Alert archive / Iowa / Mesoscale Discussions in 2005

Mesoscale Discussion 1618

July 3, 200534 counties in Iowa; 16 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2005, 1:25 PM CDT for 34 counties in Iowa; 16 counties in Minnesota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 3, 2005, 1:25 PM CDT (18:25 UTC)
Expired
Jul 3, 2005, 4:00 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 50 counties

Adair County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Dickinson County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Madison County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Wright County, IA, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Faribault County, MN, Freeborn County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Nicollet County, MN, Scott County, MN, Sibley County, MN, Waseca County, MN, Watonwan County, MN, Wright County, MN

The radar

The Des Moines radar (KDMX), 166 km from the middle of the area, began a volume at 18:27 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 12:00Z, 6.4 hours before the alert went out and 220 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 2005-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 79 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2005-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 209 square meters per square second.1939587897Sfc1 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
79 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
224 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.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 3:27 AM CDTMesoscale DiscussionSPCDickinson, Emmet, Lyon, Mitchell, Osceola, Winnebago and 1 more33 min
Jul 3, 6:39 AM CDTMesoscale DiscussionSPCBuena Vista, Cerro Gordo, Cherokee, Chickasaw, Clay, Dickinson and 13 more66 min
Jul 3, 8:09 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 11 more66 min
Jul 3, 6:02 PM CDTMesoscale DiscussionSPCAllamakee, Black Hawk, Boone, Bremer, Buchanan, Butler and 15 more118 min
Jul 2, 8:45 PM CDTMesoscale DiscussionSPCBeltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more2 hr
Jul 2, 11:05 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Chippewa, Clay, Douglas, Grant and 17 more7 hr
Jul 2, 11:53 PM CDTMesoscale DiscussionSPCBeltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more2 hr
Jul 3, 1:12 AM CDTMesoscale DiscussionSPCBeltrami, Clearwater, Itasca, Kittson, Koochiching, Lake of the Woods and 5 more33 min
Jul 3, 1:35 AM CDTSevere Thunderstorm WatchSPCBeltrami, Clearwater, Itasca, Koochiching, Marshall, Pennington and 3 more4 hr
Jul 3, 4:00 AM CDTSevere Thunderstorm WatchSPCAnoka, Big Stone, Blue Earth, Brown, Carver, Chippewa and 37 more5 hr
Jul 3, 5:34 AM CDTMesoscale DiscussionSPCBeltrami, Cook, Itasca, Koochiching, Lake, Lake of the Woods and 2 more26 min

Nearby

Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Minnesota, 2005Every mesoscale discussion in 2005

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.