Alert archive / Minnesota / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 766

July 19, 200318 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 19, 2003, 6:50 PM CDT for 18 counties in Minnesota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 19, 2003, 6:50 PM CDT (23:50 UTC)
Expired
Jul 20, 2003, 12:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Blue Earth County, MN, Brown County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Grant County, MN, Kandiyohi County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Renville County, MN, Sibley County, MN, Stearns County, MN, Todd County, MN, Waseca County, MN, Watonwan County, MN

The radar

The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 23:54 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.

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 19, 7:00 PM CDTSevere Thunderstorm WarningMPXMeeker30 min
Jul 19, 7:28 PM CDTSevere Thunderstorm WarningMPXMeeker, Renville47 min
Jul 19, 7:34 PM CDTTornado WarningMPXMeeker, Renville41 min
Jul 19, 7:44 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley61 min
Jul 19, 8:19 PM CDTSevere Thunderstorm WarningMPXNicollet41 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 81 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2003-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2003-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1684 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 12:31 PM CDTMesoscale DiscussionSPCAitkin, Becker, Carlton, Cass, Chisago, Clearwater and 8 more89 min
Jul 19, 2:40 PM CDTSevere Thunderstorm WatchSPCAitkin, Anoka, Becker, Benton, Carlton, Carver and 24 more5 hr
Jul 19, 5:00 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Becker, Beltrami, Benton, Carlton and 41 more90 min
Jul 19, 5:30 PM CDTSevere Thunderstorm WatchSPCBeltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 8 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2003Every severe thunderstorm watch 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.