Severe Thunderstorm Warning 140, NWS Goodland, KS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
230 PM MDT THU JUN 22 2006

.DISCUSSION...MAIN FORECAST PROBLEM WILL BE CHANCE OF PRECIPITATION
THROUGH THE PERIOD. SATELLITE SHOWING A PROGRESSIVE FLOW FROM THE
EASTERN PACIFIC INTO THE WESTERN ATLANTIC. HOWEVER...FLOW OVER THE
CENTRAL PACIFIC HAS BEGUN TO AMPLIFY AND RETROGRESS. THIS WILL
PROBABLY HERALD THE CHANGE TO THE AMPLIFIED PATTERN OVER THE COUNTRY
THAT HAS BEEN PROGGED BY THE MODELS. THREE SHORTWAVES TO NOTE IN THE
PROGRESSIVE FLOW. FIRST ONE IS MOVING IN FROM SOUTHEAST WYOMING AND
WESTERN NEBRASKA. SECOND ONE WAS MOVING THROUGH THE PACIFIC
NORTHWEST. THIRD ONE IS APPROACHING THE PACIFIC NORTHWEST. MAIN
FRONTAL BOUNDARY STILL LIES TO THE SOUTH OF THE FORECAST AREA WITH
THE DEEPER LOW LEVEL MOISTURE TRAPPED TO THE SOUTH OF IT.

AT JET LEVEL...MODELS INITIALIZED FINE. AT MID LEVELS...SATELLITE
SHOW THE MODELS NOT TOO BAD. UKMET/GFS WERE CATCHING THE SHORTWAVE
DETAILS IN THE PACIFIC THE BEST WITH THE GFS DOING SLIGHTLY BETTER ON
THE LOW POSITIONS. HOWEVER...THE UKMET AND RUC LOOK TO BE CAPTURING
THE SECOND AND THIRD SHORTWAVE POSITIONS THE BEST. ALSO THE RUC AND
UKMET ARE CATCHING THE SOUTHEAST WYOMING SHORTWAVE THE BEST.
HOWEVER...THE UKMET DAMPENS THIS SHORTWAVE OUT. MODELS HAVE TROUBLE
WITH TROUGH POSITIONS AND STRENGTH OVER THE WESTERN AND CENTRAL
PORTIONS OF THE COUNTRY. THE MODELS WERE TOO FAR EAST/NOT DEEP ENOUGH
WITH SYSTEMS. THIS WAS ESPECIALLY TRUE OF THE EXITING SYSTEM TO OUR
EAST THAT BROUGHT THE OVERNIGHT CONVECTION. THE GFS WAS THE CLOSEST
BUT IT WAS TOO FAR EAST. THE PROBLEMS WERE NOT AS BAD OUT WEST. WITH
THE EXCEPTION OF THE EXITING SYSTEM...THE UKMET WAS DOING SLIGHTLY
BETTER ON THE HEIGHT FIELD OVER THE GFS.

AT LOW LEVELS...MODELS DOING VERY WELL WITH CURRENT SITUATION. NAM
IS DOING THE BEST RIGHT NOW ON THE WIND FIELD. GFS INITIALIZED A
LITTLE BETTER THAN THE REST ON TEMPERATURES. WILL GO WITH A BLEND OF
THE GFS/UKMET/NAM FOR THIS FORECAST.

TONIGHT...INTERESTING COMPLICATED FORECAST FOR TONIGHT. THUNDERSTORMS
HAVE BEEN ONGOING/APPROACHING FROM THE NORTHWEST ALL DAY. THIS IS IN
RESPONSE TO THE WYOMING SHORTWAVE. ALSO...EITHER ANOTHER FRONTAL
SURGE ASSOCIATED WITH THE SHORTWAVE...OUTFLOW BOUNDARY...OR BOTH
PROVIDING SURFACE CONVERGENCE HELP TO THE INCOMING SHORTWAVE. RIGHT
REAR QUADRANT OF THE JET IS OVER THE SOUTHERN AREAS EARLY ON. THE
PRECIPITATION FORECAST WILL HINGE ON THE TRENDS OF THIS CONVECTION.
HOWEVER...BASED ON CURRENT TRENDS IT LOOKS LIKE CONVECTION MAY HAVE
PUSHED THROUGH MOST OF THE WESTERN PORTION OF THE FORECAST AREA WITH
THE EASTERN PORTION RECEIVING THE BRUNT OF THIS. PRECIPITATION SHOULD
SHUT OFF QUICKLY WITH DRY AIR AT MID LEVELS COMING IN BEHIND THIS
FEATURE.

