Severe Thunderstorm Warning 185, NWS North Platte, NE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
247 PM CDT THU JUL 2 1998

...FORECAST PROBLEM WILL BE POPS...

UPPER PATTERN HAS NOT CHANGED WITH 500 RIDGE OVER CENTRAL U.S. AND
TROUGH IN WESTERN U.S. 500 RIDGE STILL IN FIRM CONTROL WITH WEAK
SHORTWAVES MOVING THROUGH THE RIDGE. POPS ARE POSSIBLE THRU THE
PERIOD.

PROBLEMS THROUGH THE PERIOD WILL BE POPS. 700 AND 850 THTE RIDGES
REMAIN STATIONARY ACROSS CWA THRU 48 HOURS WITH LLJ THROUGH THE PERIOD.
LMVV FROM ETA AND NGM IN 850-700...700-500 AND 500-300 LAYERS HINT AT
MCS TOMORROW NIGHT IN EASTERN NEBRASKA AND NEAR BLACK HILLS WHICH WOULD
MOVE ACROSS NORTHERN NEBRASKA WITH UPWARD VERTICAL VELOCITIES WITH LMRH
VALUES IN 40-60 PERCENT. LMVV NOT VERY ORGANIZED TONIGHT THOUGH. Q
VECTORS NOT VERY ORGANIZED EITHER IN THE 850-700...700-500 AND 500-300
LAYERS THROUGH THE PERIOD. 18Z SFC CHART SHOWED LOW OVER SE CO WITH
WARM FRONT OVER SW KS INTO OKC THROUGH LIT WITH DEW POINTS IN THE 60S
ACROSS CWA. UPSLOPE FLOW WILL CONTINUE THROUGH THE PERIOD WITH 850 DEW
POINTS OF 8-16 DEGREES THROUGH THE PERIOD WITH ETA SHOWING PRETTY
POTENT 850 WARMFRONT WITH GOOD CONVERGENCE OVER HSI CWA AT 36 HOURS.
CAPE VALUES TONIGHT IN 1000-2000 J/KG RANGE WITH CIN IN -40 IN THE WEST
TO -80 IN THE EAST. CAPE TOMORROW NIGHT AT 00Z IN 700-2500 J/KG RANGE
WITH CIN VALUES -40 IN SOUTH TO -100 IN NORTHWEST. WITH THIS IN
MIND...FEEL THERE IS THREAT OF HEAVY RAINFALL THROUGH THE PERIOD. WILL
GO HIGHEST POPS IN NE CWA WITH 50 TONIGHT AND LOWER POPS ELSEWHERE AND
GO HIGH POPS IN NORTH TOMORROW NIGHT FOR POSSIBLE MCS IN BLACK HILLS
AND EASTERN NEB. FEEL SOUTH COULD BE CAPPED AND WILL GO LOWEST POPS DUE
TO 700 TEMPS IN 13-16 DEGREE RANGE TOMORROW ACROSS CWA.

PRELIMINARY GUIDANCE FOR COORDINATION ONLY.  OFFICIAL FORECASTS ARE
CONTAINED WITHIN PRODUCT OMAZFPNE.

CCF
LBF BB 065/091 064/091 066 703231  ANW BB 066/088 066/085 067 705352
OGA BB 065/091 064/091 066 703231  ONL BB 06Z7/088 067/084 067 705352
IML BB 066/092 065/092 067 703231  BBW BB 066/090 066/088 067 704242
VTN BB 065/089 064/085 066 704242

MICHELS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
1050 PM CDT WED JUL 02 1998

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

1004 PM    5N 1W VALENTINE           NE   1.75 INCH HAIL
07/01/98   CHERRY

1030 PM    VALENTINE                 NE   0.75 INCH HAIL
06/29/98   CHERRY

BUTLER

NEZ022-030550-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1221 AM CDT (1121 PM MDT) FRI JUL 3 1998

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELED FOR GARDEN
COUNTY...

AT 1220 AM CDT...NORTH PLATTE DOPPLER RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS HAD MOVED EAST OF GARDEN COUNTY THEREFORE THE
WARNING HAS BEEN CANCELLED. OCCASIONAL RAIN WILL CONTINUE WITH
LOCALIZED HEAVY RAIN POSSIBLE.

KB

NEZ004-030540-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1239 AM CDT (1139 PM MDT) FRI JUL 3 1998

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SHERIDAN COUNTY
WILL BE ALLOWED TO EXPIRE...

AT 1239 AM CDT...NORTH PLATTE DOPPLER RADAR INDICATED THAT THE
SEVERE THUNDERSTORM HAD MOVED EAST AND WAS NO LONGER A THREAT
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

KB

NEZ022-056-030625-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
118 AM CDT (1218 AM MDT) FRI JUL 3 1998

...SEVERE THUNDERSTORM WATCH CANCELLED FOR PART OF THE EASTERN
NEBRASKA PANHANDLE...

AT 115 AM CDT SEVERE THUNDERSTORM WATCH NUMBER 717 ISSUED EARLIER
FOR SOUTHWEST NEBRASKA HAS BEEN CLEARED FOR GARDEN AND DEUEL
COUNTIES. THE WATCH WILL CONTINUE UNTIL 400 AM CDT FOR THE REST OF
CENTRAL AND SOUTHWEST NEBRASKA.

SPRINGER