907
FXUS61 KRLX 020633
AFDRLX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON WV
233 AM EDT FRI MAY 2 2025
SYNOPSIS
SHOWERS OVERNIGHT, WITH STRONG THUNDERSTORMS POSSIBLE AGAIN ON
FRIDAY EVENING. CHANCES OF SHOWERS AND THUNDERSTORMS AT TIMES
THROUGH THE WEEKEND AND INTO THE NEXT WORK WEEK.
NEAR TERM /THROUGH TONIGHT/
AS OF 830 PM THURSDAY...
A REMNANT LINE OF SHOWERS AND ISOLATED THUNDERSTORMS CONTINUES
TO TRACK ACROSS THE CWA, WITH THE STRONGEST ACTIVITY BEING
ACROSS NORTHERN WV. THIS WILL CONTINUE TO SHIFT EAST OVER THE
NEXT HOUR OR TWO, WITH GUSTY WINDS OF 35 TO 45 MPH POSSIBLE
ACROSS NORTHERN WV AS IT MOVES THROUGH. FURTHER SOUTH, LOCAL GUSTS
UP TO 40 MPH COULD OCCUR. BRIEF, LOCALLY HEAVY DOWNPOURS ARE
POSSIBLE AREA-WIDE AS THIS ACTIVITY MOVES THROUGH, BUT ANY HYDRO
ISSUES ARE NOT EXPECTED GOING FORWARD. ANY SEVERE THREAT HAS
ALSO DIMINISHED. THE CHANCE FOR SHOWERS WILL LINGER LONGEST
IN/NEAR THE MOUNTAINS OVERNIGHT, WITH MAINLY DRY WEATHER
ELSEWHERE (OUTSIDE OF ISOLATED SHOWERS).
AS OF 500 PM THURSDAY...
ISOLATED SHOWERS AND THUNDERSTORMS EXIST ACROSS PORTIONS OF THE
FORECAST AREA AT PRESENT, WITH STORMS BEING OF THE SUB-SEVERE
VARIETY CURRENTLY. DO EXPECT AN UPTICK IN ACTIVITY OVER THE NEXT
FEW HOURS THROUGH SUNSET AS BETTER UPPER-LEVEL DYNAMICS MOVE IN
FROM THE WEST, WITH APPROACHING THUNDERSTORMS ENTERING A REGION
THAT HAS EXPERIENCED SOME CLEARING OVER THE LAST FEW HOURS. THE
MAIN THREAT CONTINUES TO BE DAMAGING WIND GUSTS, ALTHOUGH
MARGINALLY SEVERE HAIL REMAINS POSSIBLE IN A FEW INSTANCES. THE
AREA WITH THE GREATEST POTENTIAL FOR SEVERE THUNDERSTORMS
CONTINUES TO BE ACROSS NE KY, SE OH, AND CENTRAL/NORTHERN WV.
HAVE MADE MINOR TWEAKS TO THE FORECAST TO ENCAPSULATE STRONGER
NON-THUNDERSTORM WIND GUSTS IN ADVANCE OF THE ACTIVITY OUT TO
THE WEST ASSOCIATED WITH DIURNAL MIXING, WITH GUSTS OF 25-35 MPH
CURRENTLY ACROSS MUCH OF THE FORECAST AREA. ADDITIONALLY,
ADJUSTED TEMPERATURES TO REPRESENT THE ANTICIPATED COLD POOL
ASSOCIATED WITH THE SHOWERS/STORMS JUST NOW MOVING INTO THE FAR
NORTHWEST PORTION OF THE FORECAST AREA. THE REST OF THE FORECAST
REMAINS ON TRACK.
AS OF 150 PM THURSDAY...
AT THIS HOUR THE REGION RESIDES IN AN EXPANSIVE WARM SECTOR. DIURNAL
UPSLOPE AGAINST THE HIGHER TERRAIN HAS ALREADY WORKED THROUGH A
MODEST CAP, WITH SOME ADDITIONAL TOWERS STARTING TO GO UP ACROSS THE
LOWER ELEVATIONS INDICATING A QUICKLY ERODING CAP ELSEWHERE.
