Alert archive / Iowa / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 428

June 14, 200120 counties in Illinois; 21 counties in Iowa; 10 counties in Missouri

The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2001, 4:15 PM CDT for 20 counties in Illinois; 21 counties in Iowa; 10 counties in Missouri. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 14, 2001, 4:15 PM CDT (21:15 UTC)
Expired
Jun 14, 2001, 9:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 51 counties

Benton County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Adams County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jersey County, IL, Jo Daviess County, IL, Knox County, IL, McDonough County, IL, Mercer County, IL, Morgan County, IL, Pike County, IL, Rock Island County, IL, Schuyler County, IL, Scott County, IL, Warren County, IL, Audrain County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Scotland County, MO, Shelby County, MO

The radar

The Quad Cities radar (KDVN), 144 km from the middle of the area, began a volume at 21:16 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

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

IssuedProductOfficeCountiesLasted
Jun 14, 4:44 PM CDTSevere Thunderstorm WarningDVNIowa, Keokuk46 min
Jun 14, 4:46 PM CDTSevere Thunderstorm WarningLSXLewis44 min
Jun 14, 5:05 PM CDTSevere Thunderstorm WarningDVNHancock40 min
Jun 14, 5:14 PM CDTSevere Thunderstorm WarningDVNDes Moines, Johnson, Louisa, Washington46 min
Jun 14, 5:18 PM CDTSevere Thunderstorm WarningLSXAdams42 min
Jun 14, 5:22 PM CDTSevere Thunderstorm WarningDVNBenton, Buchanan, Iowa, Linn38 min
Jun 14, 5:34 PM CDTSevere Thunderstorm WarningDVNHenderson, McDonough, Warren56 min
Jun 14, 5:35 PM CDTSevere Thunderstorm WarningDVNMercer, Rock Island55 min
Jun 14, 5:35 PM CDTSevere Thunderstorm WarningILXSchuyler55 min
Jun 14, 5:38 PM CDTSevere Thunderstorm WarningLSXBrown37 min
Jun 14, 5:41 PM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Jones, Scott64 min
Jun 14, 5:57 PM CDTTornado WarningDVNCedar, Muscatine, Scott33 min
Jun 14, 6:06 PM CDTSevere Thunderstorm WarningDVNDubuque, Jackson54 min
Jun 14, 6:06 PM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware, Linn54 min
Jun 14, 6:15 PM CDTSevere Thunderstorm WarningDVNHenry, Rock Island, Whiteside45 min
Jun 14, 6:19 PM CDTSevere Thunderstorm WarningILXFulton, Knox56 min
Jun 14, 6:44 PM CDTSevere Thunderstorm WarningDVNCarroll, Jo Daviess61 min
Jun 14, 6:44 PM CDTSevere Thunderstorm WarningDVNClinton61 min
Jun 14, 6:56 PM CDTSevere Thunderstorm WarningDVNHenry, Whiteside64 min
Jun 14, 7:00 PM CDTSevere Thunderstorm WarningDVNDubuque, Jackson45 min

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.3 hours before the alert went out and 148 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 2001-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 663 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 2001-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 216 square meters per square second.193958Sfc1 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
663 J/kg
Mixed-layer CIN
-210 J/kg
Mixed-layer LCL
1211 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
216 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 3:15 PM CDTSevere Thunderstorm WatchSPCBoone, Carroll, DeKalb, Kane, Lee, McHenry and 4 more6 hr
Jun 14, 6:30 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Champaign, Cook, DeKalb and 33 more6 hr
Jun 13, 7:30 PM CDTTornado WatchSPCClay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 2 more6 hr
Jun 13, 10:30 PM CDTSevere Thunderstorm WatchSPCAudubon, Boone, Butler, Calhoun, Carroll, Cerro Gordo and 24 more6 hr
Jun 14, 12:00 AM CDTTornado WatchSPCAdair, Adams, Cass, Fremont, Madison, Mills and 5 more5 hr
Jun 14, 3:30 PM CDTTornado WatchSPCAdair, Appanoose, Black Hawk, Boone, Bremer, Butler and 43 more6 hr
Jun 14, 5:45 PM CDTSevere Thunderstorm WatchSPCAllamakee, Clayton, Fayette, Winneshiek5 hr
Jun 14, 2:00 PM CDTSevere Thunderstorm WatchSPCAdair, Andrew, Barton, Bates, Benton, Boone and 51 more6 hr
Jun 14, 2:30 PM CDTTornado WatchSPCBarry, Christian, McDonald, Newton, Stone, Taney6 hr

Nearby

Severe Thunderstorm Watches in Iowa, 2001Severe Thunderstorm Watches in Illinois, 2001Severe Thunderstorm Watches in Missouri, 2001Every severe thunderstorm watch in 2001

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.