Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 103, NWS Twin Cities, MN

July 17, 2015Hennepin County, Sherburne County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2015, 11:52 PM CDT for Hennepin County, Sherburne County, Wright County, Minnesota. It was in force for 38 min. 11 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, 11:52 PM CDT (04:52 UTC)
Expired: Jul 18, 2015, 12:30 AM CDT
In force: 38 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Hennepin County, MN, Sherburne County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 39 km from the middle of the area, began a volume at 04:51 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 18, 12:10 AM CDT	TSTM WND DMG	Montrose, MN	TREE DAMAGE.
Jul 18, 12:12 AM CDT	TSTM WND DMG	4 N St Bonifacius, MN	FOUR INCH DIAMETER BRANCH SEVERED. OCCURRED NEAR INTERSECTION COUNTY ROAD 26 AND COUNTY ROAD 92. TIME ESTIMATED.
Jul 18, 12:13 AM CDT	TSTM WND DMG	Montrose, MN	LARGE CHUNKS OF TREE DEBRIS FALLING. REPORTED VIA TWITTER.
Jul 18, 12:14 AM CDT	TSTM WND DMG	1 N St Bonifacius, MN	PORTION OF OLD BARN BLOW IN. SOME DAMAGE TO OLD SILO. TIME ESTIMATED.
Jul 18, 12:14 AM CDT	TSTM WND DMG	4 Ne St Bonifacius, MN	TWO INCH DIAMETER TREE TOPPLED. OCCURRED ONE HALF MILE EAST OF INTERSECTION OF COUNTY ROAD 15 AND COUNTY ROAD 92. OCCURRED ON HICKORY LANE. TIME ESTIMATED.
Jul 18, 12:15 AM CDT	TSTM WND DMG	Minnetrista, MN	SIX TO EIGHT INCH DIAMETER TREE BROKEN OFF APPROXIMATELY 15 FEET FROM THE BASE. OCCURRED IN FAR NORTHWEST PORTION OF CITY ON OX YOKE CIRCLE JUST NORTH OF INTERSECTION OF COUNTY ROAD 92 AND 26. TIME ESTIMATED.
Jul 18, 12:16 AM CDT	TSTM WND DMG	4 W Mound, MN	SEVERAL 8 TO 12 INCH DIAMETER TREE BRANCHES SEVERED. TIME ESTIMATED.
Jul 18, 12:27 AM CDT	TSTM WND GST 58	Long Lake, MN
Jul 18, 12:35 AM CDT	TSTM WND GST 48	Big Lake, MN	MEASURED WITH ANEMOMETER.
Jul 18, 12:35 AM CDT	TSTM WND GST 48	Big Lake, MN	MEASURED WITH ANEMOMETER. OCCURRED NEAR HIGHWAY 10 AND COUNTY ROAD 81.
Jul 18, 12:40 AM CDT	TSTM WND DMG	Maple Grove, MN	FOUR TO FIVE INCH DIAMETER TREE LIMBS SEVERED. OCCURRED ON DALLAS LANE NORTH. DIME SIZE HAIL ALSO REPORTED.

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 17, 8:39 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.9 hours before the alert went out and 38 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: 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.

250 
WUUS53 KMPX 180452
SVRMPX
MNC053-141-171-180530-
/O.NEW.KMPX.SV.W.0103.150718T0452Z-150718T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1152 PM CDT FRI JUL 17 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  WRIGHT COUNTY IN CENTRAL MINNESOTA...
  CENTRAL SHERBURNE COUNTY IN CENTRAL MINNESOTA...

* UNTIL 1230 AM CDT

* AT 1151 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR ST AUGUSTA TO NEAR WAVERLY TO NEW GERMANY...
  MOVING EAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