ELEVATED SHOWERS PRESENTLY WORKING THROUGH THE METRO VALLEY HAVE
KNOCKED DOWN SURFACE TEMPERATURES 5-10 DEGREES AS THEY CROSSED OVER
AREA UPSTREAM, ALTHOUGH OUR WESTERN LOCATIONS SHOULD HAVE PLENTY OF
OPPORTUNITY TO DESTABILIZE PRIOR TO ADDITIONAL STORMS MOVING
INTO THE REGION. THE MAIN SHOW SHOULD BE ALONG AND PERHAPS AHEAD
OF (DEPENDING ON TRENDS IN CAP STRENGTH) A LINE OF CONFLUENCE
PRESENTLY WORKING THROUGH CENTRAL OHIO WHICH HAS ALREADY SPAWNED
A BROKEN LINE OF CONVECTION.
OVERALL, THE STRONGEST KINEMATICS LOOK TO REMAIN OVER OHIO BEFORE
MOVING UP INTO PENNSYLVANIA TONIGHT. MESOSCALE MODELS CONTINUE
TO DEPICT 1000-1500J/KG OF MLCAPE IN ADVANCE OF THIS LINE AMIDST
DEEP LAYER SHEAR STRENGTHENING TO 35-45KTS, ESPECIALLY THIS
EVENING AS STRONGER H850 FLOW MOVES INTO THE MIDDLE OHIO VALLEY.
THE MAIN THREAT WITH THIS ACTIVITY SHOULD BE DAMAGING WIND GUSTS
WITH SOMEWHAT LINEAR NATURE, ALONG WITH PERHAPS SOME MARGINALLY
SEVERE HAIL IN ANY STRONGER DISCRETE CONVECTION. LARGELY THINK ANY
DISCRETE CONVECTION WILL BE OUT FAR ENOUGH AHEAD OF THE
STRENGTHENING LOW LEVEL WIND FIELD TO LIMIT THE RISK FOR
TORNADOES, BUT COULDN'T RULE OUT SOMETHING FORMING UP IN THE
LINE THIS EVENING AS FLOW STARTS TO INCREASE.
A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED THROUGH 7 PM FOR MOST OF
NORTHEAST KENTUCKY AND SOUTHEAST OHIO.
SHOULD BEGIN TO SEE STORM INTENSITY WANE BY 9-10PM AS INSTABILITY
DECREASES. MODEST WARM ADVECTION DURING THE LATE OVERNIGHT INTO
FRIDAY MORNING MAY YIELD PERSISTENCE OF EXISTING UPDRAFTS, OR
NEW ELEVATED ACTIVITY, ESPECIALLY HEADING INTO FRIDAY MORNING.
DURING THE DAY FRIDAY, WILL LIKELY SEE SOME ADDITIONAL DIURNAL
SURFACE BASED CONVECTION BLOSSOMING HEADING INTO THE AFTERNOON,
ESPECIALLY ACROSS SE OH AND N WV, BUT OTHERWISE THE DAYLIGHT HOURS
MAY REMAIN MAINLY PRECIPITATION FREE FOR MOST WITH BETTER CHANCES
ARRIVING FRIDAY NIGHT.
SHORT TERM /SATURDAY THROUGH MONDAY NIGHT/
AS OF 230 AM FRIDAY...
A FRONTAL BOUNDARY WILL REMAIN IN OUR VICINITY OVER THE WEEKEND
AS AN UPPER LEVEL LOW TO OUR WEST BECOMES A CUT OFF LOW. THIS
WILL ALLOW FOR NUMEROUS SHOWERS AND THUNDERSTORMS. WITH MUCH OF
THE AREA ALREADY WET FROM PREVIOUS SHOWERS AND THUNDERSTORMS,
THERE IS AN ELEVATED CONCERN FOR FLASH FLOODING.
THE UPPER LEVEL LOW WILL REMAIN NEARLY STATIONARY THROUGH
MONDAY, BEFORE STARTING TO SHIFT EITHER NORTHWARD OR EASTWARD
MONDAY NIGHT. MODELS DO VARY ON HOW THIS LOW WILL SHIFT BASED ON
HOW A LOW OVER THE SOUTHWESTERN UNITED STATES BEGINS TO SHIFT.
LONG TERM /TUESDAY THROUGH THURSDAY/
AS OF 230 AM FRIDAY...
AN UPPER LOW PRESSURE SYSTEM WILL SHIFT AWAY FROM THE AREA ON
TUESDAY AND WEDNESDAY, ALTHOUGH MODELS DIFFER ON EXACTLY HOW
THAT WILL HAPPEN. SOME MODELS SHOW ENOUGH MOISTURE LEFT BEHIND
FOR SOME MAINLY DIURNAL SHOWERS AND THUNDERSTORMS, BUT LESSER
CHANCES THAN OVER THE WEEKEND.
