Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 213, NWS Twin Cities, MN

July 5, 2012Kanabec County, Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 5, 2012, 12:04 AM CDT for Kanabec County, Mille Lacs County, Minnesota. It was in force for 41 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: Jul 5, 2012, 12:04 AM CDT (05:04 UTC)
Expired: Jul 5, 2012, 12:45 AM CDT
In force: 41 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kanabec County, MN, Mille Lacs County, MN

The radar

The Minneapolis radar (KMPX), 108 km from the middle of the area, began a volume at 05:04 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 5, 12:09 AM CDT	TSTM WND GST 57	8 N Milaca, MN	MNDOT STATION MN076 US-169 MILE POST 200

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 4, 8:59 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.1 hours before the alert went out and 108 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: 2542 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1972 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

753 
WUUS53 KMPX 050504
SVRMPX
MNC065-095-050545-
/O.NEW.KMPX.SV.W.0213.120705T0504Z-120705T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1204 AM CDT THU JUL 5 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...
  CENTRAL MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1245 AM CDT

* AT MIDNIGHT CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE
  OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED 7 MILES NORTH OF MILACA...AND MOVING EAST AT 20
  MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MILACA...
  FORESTON...
  OGILVIE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING
FOR EAST CENTRAL MINNESOTA AND NORTHWEST WISCONSIN.

&&

LAT...LON 4573 9339 4573 9375 4595 9377 4596 9336
TIME...MOT...LOC 0503Z 271DEG 16KT 4586 9363
WIND...HAIL 60MPH 1.00IN

$$

CLF

1 follow-up statement

497 
WWUS53 KMPX 050518
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1218 AM CDT THU JUL 5 2012

MNC065-095-050545-
/O.CON.KMPX.SV.W.0213.000000T0000Z-120705T0545Z/
KANABEC MN-MILLE LACS MN-
1218 AM CDT THU JUL 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MILLE
LACS AND SOUTHWESTERN KANABEC COUNTIES UNTIL 1245 AM CDT...

AT 1216 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 65 MPH.  THIS STORM WAS LOCATED 6 MILES NORTHEAST OF
MILACA...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  OGILVIE.

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.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4596 9336 4573 9339 4573 9375 4591 9368
TIME...MOT...LOC 0518Z 271DEG 16KT 4582 9356
WIND...HAIL 60MPH 1.00IN

$$

CLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 8:13 PM CDT	Special Weather Statement	MPX	Kanabec	62 min
Jul 4, 8:28 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	77 min
Jul 4, 9:44 PM CDT	Tornado Warning	MPX	Morrison, Todd	31 min
Jul 4, 10:15 PM CDT	Severe Thunderstorm Warning	MPX	Morrison	15 min
Jul 4, 10:17 PM CDT	Special Weather Statement	MPX	Morrison	28 min
Jul 4, 10:57 PM CDT	Special Weather Statement	MPX	Mille Lacs	48 min
Jul 4, 11:46 PM CDT	Special Weather Statement	MPX	Mille Lacs	29 min
Jul 5, 12:34 AM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti, Kanabec, Mille Lacs	41 min
Jul 5, 1:11 AM CDT	Severe Thunderstorm Warning	MPX	Chisago	16 min
Jul 5, 3:25 AM CDT	Special Weather Statement	MPX	Watonwan	50 min
Jul 5, 4:03 AM CDT	Special Weather Statement	MPX	Watonwan	42 min
Jul 5, 5:07 AM CDT	Special Weather Statement	MPX	Wright	38 min
Jul 5, 6:01 AM CDT	Special Weather Statement	MPX	Carver	44 min
Jul 5, 6:30 AM CDT	Special Weather Statement	MPX	McLeod	30 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every severe thunderstorm warning in 2012

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.