Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 204, NWS Twin Cities, MN

July 1, 2012Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 2012, 5:18 PM CDT for Renville County, Minnesota. It was in force for 27 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 1, 2012, 5:18 PM CDT (22:18 UTC)
Expired: Jul 1, 2012, 5:45 PM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Renville County, MN

The radar

The Minneapolis radar (KMPX), 119 km from the middle of the area, began a volume at 22:18 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, 10.3 hours before the alert went out and 117 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: 1200 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 1457 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 62 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.

853 
WUUS53 KMPX 012218
SVRMPX
MNC129-012245-
/O.NEW.KMPX.SV.W.0204.120701T2218Z-120701T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
518 PM CDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL RENVILLE COUNTY IN CENTRAL MINNESOTA...

* UNTIL 545 PM CDT

* AT 513 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED NEAR NORTH REDWOOD...OR ABOUT OVER REDWOOD
  FALLS...AND MOVING NORTH AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MORTON...
  BECHYN...

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.

&&

LAT...LON 4472 9509 4465 9487 4454 9498 4456 9506
      4457 9509 4459 9511
TIME...MOT...LOC 2218Z 198DEG 15KT 4458 9504
WIND...HAIL 60MPH 1.25IN

$$

CLF

1 follow-up statement

135 
WWUS53 KMPX 012241
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
541 PM CDT SUN JUL 1 2012

MNC129-012257-
/O.EXP.KMPX.SV.W.0204.000000T0000Z-120701T2245Z/
RENVILLE MN-
541 PM CDT SUN JUL 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL RENVILLE COUNTY WILL
EXPIRE AT 545 PM CDT...

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

LAT...LON 4472 9509 4465 9487 4454 9498 4456 9506
      4457 9509 4459 9511
TIME...MOT...LOC 2242Z 198DEG 15KT 4468 9500

$$

CLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:38 PM CDT	Special Weather Statement	MPX	Martin	52 min
Jul 1, 2:55 PM CDT	Special Weather Statement	MPX	Brown	35 min
Jul 1, 2:59 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Renville, Sibley	31 min
Jul 1, 3:54 PM CDT	Special Weather Statement	MPX	Sibley	36 min
Jul 1, 4:02 PM CDT	Severe Thunderstorm Warning	MPX	Sibley	28 min
Jul 1, 4:14 PM CDT	Heat Advisory	MPX	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more	37 hr
Jul 1, 4:52 PM CDT	Special Weather Statement	MPX	Renville	23 min
Jul 1, 5:14 PM CDT	Special Weather Statement	MPX	Renville	31 min
Jul 1, 5:36 PM CDT	Special Weather Statement	MPX	Kanabec	24 min
Jul 1, 5:47 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec	28 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.