FRIDAY/FRIDAY NIGHT...SHOULD BE SEEING SHORTWAVE RIDGING AND
SUBSIDENCE THROUGH MOST OF THE DAY BEFORE NEXT SHORTWAVE TROUGH
MOVES IN FROM THE NORTHWEST. NAM/NGM SHOW A RIGHT REAR QUADRANT OF
THE JET MOVING ACROSS DURING THE AFTERNOON. THE GFS/UKMET DO NOT
SHOW THIS.  WINDS SHIFT AROUND TO THE SOUTH EARLY...AND RAPIDLY
INCREASE THE LOW LEVEL MOISTURE...ESPECIALLY OVER THE WESTERN HALF OF
THE FORECAST AREA. WILL KEEP SLIGHT CHANCE TO CHANCE OVER THE AREA...
ESPECIALLY AT NIGHT. WILL TEND TO GO NEAR TO SLIGHTLY BELOW
GUIDANCE.

SATURDAY/SATURDAY NIGHT...ANOTHER SHORTWAVE MOVES INTO THE AREA.
THIS ONE HAS A SURFACE BOUNDARY ASSOCIATED WITH IT. AFTER IGNORING
IT YESTERDAY...MODEL GUIDANCE APPEARS TO HAVE CAUGHT ON TO THIS
FEATURE...AND THE POPS HAVE INCREASED. ALSO SURFACE BOUNDARY PUSHES
INTO THE NORTHERN AND WESTERN PORTIONS OF THE FORECAST AREA IN THE
AFTERNOON...AND THROUGH THE AREA DURING THE EVENING. WILL START THE
CHANCE IN THE AFTERNOON...HIGHEST IN THE WEST...AND THEN PUSH IT
ACROSS THE AREA. WILL GO WARMEST IN THE SOUTH AHEAD OF THE BOUNDARY.

SUNDAY/SUNDAY NIGHT...AT THE SURFACE...POST FRONTAL UPSLOPE WILL
KEEP MOISTURE IN PLACE WITH ANOTHER SHORTWAVE COMING THROUGH IN
NORTHWEST FLOW ALOFT. WILL AGAIN GO CHANCE STARTING IN THE LATE
AFTERNOON. WILL TEND TO GO NEAR TO SLIGHTLY BELOW GUIDANCE DUE TO
WET GROUND AND UPSLOPE WINDS.

FOR MONDAY THROUGH THURSDAY...MODELS HAVE CONTINUED THEIR GOOD
PERFORMANCE AND PREVIOUS TRENDS. IN GENERAL...MODELS ARE MAKING THE
WESTERN RIDGE MORE AMPLIFIED AND FURTHER WEST WITH THE RIDGE AXIS.
THIS LOOKS REASONABLE CONSIDERING HOW THE FLOW IS TRANSITIONING
RIGHT NOW. OVERALL THE GFS DOES THE BEST WITH THIS SCENARIO WITH THE
ECMWF NOT TOO FAR BEHIND UNTIL THE END OF THE PERIOD. THE ECMWF
BREAKS DOWN THE RIDGE TOO FAST AND IS TOO PROGRESSIVE AT THIS TIME.
ALMOST STRAIGHT NORTH FLOW ALOFT THEN WE START TRANSITIONING INTO A
MORE NORTHWEST FLOW ALOFT IN THE TUESDAY TO THURSDAY TIME FRAME.
AGAIN HARD TO SAY WHAT WILL HAPPEN IN THIS PATTER WITH THE DETAILS
ALMOST IMPOSSIBLE TO PREDICT ON THE PRECIPITATION. WILL KEEP SOME
KIND OF SLIGHT CHANCE OR LOW CHANCE POPS IN FOR MOST OF THE PERIOD.
TEMPERATURES IN THIS FLOW ALOFT WILL NOT WARM TOO MUCH...AND GUIDANCE
LOOKS REASONABLE AND WILL PROBABLY GO CLOSE TO.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
NE...NONE.
CO...NONE.
&&

