Alert archive / Nebraska / Flash Flood Warnings in 1996

Flash Flood Warning 39, NWS Omaha, NE

August 19, 1996Richardson County, Nebraska

NWS Omaha, NE issued this flash flood warning at Aug 19, 1996, 6:45 PM CDT for Richardson County, Nebraska. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 19, 1996, 6:45 PM CDT (23:45 UTC)
Expired
Aug 19, 1996, 7:30 PM CDT
In force
45 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Richardson County, NE

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.8 hours before the alert went out and 125 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, Topeka, KS at 12:00Z on 1996-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1396 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, Topeka, KS at 12:00Z on 1996-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
1396 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
1085 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
99 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.

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

Special weather statement, Aug 19, 6:28 PM CDT, 17 minutes before
IAZ090-079-080-091-NEZ067-089-088-090-066-091-068-092-093-078-065-
200000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
625 PM CDT MON AUG 19 1996

...PART OF SEVERE THUNDERSTORM WATCH 969 NO LONGER IN EFFECT...
...PART OF SEVERE THUNDERSTORM WATCH 970 NO LONGER IN EFFECT...

SEVERE THUNDERSTORM WATCH 969 IS NO LONGER IN EFFECT FOR THE FOLLOWING
COUNTIES IN SOUTHEAST NEBRASKA.  SEWARD...LANCASTER...CASS AND SALINE.
THUNDERSTORMS HAVE GENERALLY MOVED OUT OF THESE COUNTIES.  THE WATCH
CONTINUES FOR JEFFERSON...GAGE...OTOE...JOHNSON...NEMAHA..PAWNEE AND
RICHARDSON UNTIL 10 PM.

SEVERE THUNDERSTORM WATCH 970 IS NO LONGER IN EFFECT FOR THE FOLLOWING
COUNTIES IN SOUTHWhEST IOWA.  MILLS AND MONTGOMERY.  THE WATCH CONTINUES
FOR FREMONT AND PAGE COUNTIES UNTIL 10 PM.

MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 3:27 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson63 min
Aug 19, 4:19 PM CDTFlash Flood WarningOAXJefferson5 hr
Aug 19, 5:14 PM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Pawnee61 min
Aug 19, 5:40 PM CDTSevere Thunderstorm WarningOAXPawnee, Richardson65 min
Aug 19, 5:41 PM CDTFlash Flood WarningOAXJohnson, Nemaha, Pawnee4 hr
Aug 19, 5:41 PM CDTFlash Flood WarningOAXRichardson4 hr
Aug 19, 6:45 PM CDTSevere Thunderstorm WarningOAXRichardson45 min

Nearby

Flash Flood Warnings in Nebraska, 1996Every flash flood warning in 1996

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.