Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 68, NWS Twin Cities, MN

May 19, 2012Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 19, 2012, 4:38 PM CDT for Renville County, Minnesota. It was in force for 32 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: May 19, 2012, 4:38 PM CDT (21:38 UTC)
Expired: May 19, 2012, 5:10 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Renville County, MN

The radar

The Minneapolis radar (KMPX), 109 km from the middle of the area, began a volume at 21:40 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
May 19, 4:45 PM CDT	HAIL 0.88	5 N Morton, 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 12:00Z, 9.6 hours before the alert went out and 106 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: 23 J/kg
Mixed-layer CIN: -352 J/kg
Mixed-layer LCL: 1615 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 147 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.

712 
WUUS53 KMPX 192138
SVRMPX
MNC129-192230-
/O.NEW.KMPX.SV.W.0068.120519T2138Z-120519T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
438 PM CDT SAT MAY 19 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 436 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED NEAR MORTON...OR ABOUT 6 MILES NORTHEAST OF
  REDWOOD FALLS...AND MOVING NORTHEAST AT 40 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  OLIVIA...
  FRANKLIN...
  BECHYN...
  BIRD ISLAND...
  HECTOR...

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 4489 9504 4489 9455 4452 9489 4462 9516
TIME...MOT...LOC 2139Z 207DEG 33KT 4461 9499
WIND...HAIL 60MPH 1.00IN

$$

1 follow-up statement

483 
WWUS53 KMPX 192210
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
510 PM CDT SAT MAY 19 2012

MNC129-192225-
/O.CAN.KMPX.SV.W.0068.000000T0000Z-120519T2230Z/
RENVILLE MN-
510 PM CDT SAT MAY 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN RENVILLE COUNTY 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 SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.

LAT...LON 4489 9504 4489 9455 4452 9489 4462 9516
TIME...MOT...LOC 2210Z 211DEG 31KT 4477 9475

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:21 PM CDT	Special Weather Statement	MPX	Redwood	39 min
May 18, 9:34 PM CDT	Special Weather Statement	MPX	Kandiyohi	41 min
May 18, 9:45 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	45 min
May 18, 10:48 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	27 min
May 18, 11:13 PM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	47 min
May 18, 11:46 PM CDT	Severe Thunderstorm Warning	MPX	Todd	23 min
May 19, 5:17 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	58 min
May 19, 5:53 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Wright	52 min
May 19, 6:17 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin	43 min
May 19, 6:33 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Sherburne	27 min
May 19, 6:36 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington	54 min
May 19, 6:54 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Isanti	38 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.