Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 52, NWS North Platte, NE

May 22, 1999Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 22, 1999, 5:01 PM CDT for Custer County, Nebraska. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 22, 1999, 5:01 PM CDT (22:01 UTC)
Expired: May 22, 1999, 5:45 PM CDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Custer County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 22:00 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
May 22, 5:02 PM CDT	Hail 0.75	Broken Bow, NE

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 22, 4:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 79 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: 333 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

999 
WUUS1 KLBF 222159 RRA
SVRLBF
NEC041-222245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
501 PM CDT SAT MAY 22 1999

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL AND EASTERN CUSTER COUNTY IN CENTRAL NEBRASKA

* UNTIL 545 PM CDT

* AT 500 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A LINE
  OF SEVERE THUNDERSTORMS FROM 15 MILES NORTHWEST TO 20 MILES EAST
  OF BROKEN BOW...MOVING SOUTHEAST AT 25 MPH.

* DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  BROKEN BOW BY 530 PM CDT.

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

JRS/DDB

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 22, 3:43 PM CDT, 1 hour 18 minutes earlier.

Area forecast discussion, May 22, 3:43 PM CDT, 1 hour 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
343 PM CDT SAT MAY 22 1999

...VOLATILE WEATHER EVENT UNDERWAY...

MESOETA INDICATES RICH THETA-E AIR WILL DROP SWD WITH THE COLD FRONT
ACROSS NORTH CNTL AND NW NEB BY 06Z.  THEREAFTER GRADUAL CLEARING
SHOULD BE UNDERWAY WITH NORTH WINDS... SUBSIDENCE AND DRYING.  SUNDAY
LOOKS SUNNY AND DRIER WITH RIDGE CONTINUE TO BUILD IN ACROSS ERN
2/3 OF FCST AREA.  STILL SOME RESIDUAL CLOUDINESS AND MOISTURE ACROSS
THE EASTERN PANHANDLE AT 700 MB.  ALSO...WEAK UP SLOPE FLOW WILL
CONTINUE TO PRODUCE SHRAS THROUGH 15Z AND MOSTLY CLOUDY SKIES INTO
THE EARLY AFTERNOON.

ALL MODELS ADVERTISE CLEAR SKIES FOR SUNDAY NIGHT WITH THE MIDLEVEL
RIDGE WHICH SHOULD LAST INTO MONDAY.  BY MONDAY NIGHT THE UPPER LOW
ACROSS SWRN U.S. SHOULD BEGIN TO LIFT OUT WITH WEAK RETURN ACROSS
WRN HIGH PLAINS.  ATTM TUES EXTENDED FCST SHOULD HOLD.

.LBF...NEZ022-056 TORNADO WATCH UNTIL 9 PM MDT
       NEZ008>010-015-026>029-103-113-171 SEVERE THUNDERSTORM WATCH
       UNTIL 10 PM CDT.

COLE

In the hours before

Local storm report, May 22, 3:59 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
359 PM CDT SAT MAY 22 1999

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

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
05/22/99   BLAINE

FWM

Local storm report, May 22, 3:59 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
359 PM CDT SAT MAY 22 1999

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

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
05/22/99   BLAINE

FWM

Local storm report, May 22, 4:46 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
446 PM CDT SAT MAY 22 1999

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

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
05/22/99   BLAINE

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0410 PM    1 W ALMERIA               NE   0.75 INCH HAIL
05/22/99   LOUP

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

FWM

Local storm report, May 22, 4:46 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED FOR DUPLICATE REPORTS
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
446 PM CDT SAT MAY 22 1999

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

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
5/22/99    BLAINE

0410 PM    1 W ALMERIA               NE   0.75 INCH HAIL
05/22/99   LOUP

FWM

Local storm report, May 22, 4:46 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
446 PM CDT SAT MAY 22 1999

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

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
05/22/99   BLAINE

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0410 PM    1 W ALMERIA               NE   0.75 INCH HAIL
05/22/99   LOUP

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

FWM

Local storm report, May 22, 4:46 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED FOR DUPLICATE REPORTS
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
446 PM CDT SAT MAY 22 1999

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

0345 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0130 PM    7 SSE BREWSTER            NE   0.88 INCH HAIL
05/22/99   BLAINE

0345 PM    12 N STAPLETON            NE   1.00 INCH HAIL
05/22/99   LOGAN

0340 PM    17 SE THEDFORD            NE   1.25 INCH HAIL
05/22/99   THOMAS

0200 PM    3 W ROSE                  NE   0.88 INCH HAIL
05/22/99   ROCK

0440 PM    15 NW MERNA               NE   1.50 INCH HAIL
05/22/99   CUSTER

0325 PM    3 NW BREWSTER             NE   0.75 INCH HAIL
5/22/99    BLAINE

0410 PM    1 W ALMERIA               NE   0.75 INCH HAIL
05/22/99   LOUP

FWM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:04 PM CDT	Severe Thunderstorm Warning	LBF	Garden	46 min
May 21, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Deuel	46 min
May 22, 1:22 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	48 min
May 22, 1:39 PM CDT	Severe Thunderstorm Warning	LBF	Rock	46 min
May 22, 1:44 PM CDT	Severe Thunderstorm Warning	LBF	Loup	61 min
May 22, 2:11 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	34 min
May 22, 2:18 PM CDT	Severe Thunderstorm Warning	LBF	Custer	32 min
May 22, 2:35 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	45 min
May 22, 2:38 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	62 min
May 22, 3:03 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	62 min
May 22, 3:10 PM CDT	Severe Thunderstorm Warning	LBF	Logan, Thomas	50 min
May 22, 3:21 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	59 min
May 22, 3:52 PM CDT	Severe Thunderstorm Warning	LBF	Loup	63 min
May 22, 3:55 PM CDT	Severe Thunderstorm Warning	LBF	Custer	65 min
May 22, 6:31 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	49 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1999 Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.