Alert archive / Nebraska / Flash Flood Warnings in 2015

Flash Flood Warning 4, NWS North Platte, NE

July 25, 2015Chase County, Hayes County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jul 25, 2015, 5:09 PM MDT for Chase County, Hayes County, Nebraska. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 25, 2015, 5:09 PM MDT (23:09 UTC)
Expired: Jul 25, 2015, 8:15 PM MDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

Counties Chase County, NE, Hayes County, NE

The radar

The Goodland radar (KGLD), 123 km from the middle of the area, began a volume at 23:11 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.

What was reported inside it

Time	Report	Where	Remark
Jul 25, 6:04 PM MDT	HEAVY RAIN 2.5	1 S Wauneta, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.2 hours before the alert went out and 99 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: 181 J/kg
Mixed-layer CIN: -343 J/kg
Mixed-layer LCL: 1375 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

162 
WGUS53 KLBF 252309
FFWLBF
NEC029-085-260215-
/O.NEW.KLBF.FF.W.0004.150725T2309Z-150726T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
609 PM CDT SAT JUL 25 2015

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN CHASE COUNTY IN SOUTHWESTERN NEBRASKA...
  SOUTHWESTERN HAYES COUNTY IN SOUTHWESTERN NEBRASKA...

* UNTIL 915 PM CDT/815 PM MDT/
    
* AT 608 PM CDT /508 PM MDT/...DOPPLER RADAR INDICATED THUNDERSTORMS 
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATES 2 TO 
  3 INCHES OF RAIN HAS FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN 
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WAUNETA AND HAMLET. 

ADDITIONAL RAINFALL AMOUNTS OF AROUND AN INCH ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4036 10148 4054 10148 4055 10147 4055 10105
      4035 10104 4035 10135

$$

BUTTLER

2 follow-up statements

587 
WGUS73 KLBF 260050
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
750 PM CDT SAT JUL 25 2015

NEC029-085-260215-
/O.CON.KLBF.FF.W.0004.000000T0000Z-150726T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHASE NE-HAYES NE-
750 PM CDT SAT JUL 25 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM CDT/815 PM
MDT/ FOR SOUTHEASTERN CHASE AND SOUTHWESTERN HAYES COUNTIES...

AT 747 PM CDT /647 PM MDT/...DOPPLER RADAR ESTIMATES ALONG WITH THE 
PUBLIC...REPORTED 2 TO 3 INCHES OF RAIN HAD FALLEN OVER FAR 
SOUTHEASTERN CHASE AND FAR SOUTHWESTERN HAYES COUNTY IN A SHORT 
PERIOD OF TIME. FLOODING OF CANYONS AND DRY WASHES REMAINS POSSIBLE 
IN THESE AREAS FOR THE NEXT 1 TO 2 HOURS. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WAUNETA AND HAMLET. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4036 10148 4054 10148 4055 10147 4055 10105
      4035 10104 4035 10135

$$

BUTTLER

041 
WGUS73 KLBF 260222
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
922 PM CDT SAT JUL 25 2015

NEC029-085-260225-
/O.EXP.KLBF.FF.W.0004.000000T0000Z-150726T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHASE NE-HAYES NE-
922 PM CDT SAT JUL 25 2015

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN CHASE AND SOUTHWESTERN
HAYES COUNTIES HAS EXPIRED...

RUNOFF FROM HEAVY RAIN EARLIER THIS EVENING...HAS DECREASED 
SIGNIFICANTLY...THUS THE THREAT FOR FLASH FLOODING HAS ENDED ACROSS 
SOUTHEASTERN CHASE AND SOUTHWESTERN HAYES COUNTY. 

IF FLASH FLOODING WAS OBSERVED...CONTACT LOCAL LAW ENFORCEMENT AND 
HAVE THEM PASS THE REPORT ON TO THE NATIONAL WEATHER SERVICE IN 
NORTH PLATTE. 

LAT...LON 4036 10148 4054 10148 4055 10147 4055 10105
      4035 10104 4035 10135

$$

BUTTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 6:20 PM MDT	Special Weather Statement	LBF	Lincoln	40 min
Jul 24, 6:23 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	37 min
Jul 24, 6:50 PM MDT	Special Weather Statement	LBF	Lincoln	25 min
Jul 24, 6:59 PM MDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	31 min
Jul 24, 7:12 PM MDT	Special Weather Statement	LBF	Chase	48 min
Jul 24, 7:24 PM MDT	Special Weather Statement	LBF	Custer	51 min
Jul 24, 7:36 PM MDT	Areal Flood Advisory	LBF	Lincoln	3 hr
Jul 24, 7:41 PM MDT	Areal Flood Advisory	LBF	Custer	3 hr
Jul 24, 7:48 PM MDT	Severe Thunderstorm Warning	LBF	Custer	27 min
Jul 25, 4:35 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes	40 min

Nearby

Flash Flood Warnings in Nebraska, 2015 Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.