ANOTHER UPPER LEVEL LOW OVER THE SOUTHWESTERN US MAY SHIFT INTO
THE CENTRAL US TOWARD THE END OF THE WEEK, ALTHOUGH MODELS ARE
STRUGGLING WITH THE HANDLING OF THIS SYSTEM. THAT LEADS TO
UNCERTAINTY AS TO WHEN THE MORE ROBUST MOISTURE WILL RETURN TO
THE AREA, AND HENCE A LOWER CONFIDENCE IN THE FORECAST FOR THE
END OF THE WORK WEEK.
AVIATION /06Z FRIDAY THROUGH TUESDAY/
AS OF 145 AM FRIDAY...
STILL SEEING SOME SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
MOVE UP FROM THE SOUTHWEST. DID KEEP VCTS AND SHRA AT MOST SITES
FOR A FEW MORE HOURS TO ACCOUNT FOR THIS ACTIVITY, BUT NOT
ANTICIPATING LIGHTNING/THUNDER TO HANG ON FOR MUCH LONGER.
MVFR AND SOME IFR RESTRICTIONS EXPECTED ACROSS A FEW AREAS
TONIGHT. CEILING RESTRICTIONS EXPECTED ACROSS THE NORTHERN
LOWLANDS AND MOUNTAINS, ALSO EXPECTING SOME PATCHY VALLEY FOG
DEVELOPMENT WHICH WOULD MOST LIKELY IMPACT CRW AND EKN.
CONFIDENCE IS NOT HIGH IN IFR OR LOWER CURRENTLY AS CLOUD COVER
AND 925MB-850MB WINDS ARE NOT FAVORABLE, BUT OBSERVATIONS AND
LOW LEVEL MOISTURE ARE SUGGESTING THAT SOME FOG ALONG THE RIVERS
IS POSSIBLE, ESPECIALLY WITH BREAKS IN THE CLOUD COVER.
VFR RESUMES UNDER BROKEN AND SCATTERED CLOUD COVER BY MID TO
LATE MORNING, JUST ABOUT THE TIME THAT SW'RLY WINDS PICK UP TO A
STEADY BREEZE, WHICH WILL PREVAIL INTO THE AFTERNOON. A FEW
SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE EARLY IN THE
AFTERNOON, BUT A LINE OF STORMS IS EXPECTED TO MOVE IN FROM THE
WEST AGAIN LATER THIS AFTERNOON, AFTER ~20Z OR SO. A FEW STORMS
WILL BE STRONG OR SEVERE WITH DAMAGING WIND GUSTS AND HAIL UP TO
1.00" TO 1.25". MVFR/IFR RESTRICTIONS ARE LIKELY IN AND AROUND
ANY THUNDERSTORMS.
FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 06Z SATURDAY...
FORECAST CONFIDENCE: MEDIUM FOR FOG, OTHERWISE HIGH.
ALTERNATE SCENARIOS: FOG MAY NOT MANIFEST AT CRW AND EKN OR
CONVERSELY, FOG ENDS UP BEING MORE DENSE AND WIDESPREAD THAN
FORECASTED. TIMING, LOCATION AND INTENSITY OF SHOWERS AND
THUNDERSTORMS CLOUD VARY.
EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS CONSISTENCY
OF WFO FORECAST TO AVAILABLE MODEL INFORMATION:
H = HIGH: TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.
M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS.
L = LOW: TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.
DATE FRI 05/02/25
UTC 1HRLY 06 07 08 09 10 11 12 13 14 15 16 17
EDT 1HRLY 02 03 04 05 06 07 08 09 10 11 12 13
CRW CONSISTENCY L L L M M H H H H H H H
HTS CONSISTENCY H H H H H H H H H H H H
BKW CONSISTENCY H H H H H H H H H H H H
EKN CONSISTENCY H H M H M H M H H H H H
PKB CONSISTENCY H H H H M M H M H H H H
CKB CONSISTENCY H H H H M H H M H H H H
AFTER 06Z SATURDAY...
IFR CONDITIONS ARE POSSIBLE WITH SHOWERS AND STORMS AT TIMES
THROUGH MONDAY.
RLX WATCHES/WARNINGS/ADVISORIES
WV...NONE.
OH...NONE.
KY...NONE.
VA...NONE.
SYNOPSIS...RPY/JP
NEAR TERM...JP/GW
SHORT TERM...RPY
LONG TERM...RPY
AVIATION...LTC
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