Alert archive / Iowa / Tornado Watches in 1998

Tornado Watch 450

May 28, 199851 counties in Iowa; Crawford County, Wisconsin

The Storm Prediction Center issued this tornado watch at May 28, 1998, 4:00 PM CDT for 51 counties in Iowa; Crawford County, Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 28, 1998, 4:00 PM CDT (21:00 UTC)
Expired
May 28, 1998, 9:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 52 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cedar County, IA, Cerro Gordo County, IA, Cherokee County, IA, Chickasaw County, IA, Clay County, IA, Clayton County, IA, Crawford County, IA, Delaware County, IA, Dickinson County, IA, Dubuque County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Howard County, IA, Humboldt County, IA, Ida County, IA, Jones County, IA, Kossuth County, IA, Linn County, IA, Marshall County, IA, Mitchell County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Story County, IA, Tama County, IA, Webster County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Crawford County, WI

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 28, 4:08 PM CDTSevere Thunderstorm WarningDMXWebster37 min
May 28, 4:10 PM CDTSevere Thunderstorm WarningDMXHumboldt30 min
May 28, 4:25 PM CDTSevere Thunderstorm WarningDMXWright20 min
May 28, 4:28 PM CDTSevere Thunderstorm WarningDMXHamilton32 min
May 28, 4:32 PM CDTSevere Thunderstorm WarningARXChickasaw, Floyd58 min
May 28, 4:44 PM CDTTornado WarningDMXWright21 min
May 28, 4:53 PM CDTSevere Thunderstorm WarningARXWinneshiek62 min
May 28, 4:59 PM CDTSevere Thunderstorm WarningDMXHardin31 min
May 28, 5:26 PM CDTSevere Thunderstorm WarningDMXHardin34 min
May 28, 5:38 PM CDTSevere Thunderstorm WarningDVNBuchanan62 min
May 28, 5:44 PM CDTSevere Thunderstorm WarningARXAllamakee, Winneshiek61 min
May 28, 5:50 PM CDTTornado WarningARXAllamakee, Winneshiek60 min
May 28, 5:56 PM CDTSevere Thunderstorm WarningDMXHumboldt, Webster34 min
May 28, 5:58 PM CDTSevere Thunderstorm WarningARXFayette62 min
May 28, 6:01 PM CDTSevere Thunderstorm WarningDMXGrundy34 min
May 28, 6:02 PM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware63 min
May 28, 6:04 PM CDTSevere Thunderstorm WarningFSDO'Brien, Osceola31 min
May 28, 6:26 PM CDTSevere Thunderstorm WarningFSDClay34 min
May 28, 6:31 PM CDTSevere Thunderstorm WarningARXCrawford, Vernon59 min
May 28, 6:32 PM CDTFlash Flood WarningDVNBuchanan3 hr
May 28, 6:37 PM CDTTornado WarningDVNBuchanan, Delaware48 min
May 28, 6:42 PM CDTSevere Thunderstorm WarningFSDCherokee33 min
May 28, 6:45 PM CDTSevere Thunderstorm WarningDVNBenton65 min
May 28, 6:56 PM CDTSevere Thunderstorm WarningDVNLinn64 min
May 28, 7:04 PM CDTTornado WarningDVNLinn51 min
May 28, 7:12 PM CDTTornado WarningFSDCherokee33 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, 7:42 PM CDTSevere Thunderstorm WarningFSDBuena Vista33 min
May 28, 8:20 PM CDTSevere Thunderstorm WarningDMXSac20 min
May 28, 8:24 PM CDTSevere Thunderstorm WarningDMXCalhoun36 min
May 28, 8:40 PM CDTTornado WarningOAXMonona60 min
May 28, 8:57 PM CDTSevere Thunderstorm WarningDMXCalhoun, Webster33 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.0 hours before the alert went out and 235 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 1998-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 339 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, Minneapolis, MN at 12:00Z on 1998-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
339 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

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, 6:30 PM CDTSevere Thunderstorm WatchSPCAllamakee, Cedar, Clayton, Clinton, Delaware, Dubuque and 4 more7 hr
May 28, 12:00 AM CDTSevere Thunderstorm WatchSPCBuffalo, Burnett, Dunn, Pepin, Pierce, Polk and 1 more6 hr

Nearby

Tornado Watches in Iowa, 1998Tornado Watches in Wisconsin, 1998Every tornado 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.