Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 3, NWS Twin Cities, MN

May 7, 2014Martin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 7, 2014, 4:18 AM CDT for Martin 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: May 7, 2014, 4:18 AM CDT (09:18 UTC)
Expired: May 7, 2014, 4:45 AM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Martin County, MN

The radar

The Minneapolis radar (KMPX), 137 km from the middle of the area, began a volume at 09:30 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 00:00Z, 9.3 hours before the alert went out and 136 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: 2079 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 278 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.

147 
WUUS53 KMPX 070918
SVRMPX
MNC091-070945-
/O.NEW.KMPX.SV.W.0003.140507T0918Z-140507T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
418 AM CDT WED MAY 7 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 445 AM CDT

* AT 415 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTHEAST
  OF FAIRMONT...AND MOVING NORTHEAST AT 10 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN MARTIN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4372 9443 4378 9447 4385 9436 4385 9425
      4375 9424 4370 9425 4366 9437
TIME...MOT...LOC 0918Z 235DEG 10KT 4373 9433

HAIL...1.25IN
WIND...<50MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 2:59 AM CDT	Special Weather Statement	MPX	Martin	46 min
May 7, 4:51 AM CDT	Special Weather Statement	MPX	Martin	24 min
May 7, 5:33 AM CDT	Special Weather Statement	MPX	Waseca	27 min
May 7, 6:04 AM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele	41 min
May 7, 1:39 PM CDT	Special Weather Statement	MPX	Lac qui Parle	36 min
May 7, 2:26 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	64 min
May 7, 6:09 PM CDT	Special Weather Statement	MPX	Faribault, Martin, Watonwan	36 min
May 7, 6:22 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Martin, Watonwan	53 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.