Alert archive / Nebraska / Flash Flood Warnings in 1999

Flash Flood Warning 8, NWS North Platte, NE

August 28, 1999Hayes County, Lincoln County, Perkins County, Nebraska

NWS North Platte, NE issued this flash flood warning at Aug 28, 1999, 9:45 PM CDT for Hayes County, Lincoln County, Perkins 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 counties it named.

The facts

Issued: Aug 28, 1999, 9:45 PM CDT (02:45 UTC)
Expired: Aug 29, 1999, 3:40 AM CDT
In force: 6 hr
Issued by: NWS North Platte, NE
Area: Whole counties

Counties Hayes County, NE, Lincoln County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 137 km from the middle of the area, began a volume at 02:49 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

Denver, CO (KDNR), launched 00:00Z, 2.8 hours before the alert went out and 205 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: 26 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 1651 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 38 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 
TTAA00 KLBF 280246
FFWLBF
NEC085-111-135-290840-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
945 PM CDT (845 PM MDT) SAT AUG 28 1999

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HAYES COUNTY IN SOUTHWESTERN NEBRASKA
  SOUTHWESTERN LINCOLN COUNTY IN SOUTHWESTERN NEBRASKA
  EASTERN PERKINS COUNTY IN SOUTHWESTERN NEBRASKA

* UNTIL 340 AM CDT (240 AM MDT)

* AT 933 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  WIDESPREAD THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUING TO MOVE
  OVER THE SAME AREAS OF HAYES COUNTY...SOUTHWEST LINCOLN
  COUNTY...AND EASTERN PERKINS COUNTY.

* NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED RAINFALL TOTALS
  OF 3 TO 5 INCHES HAD OCCURRED SINCE 6 PM CDT (5 PM MDT) OVER
  NORTHEAST PERKINS COUNTY...SOUTHWEST LINCOLN COUNTY AND NORTHERN
  HAYES COUNTY.  THERE MAY BE ISOLATED AREAS OF HIGHER RAIN
  AMOUNTS. PERSONS LIVING IN THOSE AREAS HAVE ESTIMATED THAT UP TO
  5 INCHES OF RAIN HAS FALLEN ALONG RED WILLOW CREEK. MORE RAIN WILL
  MOVE THROUGH THESE SAME AREAS OVERNIGHT AS A LARGE THUNDERSTORM
  COMPLEX SLOWLY MOVES EAST.

  SUBSTANTIAL RUNOFF WILL OCCUR THROUGH THE NIGHT TIME HOURS ALONG
  AND NEAR THE RED WILLOW CREEK.  AT 930 PM CDT...THE ROAD BETWEEN
  ELSIE AND PAXTON IN PERKINS COUNTY WAS REPORTED TO BE UNDER WATER.
  FURTHER FLOODING OF ROADWAYS AND CULVERTS IS LIKELY.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGER OF FLOODING. THE MAJORITY OF FLOOD-RELATED DEATHS OCCUR WHEN
PERSONS IN AUTOMOBILES ATTEMPT TO CROSS FLOODED ROADWAYS.

SLM

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS North Platte, NE wrote its last area forecast discussion before this flash flood warning went out at Aug 28, 8:12 PM CDT, 1 hour 33 minutes earlier.

Area forecast discussion, Aug 28, 8:12 PM CDT, 1 hour 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
812 PM CDT SAT AUG 28 1999

JUST UPDATED ZONES TO REMOVE WATCH AS IT EXPIRES ON TIME.  RADAR
ESTIMATED RAINFALL IS ABOUT DOUBLE WHAT GROUND TRUTH IS
INDICATING...ESPECIALLY IN AREAS WHERE WE HAD HAIL/SVR STORMS. PRECIP
APPEARS TO BE STRATIFYING. APPEARS ETA VERIFIED THE CLOSEST WITH THIS
EVENT AS FAR AS VORT FIELDS. MESOETA PRECIPT FIELDS PRETTY GOOD IN
DEFINING AREA...BUT APPEAR TO BE A BIT TOO SLOW MOVING SYSTEM ACROSS
INTO SOUTHWEST NEB.

.LBF...NONE.

SLM

In the hours before

Local storm report, Aug 28, 5:40 PM CDT, 4 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
540 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0515 PM    7 S HERSHEY               NE   1.00 INCH HAIL
08/28/99   LINCOLN

0505 PM    7 NNW BIG SPRINGS         NE   0.75 INCH HAIL
08/28/99   DEUEL

SLM

Local storm report, Aug 28, 5:40 PM CDT, 4 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
540 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0515 PM    7 S HERSHEY               NE   1.00 INCH HAIL
08/28/99   LINCOLN

0505 PM    7 NNW BIG SPRINGS         NE   0.75 INCH HAIL
08/28/99   DEUEL

SLM

Local storm report, Aug 28, 6:14 PM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
614 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    6 N GRANT                 NE   1.00 INCH HAIL
08/28/99   PERKINS

0540 PM    6 NNW BRULE               NE   0.75 INCH HAIL
08/28/99   KEITH

SLM

Local storm report, Aug 28, 6:14 PM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
614 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    6 N GRANT                 NE   1.00 INCH HAIL
08/28/99   PERKINS

0540 PM    6 NNW BRULE               NE   0.75 INCH HAIL
08/28/99   KEITH

SLM

Local storm report, Aug 28, 7:00 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
700 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    5 SW NORTH PLATTE         NE   0.75 INCH HAIL
08/28/99   LINCOLN

0645 PM    1 WSW IMPERIAL            NE   1.00 INCH HAIL
08/28/99   CHASE

SLM

Local storm report, Aug 28, 7:00 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
700 PM CDT SAT AUG 28 1999

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 PM    5 SW NORTH PLATTE         NE   0.75 INCH HAIL
08/28/99   LINCOLN

0645 PM    1 WSW IMPERIAL            NE   1.00 INCH HAIL
08/28/99   CHASE

SLM

Nearby

Flash Flood Warnings in Nebraska, 1999 Every flash flood warning in 1999

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.