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

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BUFFALO AND MONTROSE AROUND 1200 AM CDT.
  DELANO AND ST. BONIFACIUS AROUND 1210 AM CDT.
  MONTICELLO...BECKER AND ROCKFORD AROUND 1215 AM CDT.
  INDEPENDENCE AND MAPLE PLAIN AROUND 1220 AM CDT.
  CHANHASSEN...BIG LAKE...MOUND...ORONO AND MINNETRISTA AROUND 1225
  AM CDT.
  PLYMOUTH...EDEN PRAIRIE...MINNETONKA...SHAKOPEE AND ELK RIVER
  AROUND 1230 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
WOODLAND...FLYING CLOUD AIRPORT...GREENFIELD...WAVERLY...BUFFALO
AIRPORT...RASSAT...DAYTON...HAMEL...HANOVER AND SILVER CREEK.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 179 AND 217.
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 189 AND 217.
 U.S. HIGHWAY 12 BETWEEN MILE MARKERS 123 AND 156.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 118 AND 121...AND BETWEEN MILE
MARKERS 159 AND 166.
 U.S. HIGHWAY 212 BETWEEN MILE MARKERS 155 AND 161.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4541 9351 4525 9352 4521 9344 4480 9339
      4481 9351 4489 9352 4490 9376 4498 9377
      4498 9411 4509 9411 4532 9422 4530 9416
      4535 9409 4543 9405 4546 9409
TIME...MOT...LOC 0451Z 280DEG 32KT 4539 9416 4509 9401 4488 9401 

HAIL...0.75IN
WIND...60MPH
 
$$

1 follow-up statement

827 
WWUS53 KMPX 180521
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1221 AM CDT SAT JUL 18 2015

MNC053-141-171-180530-
/O.CON.KMPX.SV.W.0103.000000T0000Z-150718T0530Z/
HENNEPIN MN-WRIGHT MN-SHERBURNE MN-
1221 AM CDT SAT JUL 18 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR HENNEPIN...CENTRAL WRIGHT AND CENTRAL SHERBURNE COUNTIES...

AT 1220 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR MONTICELLO TO LORETTO TO NEAR VICTORIA...MOVING
EAST AT 35 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

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

THESE SEVERE STORMS WILL BE NEAR...
  CHANHASSEN...MOUND...ORONO...MEDINA AND MAPLE PLAIN AROUND 1225 AM
CDT.
  PLYMOUTH...EDEN PRAIRIE...MINNETONKA...SHAKOPEE AND ELK RIVER
AROUND 1230 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
WOODLAND...FLYING CLOUD AIRPORT...GREENFIELD...BUFFALO AIRPORT...
RASSAT...DAYTON...HAMEL...HANOVER...SILVER CREEK AND ENFIELD.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 179 AND 217.
 U.S. HIGHWAY 10 IN MINNESOTA BETWEEN MILE MARKERS 189 AND 217.
 U.S. HIGHWAY 12 BETWEEN MILE MARKERS 130 AND 156.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 118 AND 121...AND BETWEEN MILE
MARKERS 159 AND 166.
 U.S. HIGHWAY 212 BETWEEN MILE MARKERS 155 AND 161.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4541 9351 4525 9352 4521 9344 4480 9339
      4481 9351 4489 9352 4490 9376 4498 9377
      4498 9387 4510 9399 4535 9409 4543 9405
      4546 9409
TIME...MOT...LOC 0520Z 280DEG 32KT 4535 9382 4505 9367 4484 9367 

HAIL...0.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift, Yellow Medicine	57 min
Jul 17, 8:57 PM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	63 min
Jul 17, 9:28 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Pope, Stevens, Swift	47 min
Jul 17, 9:44 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Swift	61 min
Jul 17, 10:17 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Renville, Yellow Medicine	28 min
Jul 17, 10:30 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Meeker, Stearns	45 min
Jul 17, 10:41 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	34 min
Jul 17, 11:03 PM CDT	Severe Thunderstorm Warning	MPX	Brown, McLeod, Nicollet, Redwood, Renville, Sibley	42 min
Jul 17, 11:09 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Stearns, Wright	51 min
Jul 17, 11:44 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Carver, Le Sueur, McLeod, Nicollet, Scott and 1 more	46 min
Jul 18, 12:01 AM CDT	Tornado Warning	MPX	Carver, Hennepin, Wright	29 min
Jul 18, 12:26 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Dakota, Hennepin, Ramsey, Sherburne, Washington and 1 more	49 min
Jul 18, 12:29 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice, Scott	31 min
Jul 18, 12:55 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Steele, Waseca, Washington	50 min
Jul 18, 1:06 AM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	39 min
Jul 18, 1:25 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville, Yellow Medicine	34 min
Jul 18, 1:27 AM CDT	Severe Thunderstorm Warning	MPX	Goodhue	48 min
Jul 18, 1:42 AM CDT	Special Weather Statement	MPX	Anoka, Dakota, Hennepin, Ramsey	63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015 Every 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.