National Weather Service National Headquarters

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS63 KGLD 162012
AFDGLD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
212 PM MDT SUN JUN 16 2013

.SHORT TERM...(THIS EVENING THROUGH MONDAY)
ISSUED AT 151 PM MDT SUN JUN 16 2013

A RIDGE WILL REMAIN OVER THE ROCKIES THROUGH MONDAY WITH
NORTHWESTERLY FLOW OVER THE CENTRAL PLAINS. A SURFACE TROUGH WILL BE
OVER EASTERN COLORADO TONIGHT AND MONDAY.

CURRENT RADAR AND VISIBLE SATELLITE SHOWING STORMS FIRING OVER
EASTERN COLORADO. THESE STORMS WILL MOVE INTO CAPE VALUES REACHING
2500 J/KG AND 30KTS SHEAR. EXPECT SEVERE THUNDERSTORMS WITH LARGE
HAIL AND DAMAGING WIND DUE TO HIGH BASED STORMS. STEERING WIND WILL
MOVE STORMS EAST INTO NORTHWEST KANSAS AND SOUTHWEST NEBRASKA THIS
EVENING. PLAN TO GO WITH LIKELY POPS SINCE STORMS ARE ALREADY IN
PROGRESS MOVING EAST. FOR MONDAY STORMS WILL FIRE AGAIN OVER EASTERN
COLORADO AS THE NEXT IMPULSE MOVES THROUGH. STEERING WIND WILL TAKE
THEM EAST SO HAVE GONE WITH CHANCE POPS IN EASTERN COLORADO MONDAY
AFTERNOON WITH SLIGHT CHANCE TO NIL POPS ACROSS NORTHWEST KANSAS.

MAX TEMPERATURES WILL RISE TO THE MID 80S MONDAY WITH LOWER 80S IN
THE NORTHWEST FA NEAR INCREASING AFTERNOON CLOUDS. MIN TEMPERATURES
TONIGHT WILL COOL TO THE UPPER 50S IN EASTERN COLORADO AND THE LOWER
60S ELSEWHERE.

STRATUS WAS VERY MARGINAL AT BEST IN THE NORTHEAST FA EVEN THOUGH
NAM BOUNDARY LAYER RH ABOVE 90 PERCENT WAS WIDESPREAD. TREND IS FOR
A SMALLER AREA OF HIGH RH TONIGHT SO WILL LEAVE OUT ANY CLOUDS AND
PATCHY FOG.

.LONG TERM...(MONDAY NIGHT THROUGH SUNDAY)
ISSUED AT 212 PM MDT SUN JUN 16 2013

MONDAY NIGHT...THUNDERSTORM ACTIVITY SHOULD INCREASE IN COVERAGE AS
STATIONARY/WARM FRONT SLOWLY SHIFTS TO THE NORTH MONDAY EVENING.
NAM/GFS SHOWING AREA OF STRONG THETA-E CONVERGENCE AFTER 03Z WITH
GUIDANCE FAVORING NUMEROUS THUNDERSTORMS AS LARGE SCALE FORCING
INCREASES. IN FACT...100 PERCENT OF GEFS ENSEMBLE MEMBERS SHOW AT
LEAST 0.05 QPF OVER OUR ENTIRE CWA BY 06Z. I BUMPED POPS INTO LIKELY
CATEGORY...AND COULD SEE INCREASING THEM FURTHER AS WE GET CLOSER TO
THIS EVENT. I AM CONCERNED ABOUT THE POTENTIAL FOR THUNDERSTORM
TRAINING/BACKWARDS PROPAGATION ALONG FRONT AS IT LIFTS DURING THE
EVENING WITH VERY WEAK 0-6KM FLOW (5-10KT) PARALLEL TO THE FRONT. H3
JET IS ALMOST PERPENDICULAR TO THE FRONT WITH H85 FLOW INBOUND.
SOUNDINGS ARE NEAR SATURATED THROUGH THE LAYER BY 06Z...WITH PWAT
VALUES OVER ONE INCH AND TALL SKINNY CAPE INDICATIVE OF EFFICIENT
RAIN PRODUCING THUNDERSTORMS. IF THIS PLAYS OUT WE COULD SEE AN
INCREASED LIKELIHOOD OF FLASH FLOODING. TIMING/LOCATION DIFFERENCES
WITH FRONTAL POSITION COMPLICATE THINGS...AND CONFIDENCE IS NOT
THERE TO GO WITH A WATCH. THIS WILL NEED TO BE MONITORED.