BULLER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GOODLAND KS
1253 PM MDT THU JUN 22 2006

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-231630-
YUMA-KIT CARSON-CHEYENNE CO-CHEYENNE KS-RAWLINS-DECATUR-NORTON-
SHERMAN-THOMAS-SHERIDAN-GRAHAM-WALLACE-LOGAN-GOVE-GREELEY-WICHITA-
DUNDY-HITCHCOCK-RED WILLOW-
0153 PM CDT THU JUN 22 2006 /1253 PM MDT THU JUN 22 2006/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWEST
NEBRASKA...NORTHWEST KANSAS AND EAST CENTRAL COLORADO.

.DAY ONE...TODAY AND TONIGHT

MOIST UPSLOPE CONDITIONS WILL PERSIST AS THE NEXT WAVE
IN A SERIES OF UPPER LEVEL DISTURBANCES MOVES EAST OF THE ROCKIES.
THUNDERSTORM DEVELOPMENT IS EXPECTED THIS AFTERNOON AND EVENING
ACROSS THE TRI-STATE AREA AS THIS DISTURBANCE PUSHES SOUTHEASTWARD. SOME STORMS
COULD BECOME SEVERE WITH ATMOSPHERIC SHEAR PROFILES FAVORING
SUPERCELL DEVELOPMENT. THE MAIN THREATS WITH THESE STORMS WILL BE
LARGE HAIL AND DAMAGING WINDS...HOWEVER THERE WILL BE A SLIGHT
CHANCE FOR ISOLATED TORNADOES OVER EASTERN COLORADO AND PORTIONS OF
EXTREME WESTERN KANSAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A SERIES OF DISTURBANCES WILL CONTINUE TO TRAIN ACROSS THE TRI-
STATE REGION IN THE WEST TO NORTHWEST FLOW ALOFT WITH LOW LEVEL
UPSLOPE FLOW PUMPING MOISTURE INTO THE REGION. THE POSSIBILITY OF
AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE EACH AFTERNOON
AND EVENING THROUGH THE END OF THE WORK WEEK AND INTO THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

LOCKHART/BTS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
223 PM MDT THU JUN 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0220 PM     HAIL             4 N WINONA              39.12N 101.25W
06/22/2006  E1.00 INCH       LOGAN              KS   TRAINED SPOTTER

&&

SHOEMAKE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
250 PM MDT THU JUN 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     HAIL             16 N STRATTON           39.53N 102.60W
06/22/2006  E1.00 INCH       KIT CARSON         CO   PUBLIC

            GROUND COVERED

&&

SHOEMAKE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
253 PM MDT THU JUN 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     TSTM WND DMG     14 S KANORADO           39.13N 102.04W
06/22/2006                   SHERMAN            KS   TRAINED SPOTTER

            SNAPPED 6 INCH DIAMETER TREE TRUNK ESTIMATED AT 60MPH

&&

SHOEMAKE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
316 PM MDT THU JUN 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0312 PM     HAIL             14 NW SHARON SPRINGS    39.04N 101.94W
06/22/2006  E1.00 INCH       WALLACE            KS   PUBLIC

&&

SHOEMAKE

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
323 PM MDT THU JUN 22 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     HAIL             8 N MONUMENT            39.22N 101.00W
06/22/2006  E0.75 INCH       THOMAS             KS   TRAINED SPOTTER

&&

SHOEMAKE

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