Alert archive / Nebraska / Flash Flood Warnings in 2005

Flash Flood Warning 18, NWS North Platte, NE

July 10, 2005Sheridan County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jul 10, 2005, 10:25 PM MDT for Sheridan 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 outline as issued.

The facts

Issued: Jul 10, 2005, 10:25 PM MDT (04:25 UTC)
Expired: Jul 11, 2005, 1:30 AM MDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 147 km from the middle of the area, began a volume at 04:27 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

Rapid City, SD (KUNR), launched 00:00Z, 4.4 hours before the alert went out and 142 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: 1205 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLBF 110425
FFWLBF
NEC161-110730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1025 PM MDT SUN JUL 10 2005

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN SHERIDAN COUNTY IN THE PANHANDLE OF NEBRASKA
  THIS INCLUDES THE CITY OF GORDON

* UNTIL 130 AM MDT

* AT 1022 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER
  MAINLY RURAL AREAS OF THE INDICATED COUNTY.

ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE 
WARNED AREA AS ANOTHER CLUSTER OF SLOW MOVING STORMS MOVES THROUGH 
NORTHERN SHERIDAN COUNTY FRO 11 PM TO MIDNIGHT MDT.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 4274 10274 4269 10208 4298 10212 4297 10272

$$

SPRINGER

1 follow-up statement

000 
WGUS73 KLBF 110555
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1253 AM CDT MON JUL 11 2005

NEC161-110730-
SHERIDAN NE-
1153 PM MDT SUN JUL 10 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 130 AM MDT FOR NORTHERN
SHERIDAN COUNTY...

AT 1143 PM MDT...THE HEAVY RAIN HAS ENDED ACROSS ALL OF SHERIDAN 
COUNTY. PERIODS OF LIGHT RAIN WILL CONTINUE OVERNIGHT. LESS THAN 1/4 
INCH ADDITIONAL RAINFALL IS LIKELY THROUGH 130 AM MDT.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. SOME UNPAVED ROADS MAY BE PARTIALLY OR TOTALLY 
WASHED OUT AND IMPASSABLE. USE CAUTION TRAVELING.

LAT...LON 4274 10274 4269 10208 4298 10212 4297 10272

$$

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 6:43 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	62 min
Jul 10, 7:44 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	37 min
Jul 10, 8:03 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	57 min
Jul 10, 10:15 PM MDT	Flash Flood Warning	LBF	Sheridan	30 min
Jul 10, 11:31 PM MDT	Severe Thunderstorm Warning	LBF	Perkins	59 min
Jul 11, 5:29 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Grant, Hooker, McPherson	31 min

Nearby

Flash Flood Warnings in Nebraska, 2005 Every flash flood warning in 2005

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.