TUESDAY-WEDNESDAY NIGHT...STATIONARY FRONT LINGERS WITHIN THE
VICINITY OF THE CWA THROUGH THESE PERIODS...AND WEAK SHORTWAVES/VORT
MAXIMA WILL CONTINUE TO MOVE ACROSS THE REGION. THIS MEANS LITTLE
WILL CHANGE WITH AN ACTIVE PATTERN CONTINUING. I KEPT THUNDERSTORM
CHANCES ACROSS OUR CWA...WITH BEST COVERAGE IN THE
AFTERNOON/OVERNIGHT PERIODS WHEN BEST FORCING IS ADVERTISED.

THURSDAY-FRIDAY NIGHT...DRY CONDITIONS SHOULD RETURN THURSDAY AS H5
RIDGE BUILDS OVER SOUTHERN PLAINS AND SW FLOW BUILDS DEVELOPS OVER
OUR CWA. ABOVE NORMAL HIGHS SHOULD ALSO RETURN TO THE REGION...WITH
HIGHS IN THE MID/UPPER 90S. MODELS INDICATE DRY LINE SETTING UP OVER
OUR CWA WITH 50/LOW 60S TD VALUES ACROSS OUR EASTERN CWA FRI. MODEL
SOUNDINGS ARE VERY DRY HOWEVER...SO CONFIDENCE IS NOT VERY HIGH IN
THUNDERSTORM DEVELOPMENT ALONG THIS FEATURE. I KEPT SLIGHT CHANCE
POPS IN THE FAR NORTH FRI/FRI NIGHT WHERE MODEL CONSENSUS CONTINUES
TO SHOW LIGHT QPF.

SATURDAY-SUNDAY...LITTLE CHANGES REGARDING OVERALL PATTERN WITH SW
FLOW ALOFT AND DRY LINE IN PLACE. THERE DOES APPEAR TO BE BETTER
FORCING WITH A FEW SHORTWAVE TROUGHS PASSING THROUGH THE REGION AND
A COLD FRONT MOVING INTO SW NEBRASKA SAT NIGHT/SUNDAY. I KEPT
THUNDERSTORM MENTION IN THE AFTERNOON/EVENING WITH LITTLE SUPPORT FOR
OVERNIGHT/MORNING ACTIVITY. THIS ALSO FAVORS OUR NORMAL
CLIMATOLOGICAL PATTERN. DESPITE COLD FRONT WE SHOULD STILL BE ABOVE
NORMAL SUNDAY WITH HIGHS IN THE UPPER 80S/LOW 90S.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON)
ISSUED AT 1135 AM MDT SUN JUN 16 2013

VFR CONDITIONS WILL CONTINUE THIS AFTERNOON AND TONIGHT AT KGLD
AND KMCK. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING AS
AN INCOMING DISTURBANCE INITIATES STORMS ON A FRONT NEAR KGLD.
THESE STORMS WILL MOVE EAST AND EVENTUALLY REACH KMCK. SOME MVFR
IS POSSIBLE NEAR THUNDERSTORMS. STORMS SHOULD MOVE OUT BY 03 OR
04Z WITH CLEARING SKIES AND LIGHT WIND.


&&

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

$$

SHORT TERM...FS
LONG TERM...DR
AVIATION...FS