Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 23, NWS Omaha, NE

July 13, 19934 counties in Iowa

NWS Omaha, NE issued this flash flood warning at Jul 13, 1993, 6:50 AM CDT for 4 counties in Iowa. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 13, 1993, 6:50 AM CDT (11:50 UTC)
Expired
Jul 13, 1993, 10:00 AM CDT
In force
3 hr
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 11.8 hours before the alert went out and 96 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 1993-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 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, Omaha, NE at 00:00Z on 1993-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
42 J/kg
Mixed-layer CIN
-330 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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.

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 5:21 PM CDTSevere Thunderstorm WarningOAXLancaster, Saline33 min
Jul 13, 6:44 PM CDTFlash Flood WarningOAXLancaster, Seward3 hr
Jul 13, 6:50 AM CDTFlash Flood WarningOAXPottawattamie3 hr

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.