Alert archive / Nebraska / Flash Flood Warnings in 1996

Flash Flood Warning 5, NWS Sioux Falls, SD

July 16, 1996Dakota County, Dixon County, Nebraska

NWS Sioux Falls, SD issued this flash flood warning at Jul 16, 1996, 10:13 PM CDT for Dakota County, Dixon County, Nebraska. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 16, 1996, 10:13 PM CDT (03:13 UTC)
Expired
Jul 17, 1996, 1:15 AM CDT
In force
3 hr
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Dakota County, NE, Dixon County, NE

The radar

The Sioux Falls radar (KFSD), 127 km from the middle of the area, began a volume at 03:13 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.2 hours before the alert went out and 128 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 1996-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1921 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 1996-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.1939Sfc1 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
1921 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFSD 170313
FFWFSD
NEC043-051-170615-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1013 PM CDT TUE JUL 16 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 115 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...

IN NORTHEAST NEBRASKA

   ...DAKOTA COUNTY
   ...DIXON COUNTY
 
STRONG THUNDERSTORMS CONTINUE TO MOVE ACROSS EXTREME
NORTHEAST NEBRASKA. DOPPLAR RADAR ESTIMATES RAINFALL UP TO 2 1/2
INCHES HAVE FALLEN SINCE 9 PM CDT IN NORTHERN DIXON COUNTY. RAINFALL
AMOUNTS OF 1 TO 3 INCHES HAVE FALLEN EARLY THIS EVENING IN PART
OF DIXON AND DAKOTA COUNTIES.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!
 
IF FLASH FLOODING IS OBSERVED...ACT QUICKLY.  MOVE TO ESCAPE FLOOD
WATERS.  DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS
RISING.

BLOOM

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 16, 7:04 PM CDTSevere Thunderstorm WarningFSDDakota31 min
Jul 16, 9:21 PM CDTSevere Thunderstorm WarningFSDDixon34 min
Jul 16, 9:55 PM CDTFlash Flood WarningFSDDixon35 min
Jul 16, 9:55 PM CDTSevere Thunderstorm WarningFSDDixon35 min
Jul 16, 10:52 PM CDTSevere Thunderstorm WarningFSDDakota33 min
Jul 16, 11:31 PM CDTSevere Thunderstorm WarningFSDDixon34 min
Jul 17, 1:28 AM CDTFlash Flood WarningFSDDakota3 hr
Jul 17, 1:28 AM CDTFlash Flood WarningFSDDixon3 hr

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; radar from the NEXRAD Level II archive.