Alert archive / Wisconsin / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 451

May 28, 199814 counties in Illinois; 10 counties in Iowa; 28 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at May 28, 1998, 6:30 PM CDT for 14 counties in Illinois; 10 counties in Iowa; 28 counties in Wisconsin. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 28, 1998, 6:30 PM CDT (23:30 UTC)
Expired
May 29, 1998, 1:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 52 counties

Allamakee County, IA, Cedar County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Muscatine County, IA, Scott County, IA, Boone County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Jo Daviess County, IL, Kane County, IL, Lake County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Adams County, WI, Calumet County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Winnebago County, WI

The radar

The Milwaukee radar (KMKX), 111 km from the middle of the area, began a volume at 23:31 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

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

IssuedProductOfficeCountiesLasted
May 28, 6:31 PM CDTSevere Thunderstorm WarningARXCrawford, Vernon59 min
May 28, 6:37 PM CDTTornado WarningDVNBuchanan, Delaware48 min
May 28, 6:50 PM CDTSevere Thunderstorm WarningMKXLafayette55 min
May 28, 7:16 PM CDTSevere Thunderstorm WarningARXGrant59 min
May 28, 7:18 PM CDTSevere Thunderstorm WarningDVNDubuque32 min
May 28, 7:23 PM CDTSevere Thunderstorm WarningDVNJones62 min
May 28, 7:25 PM CDTSevere Thunderstorm WarningDVNDubuque65 min
May 28, 7:31 PM CDTSevere Thunderstorm WarningDVNCedar64 min
May 28, 7:38 PM CDTSevere Thunderstorm WarningARXVernon47 min
May 28, 7:43 PM CDTSevere Thunderstorm WarningMKXLafayette62 min
May 28, 7:45 PM CDTSevere Thunderstorm WarningDVNClinton, Jackson65 min
May 28, 7:58 PM CDTSevere Thunderstorm WarningMKXSauk52 min
May 28, 8:02 PM CDTSevere Thunderstorm WarningDVNJo Daviess63 min
May 28, 8:09 PM CDTTornado WarningARXAdams, Juneau46 min
May 28, 8:12 PM CDTSevere Thunderstorm WarningDVNCarroll, Rock Island, Whiteside63 min
May 28, 8:12 PM CDTSevere Thunderstorm WarningDVNScott63 min
May 28, 8:13 PM CDTSevere Thunderstorm WarningMKXColumbia, Green Lake, Marquette62 min
May 28, 8:23 PM CDTSevere Thunderstorm WarningDVNStephenson62 min
May 28, 8:27 PM CDTSevere Thunderstorm WarningMKXDane, Green63 min
May 28, 8:37 PM CDTTornado WarningDVNStephenson33 min
May 28, 8:55 PM CDTSevere Thunderstorm WarningARXAdams, Juneau60 min
May 28, 8:57 PM CDTSevere Thunderstorm WarningLOTLee, Ogle, Winnebago48 min
May 28, 9:22 PM CDTSevere Thunderstorm WarningMKXJefferson, Rock53 min
May 28, 9:26 PM CDTSevere Thunderstorm WarningLOTBoone, DeKalb55 min
May 28, 9:26 PM CDTSevere Thunderstorm WarningLOTBoone, DeKalb34 min
May 28, 9:27 PM CDTSevere Thunderstorm WarningMKXDodge, Fond du Lac63 min
May 28, 9:42 PM CDTSevere Thunderstorm WarningGRBWaushara, Winnebago63 min
May 28, 9:45 PM CDTSevere Thunderstorm WarningMKXWalworth, Waukesha60 min
May 28, 9:54 PM CDTSevere Thunderstorm WarningLOTKane, McHenry36 min
May 28, 9:58 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Racine62 min
May 28, 9:58 PM CDTSevere Thunderstorm WarningMKXKenosha62 min
May 28, 10:03 PM CDTSevere Thunderstorm WarningMKXSheboygan57 min
May 28, 10:04 PM CDTSevere Thunderstorm WarningGRBCalumet41 min
May 28, 10:11 PM CDTSevere Thunderstorm WarningLOTCook, DuPage, Lake, Will49 min
May 28, 10:54 PM CDTSevere Thunderstorm WarningLOTDeKalb, Kane36 min
May 28, 11:20 PM CDTSevere Thunderstorm WarningDVNCedar, Jones65 min
May 28, 11:53 PM CDTSevere Thunderstorm WarningDVNClinton, Scott62 min
May 29, 12:14 AM CDTSevere Thunderstorm WarningDVNClinton, Scott51 min

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.5 hours before the alert went out and 163 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 1998-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 530 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 1998-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
530 J/kg
Mixed-layer CIN
-213 J/kg
Mixed-layer LCL
961 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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
May 28, 3:00 PM CDTSevere Thunderstorm WatchSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 45 more5 hr
May 28, 4:00 PM CDTTornado WatchSPCAllamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 45 more5 hr
May 28, 12:00 AM CDTSevere Thunderstorm WatchSPCBuffalo, Burnett, Dunn, Pepin, Pierce, Polk and 1 more6 hr

Nearby

Severe Thunderstorm Watches in Wisconsin, 1998Severe Thunderstorm Watches in Illinois, 1998Severe Thunderstorm Watches in Iowa, 1998Every severe thunderstorm watch in 1998

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.