Severe Thunderstorm Warning 39, NWS North Platte, NE

Issued

May 21, 1999, 7:29 PM MDT (01:29 UTC)

Expired

May 21, 1999, 8:15 PM MDT

In force

46 min

Issued by

NWS North Platte, NE

Area

Whole counties

County Deuel County, NE

The North Platte radar (KLNX), 174 km from the middle of the area, began a volume at 01:30 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

999 
WUUS1 KLBF 220130 RRA
SVRLBF
NEC049-220215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
829 PM CDT (729 PM MDT) FRI MAY 21 1999

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DEUEL COUNTY IN THE NEBRASKA PANHANDLE

* UNTIL 815 PM MDT (915 PM CDT)

* AT 728 PM MDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 29 MILES EAST OF SIDNEY OR 19 MILES NORTHWEST OF BIG
  SPRINGS... MOVING EAST AT 25 MPH.

* DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  BIG SPRINGS                  BY 805 PM MDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

RLB

NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 2:53 PM MDT, 4 hours 36 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
353 PM CDT FRI MAY 21 1999

IN THE SHORT TERM...FOR TONIGHT...THETA E RIDGE SHOWING ITSELF NOW
ACROSS HIGH PLAINS.  AREA OF INSTABILITY WILL TRANSLATE EWD ACROSS
FCST AREA OVERNIGHT AND DURING THE DAY SATURDAY.  MESOETA SHOWS
CONVECTION HOLDING TOGETHER THIS EVENING ACROSS SW SOUTH
DAKOTA...THEN REIGNITING ACROSS NCNTL NEB SATURDAY AFTERNOON.
MEANWHILE...MODEL INDICATES THETA-E RIDGE WILL CONTINUE ACROSS
PANHANDLE AND AREA IS OUTLOOKED IN SWODY2.

OVERALL...MODEL TIME SECTIONS SHOW FAIRLY DISORGANIZED DYNAMICS AND
PCPN TRIGGERED MAINLY BY INSTABILITY.  BEST Q-G FORCING MOVES FCST
AREA BETWEEN 09Z-18Z SATURDAY.  AXIS OF MAXIMUM INSTABILITY
WILL PROBABLY BE S OF FCST AREA LATE SATURDAY AFTERNOON SO HAVE
TRENDED POPS TO 20S-30S AND 40S.

SATURDAY NIGHT AND SUNDAY...ALL MODELS AGREE ON CLEARING WITH SUNNY
DAY TO FOLLOW SUNDAY.  EXTENDED FCST CONTINUES TO SHOW RIDGING
ACROSS AREA WITH NEXT WEATHER SYSTEM AND CHANCE OF RAIN AGAIN ON
WEDNESDAY.

ACROSS WRN NEB...AVN LOOKS VERY MOIST SATURDAY MORNING AND THE FRONT
IS ALREADY WORKING THROUGH NORTHWEST FCST AREA.  AVN INDICATES
POSSIBLE NORTHWEST FLOW EVENT SATURDAY AFTERNOON-NIGHT...MAINLY OVER
ERN NEB/NE KS.  WITH JUST ONE MODEL TO GO BY...WILL PLAN ON SCT/WDLY
SCT POPS DAY2.  MODEL INDICATES ATM MAY BE CAPPED OVER WRN NEB AND
SYSTEM WILL BE SOMEWHAT STARVED FOR MOISTURE UNTIL AMPLIFIES AND DIGS
S INTO ERN NEB AND ERN KS.

ON INTO THE EXTENDED...SUNDAY A WEAK HIGH IS OVER WRN NEBRASKA
DURING THE DAYTIME.  SUNDAY NIGHT... A SECOND REINFORCING FRONT
AND ANOTHER CHANCE OF SHRA/TSTMS MOVES THROUGH.  MONDAY AND
TUESDAY...HIGH AND DRY.

.LBF...SEVERE THUNDERSTORM WATCH NEZ004 UNTIL 8 PM MDT.

COLE

Severe Thunderstorm Warnings in Nebraska, 1999Every severe thunderstorm warning in 1999

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