Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 56, NWS Twin Cities, MN

June 29, 2015Anoka County, Ramsey County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 29, 2015, 6:48 PM CDT for Anoka County, Ramsey County, Minnesota. It was in force for 42 min. 14 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: Jun 29, 2015, 6:48 PM CDT (23:48 UTC)
Expired: Jun 29, 2015, 7:30 PM CDT
In force: 42 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Anoka County, MN, Ramsey County, MN

The radar

The Minneapolis radar (KMPX), 44 km from the middle of the area, began a volume at 23:48 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
Jun 29, 6:55 PM CDT	HAIL 1	6 Ese Anoka, MN	LASTED FOR 5 MINUTES.
Jun 29, 6:57 PM CDT	HAIL 1.25	Blaine, MN	COUNTY ROAD 14 AND RADISSON BLVD.
Jun 29, 7:04 PM CDT	HAIL 1.25	Blaine, MN
Jun 29, 7:06 PM CDT	HAIL 0.75	Blaine, MN	OCCURRED AT 109TH AND RADISSON ROAD.
Jun 29, 7:10 PM CDT	HAIL 1	Blaine, MN	OCCURRED IN SOUTHERN BLAINE AND LASTED FOR 15 MINUTES.
Jun 29, 7:12 PM CDT	HAIL 1.25	Fridley, MN	OCCURRED NEAR HIGHWAY 65 AND MOORE LAKE ROAD.
Jun 29, 7:16 PM CDT	HAIL 0.75	New Brighton, MN	SOUTHWEST CORNER OF 694 AND 35W.
Jun 29, 7:17 PM CDT	HAIL 1.5	Fridley, MN	NEAR UNIVERSITY AND 73RD.
Jun 29, 7:18 PM CDT	HAIL 1	Fridley, MN	AT I 694 AND UNIVERSITY ROAD.
Jun 29, 7:18 PM CDT	HAIL 1	Fridley, MN
Jun 29, 7:19 PM CDT	HAIL 1	Arden Hills, MN	NEAR I-35W AND HWY 96.
Jun 29, 7:19 PM CDT	HAIL 1	Arden Hills, MN
Jun 29, 7:30 PM CDT	HAIL 1	4 Ene Brooklyn Center, MN	OCCURRED AT FRIDLEY MOORE LAKE.
Jun 29, 7:40 PM CDT	HAIL 1	3 E Brooklyn Center, MN	OCCURRED IN SOUTH FRIDLEY.

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
Jun 29, 1:57 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 45 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: 160 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

085 
WUUS53 KMPX 292348
SVRMPX
MNC003-123-300030-
/O.NEW.KMPX.SV.W.0056.150629T2348Z-150630T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
648 PM CDT MON JUN 29 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...
  CENTRAL ANOKA COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 730 PM CDT

* AT 648 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HAM LAKE...
  OR 18 MILES NORTH OF MINNEAPOLIS...MOVING SOUTH AT 35 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL. 

  SOURCE...TRAINED WEATHER SPOTTERS. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  BLAINE AND LINO LAKES AROUND 655 PM CDT.
  FRIDLEY...SHOREVIEW...MOUNDS VIEW AND SPRING LAKE PARK AROUND 700
  PM CDT.
  NEW BRIGHTON...COLUMBIA HEIGHTS AND ARDEN HILLS AROUND 705 PM CDT.
  ROSEVILLE AND VADNAIS HEIGHTS AROUND 710 PM CDT.
  MAPLEWOOD AROUND 715 PM CDT.
  ST. PAUL AROUND 720 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CIRCLE
PINES...BLAINE AIRPORT...LAKE PHALEN...HILLTOP...FALCON HEIGHTS...
LITTLE CANADA...LEXINGTON...LAUDERDALE...MN STATE FAIR AND NORTH
OAKS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4530 9324 4523 9322 4519 9315 4498 9303
      4498 9321 4503 9321 4504 9326 4530 9335
TIME...MOT...LOC 2348Z 344DEG 31KT 4523 9321 

HAIL...1.25IN
WIND...<50MPH
 
$$

BORGHOFF

1 follow-up statement

505 
WWUS53 KMPX 300003
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
703 PM CDT MON JUN 29 2015

MNC003-123-300030-
/O.CON.KMPX.SV.W.0056.000000T0000Z-150630T0030Z/
RAMSEY MN-ANOKA MN-
703 PM CDT MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHERN RAMSEY AND SOUTHEASTERN ANOKA COUNTIES...

AT 703 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SPRING LAKE
PARK...OR 11 MILES NORTH OF MINNEAPOLIS...MOVING SOUTH AT 30 MPH.

HAZARD...HALF DOLLAR SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  COLUMBIA HEIGHTS AROUND 710 PM CDT.
  MINNEAPOLIS AND ROSEVILLE AROUND 715 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CIRCLE
PINES...BLAINE AIRPORT...LAKE PHALEN...HILLTOP...FALCON HEIGHTS...
LITTLE CANADA...LEXINGTON...LAUDERDALE...MN STATE FAIR AND NORTH
OAKS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4519 9315 4498 9303 4498 9321 4503 9321
      4504 9326 4522 9332
TIME...MOT...LOC 0003Z 008DEG 28KT 4512 9324 

HAIL...1.25IN
WIND...<50MPH
 
$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 1:19 PM CDT	Special Weather Statement	MPX	Mille Lacs	26 min
Jun 29, 3:12 PM CDT	Special Weather Statement	MPX	Hennepin	33 min
Jun 29, 3:19 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Wright	56 min
Jun 29, 3:56 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	64 min
Jun 29, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	47 min
Jun 29, 5:00 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	60 min
Jun 29, 5:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Washington	58 min
Jun 29, 6:02 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti	43 min
Jun 29, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Ramsey, Washington	47 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.