Area Forecast Discussion Issued by NWS Dodge City, KS
000
FXUS63 KDDC 140535
AFDDDC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DODGE CITY KS
1235 AM CDT FRI JUN 14 2013
...UPDATED AVIATION SECTION...
.SHORT TERM...(THIS EVENING THROUGH FRIDAY)
ISSUED AT 201 PM CDT THU JUN 13 2013
FOR THIS EVENING, AN UPPER LEVEL TROUGH WILL MOVE ACROSS EASTERN
COLORADO AND NORTHWEST KANSAS. SOUTHEAST UPSLOPE FLOW AND SURFACE
THAT-E ADVECTION WAS OCCURRING NORTH OF A WARM FRONT THAT WAS
STILL LOCATED ACROSS SOUTHWEST KANSAS AS OF 18Z. MUCAPES FROM SPC
ACROSS EAST CENTRAL COLORADO AND WEST CENTRAL KANSAS WERE AROUND
2000 J/KG BUT THERE WAS ALSO SOME INHIBITION TO OVERCOME AS WELL.
AT THIS TIME GIVEN SEVERAL MORE HOURS OF HEATING THE CHANCE FOR A
FEW THUNDERSTORMS ACROSS EASTERN COLORADO LATE TODAY IS NOT OUT OF
THE QUESTION. A FEW OF THE NON HYDROSTATIC MODELS EVEN SUGGESTED
THAT THERE WILL BE A SLIGHT CHANCE FOR SOME CONVECTION NEAR OR
NORTHWEST OF THE GARDEN CITY AREA EARLY THIS EVENING AS AN
OUTFLOW FROM THE INITIAL COLORADO STORMS CROSSES WEST CENTRAL
KANSAS. AT THIS TIME CONFIDENCE IS NOT HIGH ON HOW OR IF THESE
THUNDERSTORMS IN COLORADO WILL DEVELOP. WILL CONTINUE TO MONITOR
RADAR AND SATELLITE TRENDS AND ADJUST FORECAST AS NEEDED. AT THIS
TIME WILL KEEP SMALL PRECIPITATION CHANCES ACROSS WEST CENTRAL
KANSAS. MAIN HAZARD THIS EVENING WILL BE GUSTY WINDS OF 50 TO 55
MPH AND SMALL HAIL.
ON FRIDAY THE WARM FRONT WILL MOVE INTO SOUTH CENTRAL NEBRASKA
AND EASTERN KANSAS AS THE UPPER LEVEL RIDGE AXIS SLIDES EAST. A
COLD FRONT WILL BE LOCATED ACROSS NORTHWEST KANSAS BY LATE DAY AS
AN UPPER LEVEL DISTURBANCE MOVES FROM EASTERN COLORADO TOWARDS
NORTHWEST KANSAS. AT THIS TIME THE BETTER OPPORTUNITY FOR LATE DAY
CONVECTION APPEARS TO BE NORTH OF INTERSTATE 70 IN NORTHWEST
KANSAS SO WILL TRIM PRECIPITATION CHANCES ACROSS WEST CENTRAL AND
NORTH CENTRAL KANSAS THROUGH 7 PM. THE 850MB TEMPERATURES FROM THE
NAM AND GFS AT 00Z SATURDAY ARE FORECAST TO BE GREATER THAN 30C
JUST AHEAD OF THE COLD FRONT WHILE 700MB TEMPERATURES VARY FROM
+14 TO +16C. GIVEN THESE 850-700MB TEMPERATURES LATE FRIDAY THE
AFTERNOON HIGHS REBOUNDING BACK INTO THE 100 TO NEAR 103 DEGREE
RANGE STILL APPEARS REASONABLE. THESE WARM TEMPERATURES ALONG
WITH DEWPOINTS IN THE THE 40S WILL RESULT IN THE RELATIVE
HUMIDITIES BOTTOMING OUT IN THE 15 TO 20 PERCENT RANGE. AT THIS
TIME HOWEVER AM UNSURE IF THE RELATIVE HUMIDITIES WILL REACH RED
FLAG WARNING CRITERIA ON FRIDAY AFTERNOON GIVEN THE CURRENT
DEWPOINTS EXPECTED. AS A RESULT WILL NOT UPGRADE THE FIRE WATCH
THAT IS CURRENTLY ISSUED FOR MOST OF WESTERN KANSAS.
.LONG TERM...(FRIDAY NIGHT THROUGH THURSDAY)
ISSUED AT 345 PM CDT THU JUN 13 2013
FRIDAY NIGHT/SATURDAY:
AS MENTIONED IN THE SHORT TERM PERIOD, HAVE DOUBTS ABOUT CONVECTION
AFTER 00Z SATURDAY AND HAVE GONE WITH SILENT PRECIPITATION PROBABILITIES
UP NORTH. THE ATMOSPHERE LOOKS PRETTY CAPPED AND INSTABILITY LOOKS TO
DIMINISH AS DRIER AIR ADVECTS IN ACROSS THE REGION. OTHERWISE, MINIMUMS
HEADING INTO SATURDAY MORNING WILL BE IN THE 60S/70S DEG F.
