Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 122, NWS Twin Cities, MN

July 20, 2003Lac qui Parle County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 20, 2003, 3:21 AM CDT for Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 54 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 20, 2003, 3:21 AM CDT (08:21 UTC)
Expired: Jul 20, 2003, 4:15 AM CDT
In force: 54 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Lac qui Parle County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 145 km from the middle of the area, began a volume at 08:21 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
Jul 20, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 8.4 hours before the alert went out and 180 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: 2126 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2042 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 200821
SVRMPX
MNC073-173-200915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
319 AM CDT SUN JUL 20 2003

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA
  YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 415 AM CDT

* AT 319 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE
  HAIL AND DAMAGING WINDS 17 MILES NORTHWEST OF CANBY...OR ABOUT 6   
  MILES NORTHEAST OF CLEAR LAKE SOUTH DAKOTA...MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CANBY.
  MADISON.
  DAWSON.
  BOYD.
  MONTEVIDEO.
  HANLEY FALLS.
  HAZEL RUN.
  CLARKFIELD.
  PROVIDENCE.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4498 9655 4473 9653 4465 9640 4457 9539
          4477 9552 4503 9589

$$

BINAU

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:00 PM CDT	Severe Thunderstorm Warning	MPX	Meeker	30 min
Jul 19, 7:28 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Renville	47 min
Jul 19, 7:34 PM CDT	Tornado Warning	MPX	Meeker, Renville	41 min
Jul 19, 7:44 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	61 min
Jul 19, 8:19 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet	41 min
Jul 20, 5:08 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	52 min
Jul 20, 5:54 AM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2003 Every severe thunderstorm warning in 2003

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.