Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 57, NWS Twin Cities, MN

July 7, 2014Anoka County, Chisago County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 7, 2014, 1:32 PM CDT for Anoka County, Chisago County, Washington County, Minnesota. It was in force for 34 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: Jul 7, 2014, 1:32 PM CDT (18:32 UTC)
Expired: Jul 7, 2014, 2:06 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Anoka County, MN, Chisago County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 18:33 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.5 hours before the alert went out and 72 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1744 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

496 
WUUS53 KMPX 071832
SVRMPX
MNC003-025-163-071915-
/O.NEW.KMPX.SV.W.0057.140707T1832Z-140707T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
132 PM CDT MON JUL 7 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTH CENTRAL CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 215 PM CDT

* AT 130 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR EAST
  BETHEL...AND MOVING SOUTHEAST 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...
  FOREST LAKE...WILLIAM O BRIEN STATE PARK...SCANDIA...OTISVILLE AND
  MARINE ON ST CROIX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4530 9275 4517 9275 4513 9276 4529 9317
      4535 9316
TIME...MOT...LOC 1832Z 293DEG 29KT 4531 9312

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

$$

JRB

2 follow-up statements

882 
WWUS53 KMPX 071852
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
152 PM CDT MON JUL 7 2014

MNC003-071902-
/O.CAN.KMPX.SV.W.0057.000000T0000Z-140707T1915Z/
ANOKA MN-
152 PM CDT MON JUL 7 2014

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4530 9276 4524 9275 4519 9277 4517 9275
      4513 9276 4523 9302 4533 9301
TIME...MOT...LOC 1852Z 293DEG 27KT 4525 9293

$$

MNC025-163-071915-
/O.CON.KMPX.SV.W.0057.000000T0000Z-140707T1915Z/
CHISAGO MN-WASHINGTON MN-
152 PM CDT MON JUL 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
WASHINGTON AND SOUTH CENTRAL CHISAGO COUNTIES UNTIL 215 PM CDT...

AT 148 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FOREST LAKE...
AND MOVING SOUTHEAST AT 30 MPH.

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

SOURCE...RADAR INDICATED. IN ADDITION...AT 140PM NICKEL SIZE HAIL 
         WAS REPORTED NEAR EAST BETHEL.

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

LOCATIONS IMPACTED INCLUDE...
WILLIAM O BRIEN STATE PARK...SCANDIA...OTISVILLE AND MARINE ON ST
CROIX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4530 9276 4524 9275 4519 9277 4517 9275
      4513 9276 4523 9302 4533 9301
TIME...MOT...LOC 1852Z 293DEG 27KT 4525 9293

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

$$

JRB

954 
WWUS53 KMPX 071906
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
206 PM CDT MON JUL 7 2014

MNC025-163-071916-
/O.CAN.KMPX.SV.W.0057.000000T0000Z-140707T1915Z/
CHISAGO MN-WASHINGTON MN-
206 PM CDT MON JUL 7 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON AND SOUTH
CENTRAL CHISAGO COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER...HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4530 9276 4524 9275 4519 9277 4517 9275
      4513 9276 4523 9302 4533 9301
TIME...MOT...LOC 1906Z 293DEG 27KT 4521 9279

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 1:20 PM CDT	Special Weather Statement	MPX	Anoka	40 min
Jul 7, 2:02 PM CDT	Special Weather Statement	MPX	Kanabec	28 min
Jul 7, 2:20 PM CDT	Special Weather Statement	MPX	Ramsey, Washington	25 min
Jul 7, 4:22 PM CDT	Special Weather Statement	MPX	Kandiyohi, Meeker	38 min
Jul 7, 4:26 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	49 min
Jul 7, 5:20 PM CDT	Special Weather Statement	MPX	McLeod	40 min
Jul 7, 5:38 PM CDT	Special Weather Statement	MPX	Dakota	37 min
Jul 7, 5:41 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Le Sueur, McLeod, Nicollet, Scott, Sibley	49 min
Jul 7, 5:50 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott, Washington	40 min
Jul 7, 6:01 PM CDT	Special Weather Statement	MPX	Hennepin	29 min
Jul 7, 6:13 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Le Sueur, Rice, Scott, Washington	47 min
Jul 7, 6:29 PM CDT	Special Weather Statement	MPX	Blue Earth	31 min
Jul 7, 6:40 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Washington	49 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014 Every severe thunderstorm warning in 2014

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.