Alert archive / Iowa / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 528

June 14, 200816 counties in Illinois; 44 counties in Iowa

The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2008, 1:11 PM CDT for 16 counties in Illinois; 44 counties in Iowa. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 14, 2008, 1:11 PM CDT (18:11 UTC)
Expired
Jun 14, 2008, 9:00 PM CDT
In force
8 hr
Issued by
the Storm Prediction Center
All 60 counties

Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Buchanan County, IA, Cedar County, IA, Clarke County, IA, Clinton County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Grundy County, IA, Hardin County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Polk County, IA, Poweshiek County, IA, Scott County, IA, Story County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Bureau County, IL, Carroll County, IL, Fulton County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Knox County, IL, Marshall County, IL, Mercer County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL

The radar

The Des Moines radar (KDMX), 126 km from the middle of the area, began a volume at 18:13 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

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

IssuedProductOfficeCountiesLasted
Jun 14, 1:33 PM CDTSevere Thunderstorm WarningDMXGrundy, Hamilton, Hardin, Marshall, Story42 min
Jun 14, 2:12 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Grundy48 min
Jun 14, 2:14 PM CDTSevere Thunderstorm WarningDMXGrundy, Hardin, Marshall, Tama61 min
Jun 14, 2:35 PM CDTTornado WarningDMXMarshall, Tama40 min
Jun 14, 2:46 PM CDTSevere Thunderstorm WarningDVNBenton59 min
Jun 14, 2:54 PM CDTSevere Thunderstorm WarningDVNBuchanan51 min
Jun 14, 3:00 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Bremer13 min
Jun 14, 3:04 PM CDTSevere Thunderstorm WarningDVNIowa, Johnson, Linn56 min
Jun 14, 3:15 PM CDTSevere Thunderstorm WarningDMXTama15 min
Jun 14, 3:29 PM CDTSevere Thunderstorm WarningDVNDelaware61 min
Jun 14, 3:43 PM CDTSevere Thunderstorm WarningDVNBenton47 min
Jun 14, 3:58 PM CDTSevere Thunderstorm WarningDMXTama27 min
Jun 14, 4:00 PM CDTSevere Thunderstorm WarningDVNIowa, Johnson, Linn45 min
Jun 14, 4:10 PM CDTSevere Thunderstorm WarningDVNBenton, Buchanan, Linn35 min
Jun 14, 4:43 PM CDTSevere Thunderstorm WarningDVNCedar, Johnson, Muscatine47 min
Jun 14, 4:56 PM CDTSevere Thunderstorm WarningDVNJohnson, Linn34 min
Jun 14, 5:23 PM CDTSevere Thunderstorm WarningDVNCedar, Johnson, Muscatine, Scott52 min
Jun 14, 5:28 PM CDTSevere Thunderstorm WarningDVNCedar, Jones, Linn20 min
Jun 14, 5:59 PM CDTFlash Flood WarningDVNLouisa6 hr
Jun 14, 6:01 PM CDTSevere Thunderstorm WarningDVNMercer, Rock Island44 min
Jun 14, 6:16 PM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Scott44 min
Jun 14, 6:31 PM CDTFlash Flood WarningDVNDes Moines, Louisa6 hr
Jun 14, 6:45 PM CDTSevere Thunderstorm WarningDVNMercer, Rock Island45 min
Jun 14, 6:50 PM CDTSevere Thunderstorm WarningILXKnox45 min
Jun 14, 7:03 PM CDTSevere Thunderstorm WarningDVNCedar, Scott42 min
Jun 14, 7:33 PM CDTSevere Thunderstorm WarningDVNHenry, Rock Island, Whiteside42 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

Davenport, (KDVN), launched 12:00Z, 6.2 hours before the alert went out and 143 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, Davenport, at 12:00Z on 2008-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 12:00Z on 2008-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
2 J/kg
Mixed-layer CIN
-120 J/kg
Mixed-layer LCL
1987 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
100 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
Jun 13, 8:11 PM CDTMesoscale DiscussionSPCAlexander, Massac, Pulaski94 min
Jun 14, 12:35 PM CDTMesoscale DiscussionSPCJo Daviess115 min
Jun 14, 5:17 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 24 more88 min
Jun 14, 3:14 PM CDTSevere Thunderstorm WatchSPCClayton, Fayette4 hr

Nearby

Severe Thunderstorm Watches in Iowa, 2008Severe Thunderstorm Watches in Illinois, 2008Every severe thunderstorm watch in 2008

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.