Alert archive / Nebraska / Flash Flood Warnings in 2000

Flash Flood Warning 13, NWS Omaha, NE

July 6, 2000Antelope County, Madison County, Stanton County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 6, 2000, 12:22 AM CDT for Antelope County, Madison County, Stanton County, Nebraska. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 6, 2000, 12:22 AM CDT (05:22 UTC)
Expired
Jul 6, 2000, 6:30 AM CDT
In force
6 hr
Issued by
NWS Omaha, NE
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Antelope County, NE, Madison County, NE, Stanton County, NE

The radar

The Omaha radar (KOAX), 151 km from the middle of the area, began a volume at 05:26 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, 5.4 hours before the alert went out and 151 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 2000-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2000-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2284 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
236 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KOAX 060521
FFWOAX
NEC003-119-167-061115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1222 AM CDT THU JUL 6 2000

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ANTELOPE COUNTY IN NORTHEAST NEBRASKA
  MADISON COUNTY IN NORTHEAST NEBRASKA
  STANTON COUNTY IN NORTHEAST NEBRASKA

* UNTIL 630 AM CDT

* AT 1218 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA
  OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM AROUND NELIGH
  TO NORFOLK AND SOUTH OF STANTON.  THESE STORMS ARE MOVING TO THE
  SOUTHEAST AT 20 MPH.  THESE AREAS ALREADY HAD HEAVY RAIN ON
  WEDNESDAY...SO FLASH FLOODING IS LIKELY.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES.  ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS
AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.  A FEW
OF THE STREAMS WHICH MAY BE AFFECTED INCLUDE...CEDAR CREEK...TAYLOR
CREEK...UNION CREEK AND BATTLE CREEK.

RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. .DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 4242 9831 4194 9824 4175 9701 4208 9705
          4210 9781 4242 9788

MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 11:37 PM CDTSevere Thunderstorm WarningOAXDodge, Saunders38 min
Jul 5, 11:45 PM CDTSevere Thunderstorm WarningOAXAntelope45 min
Jul 6, 12:28 AM CDTSevere Thunderstorm WarningOAXMadison62 min
Jul 6, 12:32 AM CDTFlash Flood WarningOAXColfax, Dodge, Douglas, Saunders, Washington6 hr
Jul 6, 12:45 AM CDTSevere Thunderstorm WarningOAXDodge60 min
Jul 6, 2:34 AM CDTSevere Thunderstorm WarningOAXDodge, Saunders26 min

Nearby

Flash Flood Warnings in Nebraska, 2000Every flash flood warning 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.