Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 74, NWS Twin Cities, MN

June 6, 2011Kanabec County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 6, 2011, 10:50 PM CDT for Kanabec County, Minnesota. It was in force for 25 min. 1 report 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 6, 2011, 10:50 PM CDT (03:50 UTC)
Expired: Jun 6, 2011, 11:15 PM CDT
In force: 25 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Kanabec County, MN

The radar

The Duluth radar (KDLH), 112 km from the middle of the area, began a volume at 03:53 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 6, 11:00 PM CDT	HAIL 0.25	10 E Warman, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.8 hours before the alert went out and 137 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: 1378 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 2378 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

221 
WUUS53 KMPX 070350
SVRMPX
MNC065-070415-
/O.NEW.KMPX.SV.W.0074.110607T0350Z-110607T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1050 PM CDT MON JUN 6 2011

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1115 PM CDT

* AT 1045 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING HALF DOLLAR SIZE HAIL. THIS STORM WAS LOCATED 9 MILES
  EAST OF WARMAN...OR ABOUT 10 MILES WEST OF HINCKLEY...AND MOVING
  EAST AT 25 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4599 9304 4598 9306 4598 9312 4596 9313
      4596 9320 4613 9325 4617 9307 4616 9304
TIME...MOT...LOC 0350Z 264DEG 23KT 4606 9308
WIND...HAIL <50MPH 1.25IN

$$

JPC

2 follow-up statements

346 
WWUS53 KMPX 070406
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1106 PM CDT MON JUN 6 2011

MNC065-070415-
/O.CON.KMPX.SV.W.0074.000000T0000Z-110607T0415Z/
KANABEC MN-
1106 PM CDT MON JUN 6 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
KANABEC COUNTY UNTIL 1115 PM CDT...

AT 1105 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL.  THIS STORM
WAS LOCATED 8 MILES NORTHWEST OF HINCKLEY...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
RURAL LOCATIONS WITHIN EXTREME NORTHEASTERN KANABEC COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4616 9304 4605 9304 4608 9314 4615 9317
      4617 9309
TIME...MOT...LOC 0406Z 267DEG 33KT 4611 9300
WIND...HAIL <50MPH 1.25IN

$$

JC

385 
WWUS53 KMPX 070416
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1116 PM CDT MON JUN 6 2011

MNC065-070432-
/O.EXP.KMPX.SV.W.0074.000000T0000Z-110607T0415Z/
KANABEC MN-
1116 PM CDT MON JUN 6 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KANABEC COUNTY
HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4616 9304 4605 9304 4608 9314 4615 9317
      4617 9309
TIME...MOT...LOC 0406Z 267DEG 33KT 4610 9300

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 10:32 PM CDT	Special Weather Statement	MPX	Kanabec	43 min
Jun 7, 3:37 AM CDT	Wind Advisory	MPX	Blue Earth, Brown, Chippewa, Douglas, Faribault, Freeborn and 19 more	15 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Every severe thunderstorm warning in 2011

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.