Severe Thunderstorm Warning 15, NWS Hastings, NE

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
110 PM CDT FRI APR 6 2001

MRNG UAA ILLUSTRATES POTENTIAL OF EMERGING SWRN STATES SYS WITH 100
KT 500 MB OVR EPZ/ARND -25C IN THE BASE OF THE TROF.  125 KT AT 300
MB WERE BEELINED ON THE CNTRL PLNS.  LLVL IS IN PLACE WITH DRYLINE
ACRS WRN KS AND FALLING PRES OVR ERN CO.  ALSO OF INTEREST IS THE
MAGNITUDE OF THE HT FALLS WITH THE KICKER MOVG ASHORE THIS MRNG...
WITH 200 M DROP AT 300MB ALONG THE PAC NW COAST.

88-D SHOWING SOME FAST MOVING...AND RAPIDLY DVLPG STORMS THREATENING
THE KS CWA.  NEAR WARM FRONT WHICH LIFTED INTO N CNTL KS EARLY THIS
AFTN.  POTENTIAL FOR SVR ALONG AND JUST N OF THE FRONT RMNS AS
ISENTROPIC LIFT INTENSIFIES...UNDR INCRSG SPPRT ALOFT. DRY LINE ON
THE HIGH PLNS WL ALSO BE A FOCUS AREA WITH THREAT OF STORM FIRING...
MOVING RAPIDLY NEWD AND XG THE HIGH HELICITY AREA OF THE WARM FRONT.
TORNADO THREAT WL CONTINUE INTO THE EVE. CONDITIONS WL IMPROVE
BY/SHRTLY AFTR MIDNGT AS MID LVL LOW MOVS NE OF THE AREA.

SAT...WINDY CONDITIONS WL IMPROVE FM THE S IN THE WAKE OF THE LOW...
AND WITH PLENTY OF INSOLATION AND DOWNSLOPE...NR 70 FOR MOST OF
THE AREA IS REASONABLE.  PATTERN OF W COAST TROF/SWLY FLOW OVR THE
PLNS WL CONT IN THE LATTER PDS AND EFP.  META PROGS THE SFC BNDRY
INTO THE NRN CWA ON SUN...RESULTING IN A FAIRLY TIGHT TEMP GRADIENT
OVR THE CWA.  WL PERSIST WITH LOW 70S S...AND ADJUST DOWNWARD TO LWR
60S N.

IN THE EFP...NO CHANGES NEEDED AS SYS XS THE GREAT BASIN AND EMERGES
ON THE PLNS AT MID WEEK.  00Z CANADIAN IS A BIT SLOWER THAN MRF...BUT
WL NOT CHANGE TIMING AT THIS STAGE OF THE GAME.

.GID...NONE.

09

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
359 PM CDT FRI APR 06 2001

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

0255 PM    FUNK                      NE   1.00 INCH HAIL
04/06/01   PHELPS

0305 PM    KEARNEY                   NE    .75 INCH HAIL
04/06/01   BUFFALO

0310 PM    4 E HOLDREGE              NE    .75 INCH HAIL
04/06/01   PHELPS

0355 PM    2 NE COTESFIELD           NE    .75 INCH HAIL
04/06/01   HOWARD

SC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
421 PM CDT FRI APR 06 2001

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

0400 PM    1 S RAVENNA               NE   1.00 INCH HAIL
04/06/01   BUFFALO

0415 PM    3 W FARWELL               NE    .75 INCH HAIL
04/06/01   HOWARD

SC

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-070200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
550 PM CDT FRI APR 6 2001

...SPOTTER ACTIVATION MAY STILL BE NEEDED THIS EVENING ACROSS SOUTH
CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS...

THE FIRST WAVE OF STORMS EXITED CENTRAL NEBRASKA LATE THIS
AFTERNOON. HOWEVER...SPOTTERS SHOULD STAY ALERT AS MORE STORMS ARE
ON THE WAY.

A SECOND ROUND OF THUNDERSTORMS HAD DEVELOPED IN WESTERN KANSAS
LATE THIS AFTERNOON AND THESE STORMS ARE EXPECTED TO MOVE
NORTH NORTHEAST INTO PARTS OF NORTH CENTRAL KANSAS AND SOUTH CENTRAL
NEBRASKA AFTER 7 PM. THE FIRST AREAS AFFECTED SHOULD BE IN THE
WESTERN PART OF THE COUNTY WARNING AREA...FROM STOCKTON KANSAS TO
GOTHENBURG NEBRASKA. HOWEVER...WITH THE RAPID MOVEMENT OF THE
STORMS...SPOTTERS ACROSS THE AREA NEED TO STAY ALERT.

THESE STORMS HAVE DEVELOPED AHEAD OF THE MAIN UPPER LOW PRESSURE
SYSTEM THAT HAD BEGUN TO LIFT NORTH OUT OF THE ROCKIES INTO THE
CENTRAL PLAINS. MEANWHILE THE SURFACE FRONT WAS STILL STRETCHED
WEST TO EAST ACROSS THE NEBRASKA KANSAS BORDER LATE THIS AFTERNOON.
AS THE LINE OF THUNDERSTORMS IN WESTERN KANSAS LIFTS NORTH OVER THE
FRONT THIS EVENING...THE ALREADY STRONG WIND SHEAR WILL BE ENHANCED
WHICH WILL HELP INCREASE THE CHANCES FOR LARGE HAIL AND TORNADOES TO
FORM. DAMAGING WINDS ARE ALSO LIKELY WITH THIS LINE OF STORMS.

A TORNADO WATCH REMAINS IN EFFECT OVER MUCH THE AREA UNTIL 9 PM.
HOWEVER...SPOTTERS SHOULD BE AWARE THAT SEVERE WEATHER COULD STILL
OCCUR IN THE AREA AFTER 9 PM AND ADDITIONAL SEVERE WEATHER WATCHES
MAY BE ISSUED LATER IN THE EVENING.

EWALD

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-070100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
728 PM CDT FRI APR 6 2001

...TORNADO WATCH IS IN EFFECT UNTIL 1 AM...

THE STORM PREDICTION CENTER HAS ISSUED A NEW TORNADO WATCH WHICH
COVERS ALL COUNTIES IN SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL
KANSAS.  THIS TORNADO WATCH...NUMBER 100...REPLACES WATCH NUMBER 96
WHICH WAS ISSUED THIS AFTERNOON AND WAS SET TO EXPIRE AT 9 PM CDT.

SEVERE THUNDERSTORMS WITH DAMAGING WIND GUSTS TO 80 MPH...LARGE
HAIL AND ISOLATED TORNADOES ARE POSSIBLE IN THE WATCH AREA WHICH IS
IN EFFECT UNTIL 1 AM.

DROZD