Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 88, NWS Twin Cities, MN

August 21, 2014Faribault County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 21, 2014, 4:47 AM CDT for Faribault County, Minnesota. It was in force for 43 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: Aug 21, 2014, 4:47 AM CDT (09:47 UTC)
Expired: Aug 21, 2014, 5:30 AM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Faribault County, MN

The radar

The Minneapolis radar (KMPX), 137 km from the middle of the area, began a volume at 09:50 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 21, 1:00 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.8 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: 397 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1160 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 162 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.

324 
WUUS53 KMPX 210947
SVRMPX
MNC043-211030-
/O.NEW.KMPX.SV.W.0088.140821T0947Z-140821T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
447 AM CDT THU AUG 21 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FARIBAULT COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 530 AM CDT

* AT 445 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 9 MILES NORTHEAST OF FAIRMONT TO 6 MILES EAST OF
  FAIRMONT TO 10 MILES SOUTH OF FAIRMONT...AND MOVING EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

  SOURCE...RADAR INDICATED. IN ADDITION...THIS STORM PRODUCED WIND   
  GUSTS IN EXCESS OF 60 MPH IN NORTHERN IOWA EARLIER.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  BLUE EARTH...GUCKEEN...HUNTLEY...ELMORE...DELAVAN...FROST...
  EASTON...BRUSH CREEK...BRICELYN...WELLS...BARODA...KIESTER AND
  WALTERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4374 9425 4382 9365 4349 9366 4350 9425
TIME...MOT...LOC 0947Z 268DEG 39KT 4374 9430 4362 9431
          4351 9435

HAIL...0.75IN
WIND...60MPH

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 12:24 AM CDT	Special Weather Statement	MPX	Lac qui Parle	36 min
Aug 21, 12:52 AM CDT	Special Weather Statement	MPX	Stevens	53 min
Aug 21, 2:01 AM CDT	Areal Flood Warning	MPX	Stevens, Swift	6 hr
Aug 21, 2:33 AM CDT	Flash Flood Watch	MPX	Anoka, Blue Earth, Carver, Chippewa, Dakota, Douglas and 21 more	4 hr
Aug 21, 2:50 AM CDT	Special Weather Statement	MPX	Brown, Martin, Watonwan	85 min
Aug 21, 3:07 AM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Pope, Swift	83 min
Aug 21, 3:53 AM CDT	Areal Flood Warning	MPX	Brown, Watonwan	5 hr
Aug 21, 4:20 AM CDT	Severe Thunderstorm Warning	MPX	Martin	40 min
Aug 21, 4:31 AM CDT	Special Weather Statement	MPX	Blue Earth, Nicollet	59 min
Aug 21, 5:10 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Waseca	50 min
Aug 21, 7:16 AM CDT	Heat Advisory	MPX	Blue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 14 more	13 hr
Aug 21, 6:20 PM CDT	Special Weather Statement	MPX	Watonwan	25 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.