Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 42, NWS Des Moines, IA

June 30, 1993Decatur County, Ringgold County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 30, 1993, 12:21 AM CDT for Decatur County, Ringgold County, Iowa. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1993, 12:21 AM CDT (05:21 UTC)
Expired
Jun 30, 1993, 1:27 AM CDT
In force
66 min
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Decatur County, IA, Ringgold County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.4 hours before the alert went out and 208 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 00:00Z on 1993-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3751 joules per kilogram.LCLEL10008507005003002001001 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, Omaha, NE at 00:00Z on 1993-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.19395878Sfc1 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
3751 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1148 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
2.6
Supercell composite
16.2

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.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jun 29, 11:55 PM CDT, 26 minutes before
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Local storm report, Jun 29, 11:57 PM CDT, 24 minutes before
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Local storm report, Jun 29, 11:59 PM CDT, 22 minutes before
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Special weather statement, Jun 30, 12:15 AM CDT, 6 minutes before
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Special weather statement, Jun 30, 12:16 AM CDT, 5 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, Jun 30, 12:20 AM CDT, 1 minute before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 7:05 PM CDTTornado WarningDMXHumboldt, Pocahontas25 min
Jun 29, 7:18 PM CDTFlash Flood WarningDMXKossuth, Palo Alto, Pocahontas3 hr
Jun 29, 7:26 PM CDTSevere Thunderstorm WarningDMXWinnebago24 min
Jun 29, 7:27 PM CDTSevere Thunderstorm WarningDMXWebster33 min
Jun 29, 7:34 PM CDTSevere Thunderstorm WarningDMXHumboldt26 min
Jun 29, 8:01 PM CDTSevere Thunderstorm WarningDMXHamilton, Humboldt, Webster, Wright29 min
Jun 29, 8:17 PM CDTTornado WarningDMXCalhoun, Greene28 min
Jun 29, 8:23 PM CDTSevere Thunderstorm WarningDMXButler52 min
Jun 29, 8:38 PM CDTSevere Thunderstorm WarningDMXBoone37 min
Jun 29, 8:44 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Bremer, Grundy46 min
Jun 29, 8:44 PM CDTTornado WarningDMXCalhoun31 min
Jun 29, 8:50 PM CDTTornado WarningDMXBoone, Greene25 min
Jun 29, 8:53 PM CDTSevere Thunderstorm WarningDMXMarshall, Story52 min
Jun 29, 8:57 PM CDTTornado WarningDMXCrawford33 min
Jun 29, 9:01 PM CDTSevere Thunderstorm WarningDMXCarroll, Sac29 min
Jun 29, 9:20 PM CDTTornado WarningDMXJasper, Polk, Story25 min
Jun 29, 9:25 PM CDTSevere Thunderstorm WarningDMXBuchanan, Fayette65 min
Jun 29, 9:28 PM CDTSevere Thunderstorm WarningDMXBlack Hawk32 min
Jun 29, 9:36 PM CDTSevere Thunderstorm WarningDMXBenton, Tama54 min
Jun 29, 9:37 PM CDTSevere Thunderstorm WarningDMXDallas, Jasper, Polk68 min
Jun 29, 9:49 PM CDTSevere Thunderstorm WarningDMXMarshall26 min
Jun 29, 10:00 PM CDTTornado WarningDMXJasper, Polk26 min
Jun 29, 10:15 PM CDTFlash Flood WarningDMXBoone96 min
Jun 30, 3:01 PM CDTSevere Thunderstorm WarningDMXCass29 min

Nearby

Flash Flood Warnings in Iowa, 1993Every flash flood warning in 1993

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.