Alert archive / Nebraska / Flash Flood Warnings in 2000

Flash Flood Warning 4, NWS North Platte, NE

July 6, 2000Boyd County, Keya Paha County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jul 6, 2000, 1:30 AM CDT for Boyd County, Keya Paha County, Nebraska. It was in force for 5 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 6, 2000, 1:30 AM CDT (06:30 UTC)
Expired: Jul 6, 2000, 6:45 AM CDT
In force: 5 hr
Issued by: NWS North Platte, NE
Area: Whole counties

Counties Boyd County, NE, Keya Paha County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 6.5 hours before the alert went out and 226 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2126 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1108 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 8.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLBF 060637
FFWLBF
NEC103-015-061145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
130 AM CDT THU JUL 6 2000

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA
  BOYD COUNTY IN NORTH CENTRAL NEBRASKA    

* UNTIL 645 AM CDT

* AT 130 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY
  HEAVY RAIN ALONG A LINE EXTENDING FROM NEAR SPRINGVIEW THROUGH 
  MILLS TO NAPER AND BUTTE. THE LINE OF THUNDERSTORMS PRODUCING THE
  HEAVY RAIN WAS MOVING NORTHEAST AT 10 MPH.

* THE FOLLOWING COMMUNITIES MAY BE AFFECTED BY THE FLASH FLOOD...
  SPRINGVIEW
  BURTON
  MILLS
  NAPER
  BUTTE
  SPENCER

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT BETWEEN 2 AND 
4 INCHES OF RAIN HAD FALLEN OVER PORTIONS OF THE WARNED AREA BETWEEN 
MIDNIGHT AND 130 AM CDT.  TOTAL RAINFALL IN SOME PORTIONS OF THE 
AREA MAY EXCEED SIX INCHES BEFORE STORMS MOVE EAST AND OUT OF THE 
AREA LATER TONIGHT.

RAPID RISES AND FLOODING OF SMALL STREAMS AND CREEKS IN THE WARNING 
AREA IS LIKELY FOR THE REST OF THE NIGHT.

FLASH FLOODING IS ESPECwIALLY DANGEROUS AT NIGHT WHEN IT IS HARDER TO
RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING
IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. YOU SHOULD
NOT DRIVE ON WATER COVERED ROADS!

$$

WERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:23 PM CDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln	67 min
Jul 5, 9:25 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	65 min
Jul 5, 9:34 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	56 min
Jul 6, 12:45 AM CDT	Flash Flood Warning	LBF	Holt	6 hr

Nearby

Flash Flood Warnings in Nebraska, 2000 Every 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.