Alert archive / Minnesota / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 120, NWS Twin Cities, MN

July 19, 2003McLeod County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 2003, 7:44 PM CDT for McLeod County, Sibley County, Minnesota. It was in force for 61 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 19, 2003, 7:44 PM CDT (00:44 UTC)
Expired: Jul 19, 2003, 8:45 PM CDT
In force: 61 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties McLeod County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 55 km from the middle of the area, began a volume at 00:45 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 19, 6:50 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 53 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: 3136 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 13.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 200044
SVRMPX
MNC085-143-200145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
742 PM CDT SAT JUL 19 2003

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCLEOD COUNTY IN CENTRAL MINNESOTA
  SIBLEY COUNTY IN CENTRAL MINNESOTA

* UNTIL 845 PM CDT

* AT 742 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES WEST
  OF GLENCOE...OR ABOUT 12 MILES SOUTHEAST OF HUTCHINSON...MOVING    
  SOUTH AT 20 MPH.  A SECOND SEVERE THUNDERSTORM WAS LOCATED ABOUT 8 
  MILES SOUTHWEST OF HUTCHINSON.  THIS AREA WAS ALSO MOVING TO THE   
  SOUTH AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GAYLORD.
  GLENCOE.
  GIBBON.
  STEWART.
  BROWNTON.
  WINTHROP.
  FERNANDO.
  
THIS IS A DANGEROUS STORM...STAY INDOORS AWAY FROM WINDOWS. SEVERE 
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE 
WARNING.

LAT...LON 4487 9410 4488 9446 4448 9457 4449 9397

$$

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, 8:19 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet	41 min
Jul 20, 3:21 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	54 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.