Alert archive / Iowa / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 536

July 5, 200039 counties in Iowa; 28 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jul 5, 2000, 10:30 AM CDT for 39 counties in Iowa; 28 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 5, 2000, 10:30 AM CDT (15:30 UTC)
Expired
Jul 5, 2000, 3:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 67 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Otoe County, NE, Platte County, NE, Polk County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wheeler County, NE, York County, NE

The radar

The Omaha radar (KOAX), 34 km from the middle of the area, began a volume at 15:34 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

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

IssuedProductOfficeCountiesLasted
Jul 5, 10:42 AM CDTSevere Thunderstorm WarningDMXDallas, Madison33 min
Jul 5, 10:58 AM CDTSevere Thunderstorm WarningDMXPolk, Warren47 min
Jul 5, 10:59 AM CDTSevere Thunderstorm WarningOAXMadison, Platte61 min
Jul 5, 11:12 AM CDTSevere Thunderstorm WarningOAXAntelope, Boone33 min
Jul 5, 11:32 AM CDTSevere Thunderstorm WarningOAXStanton58 min
Jul 5, 11:40 AM CDTSevere Thunderstorm WarningOAXColfax65 min
Jul 5, 11:46 AM CDTSevere Thunderstorm WarningDMXMarion44 min
Jul 5, 11:52 AM CDTSevere Thunderstorm WarningOAXMadison, Platte38 min
Jul 5, 12:10 PM CDTSevere Thunderstorm WarningDMXMarion35 min
Jul 5, 12:20 PM CDTSevere Thunderstorm WarningDMXMahaska, Monroe40 min
Jul 5, 12:26 PM CDTSevere Thunderstorm WarningOAXDodge49 min
Jul 5, 12:32 PM CDTSevere Thunderstorm WarningOAXSaunders43 min
Jul 5, 12:53 PM CDTSevere Thunderstorm WarningDMXWapello47 min
Jul 5, 1:00 PM CDTFlash Flood WarningOAXBoone, Madison, Stanton4 hr
Jul 5, 1:03 PM CDTSevere Thunderstorm WarningOAXDouglas, Washington57 min
Jul 5, 1:08 PM CDTSevere Thunderstorm WarningOAXDodge, Saunders37 min
Jul 5, 1:16 PM CDTSevere Thunderstorm WarningOAXSarpy44 min
Jul 5, 1:33 PM CDTSevere Thunderstorm WarningOAXPottawattamie57 min
Jul 5, 1:50 PM CDTSevere Thunderstorm WarningOAXHarrison40 min
Jul 5, 2:02 PM CDTSevere Thunderstorm WarningDMXAdams43 min
Jul 5, 2:40 PM CDTFlash Flood WarningDMXAdams, Union6 hr
Jul 5, 2:57 PM CDTSevere Thunderstorm WarningOAXPage48 min

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 3.5 hours before the alert went out and 34 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, Omaha, NE at 12:00Z on 2000-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 945 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2000-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 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
945 J/kg
Mixed-layer CIN
-328 J/kg
Mixed-layer LCL
1164 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
184 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
Jul 5, 1:00 PM CDTSevere Thunderstorm WatchSPCDes Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more5 hr
Jul 5, 3:00 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Cass, Clarke, Davis and 9 more4 hr
Jul 5, 6:45 PM CDTSevere Thunderstorm WatchSPCArthur, Box Butte, Chase, Cheyenne, Dawes, Deuel and 15 more5 hr

Nearby

Severe Thunderstorm Watches in Iowa, 2000Severe Thunderstorm Watches in Nebraska, 2000Every severe thunderstorm watch in 2000

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.