 18, 1:06 AM CDTSevere Thunderstorm WarningMPXChisago, Washington39 min
Jul 18, 1:25 AM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Renville, Yellow Medicine34 min
Jul 18, 1:27 AM CDTSevere Thunderstorm WarningMPXGoodhue48 min
Jul 18, 1:42 AM CDTSpecial Weather StatementMPXAnoka, Dakota, Hennepin, Ramsey63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015Every severe thunderstorm warning in 2015

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.