ON SATURDAY, A MINOR AND DE-AMPLIFYING WAVE MOVES ACROSS THE REGION
FROM THE SOUTH. IN ADDITION, A SHORTWAVE TROF MOVING ACROSS THE NORTHERN
PRAIRIES WILL USHER IN THE PASSAGE OF SFC FRONT BY EVENING ACROSS NORTHERN
KANSAS. THESE FEATURES COULD LEAD TO CONVECTION ACROSS SW KANSAS. WITH
850 HPA WARM PLUME LOCATED SOUTHWEST OF THE REGION, IT APPEARS THAT
SLIGHTLY MORE SEASONAL MAXIMUM TEMPERATURES ARE IN STORE FOR SW KANSAS
WITH HIGHS IN THE LOW 90S DEG F (VERSUS 100S DEG F). LINGERING CLOUD
COVER FROM CONVECTION SHOULD ALSO LIMIT INSOLATION AND RESULTANT IMPACTS
TO HIGHS. OVERNIGHT LOWS EXPECTED MAINLY IN THE 60S DEG F AS A SLIGHTLY
COOLER AIRMASS MOVES IN.
SUNDAY:
CONVECTION WILL STILL BE POSSIBLE ACROSS THE REGION SUNDAY. MAINLY FOLLOWED
THE ECMWF FOR GUIDANCE AS THE GFS APPEARS TOO WET OF A SOLUTION AT THIS
TIME (VIA CONVECTIVE FEEDBACK NON LINEAR ERRORS). HIGHS EXPECTED
IN THE LOW 90S OR POSSIBLY UPPER 80S DEG F.
MONDAY AND BEYOND:
THE ECMWF SHOWS AN UPSLOPE REGIME ACROSS KANSAS POST FRONTAL MONDAY
AND TUESDAY. THERE WILL BE BOUTS OF THUNDERSTORMS UNDER A NORTHWEST/WEST
FLOW PATTERN ALOFT. 850 HPA TEMPERATURES SUGGEST THAT 80S COULD BE MORE
LIKELY DURING THIS PERIOD. USED A BLEND OF ALLBLEND/ECMWF RAW/ECEMOS
AS GUIDANCE FOR TEMPERATURES. NOT TOTALLY CONFIDENT IN JUST ONE DETERMINISTIC
SOLUTION, BUT THE TREND FOR MORE REASONABLE/SEASONABLE TEMPERATURES
WAS ALSO SUGGESTED BY YESTERDAYS ECMWF SOLUTIONS. BEYOND MIDWEEK, A
LARGE TROF MAY FORM ACROSS THE PACIFIC NORTHWEST. THIS COULD FAVOR THE
EVENTUAL ADVECTION OF A WARM/HOT PLUME ACROSS THE REGION, THIS WOULD
LEAD TO WARMER TEMPERATURES AND REDUCED PROBABILITIES FOR CONVECTION
VIA A CAPPED/WARM ATMOSPHERE.
&&
.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z FRIDAY NIGHT)
ISSUED AT 1233 AM CDT FRI JUN 14 2013
VFR CONDITIONS WILL PREVAIL TODAY THROUGH TONIGHT AS THE
ATMOSPHERE WILL REMAIN FAIRLY DRY. WINDS WILL BE FROM THE SOUTH AT
10 TO 15 KNOTS THROUGH THE EARLY MORNING HOURS SHIFTING TO THE
SOUTH SOUTHWEST IN THE LATE MORNING. WINDS WILL ALSO INCREASE TO
20 TO 25 KNOTS WITH GUSTS AROUND 30 KNOTS IN THE AFTERNOON INTO
THE EARLY EVENING AS THE ATMOSPHERE MIXES AND THE PRESSURE
GRADIENT TIGHTENS.
&&
.FIRE WEATHER...
ISSUED AT 201 PM CDT THU JUN 13 2013
TEMPERATURES ARE EXPECTED TO CLIMB INTO THE 100 TO 103 DEGREE
RANGE ON FRIDAY AS GUSTY SOUTH/SOUTHWEST WINDS DEVELOP. THIS
COMBINED WITH AFTERNOON DEWPOINTS IN THE 40S WILL RESULT IN
RELATIVE HUMIDITY VALUES FALLING INTO THE TEENS FOR SEVERAL HOURS
FRIDAY AFTERNOON ACROSS WESTERN KANSAS. AT THIS TIME IT APPEARS
THE LOWER RELATIVE HUMIDITIES FRIDAY AFTERNOON WILL BE LOCATED IN
WEST CENTRAL KANSAS. THIS WILL RESULT IN VERY HIGH TO NEAR
CRITICAL FIRE WEATHER CONDITIONS AND A FIRE WEATHER WATCH IS IN
EFFECT. OUTDOOR BURNING IS DISCOURAGED.
&&
.PRELIMINARY POINT TEMPS/POPS...
DDC 71 90 69 92 / 10 40 40 40
GCK 70 92 68 92 / 10 30 40 40
EHA 68 93 68 92 / 0 30 30 30
LBL 70 91 69 93 / 10 30 30 30
HYS 71 92 68 93 / 10 40 40 50
P28 73 91 71 92 / 10 40 40 50
&&
.DDC WATCHES/WARNINGS/ADVISORIES...
FIRE WEATHER WATCH FROM NOON CDT /11 AM MDT/ TODAY THROUGH THIS
EVENING FOR KSZ030-043>045-061>064-074>077.
&&
$$
SYNOPSIS...BURGERT
SHORT TERM...BURGERT
LONG TERM...SUGDEN
AVIATION...HOVORKA_42
FIRE WEATHER...BURGERT