179  
FXUS61 KRNK 090600  
AFDRNK  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BLACKSBURG VA  
200 AM EDT THU OCT 9 2025  
   
SYNOPSIS  
 
HIGH PRESSURE WILL CONTINUE TO SETTLE INTO THE REGION, BRINGING  
COOLER TEMPERATURES, CLEAR SKIES, AND DRY CONDITIONS THROUGH  
SATURDAY. A LOW PRESSURE SYSTEM WILL DEVELOP ALONG THE CAROLINA  
COASTLINE OVER THE WEEKEND, WHICH COULD BRING CLOUDS BACK INTO  
THE REGION, ALONG WITH A FEW RAIN SHOWERS. DRY CONDITIONS RETURN  
FOR EARLY NEXT WEEK.  
 
 
   
NEAR TERM /THROUGH TONIGHT/  
 
AS OF 200 AM EDT THURSDAY...  
 
KEY MESSAGES:  
 
1) PATCHY FROST POSSIBLE IN HIGHER ELEVATIONS THIS MORNING.  
FROST ADVISORY IN EFFECT UNTIL 9 AM.  
 
2) FREEZE WATCH FOR HIGHER ELEVATIONS LATE TONIGHT INTO FRIDAY  
MORNING.  
 
MUCH COOLER AND DRIER CONDITIONS ARE SETTLING IN THIS MORNING,  
WITH TEMPERATURES ACROSS THE AREA IN THE 30S AND 40S. A FROST  
ADVISORY REMAINS IN EFFECT THROUGH 9 AM FOR GREENBRIER AND BATH  
COUNTIES. ELSEWHERE, PATCHY FROST AND FOG IS POSSIBLE. LIGHT NE  
WINDS WILL LIMIT THE EXTENT OF THE FROST.  
 
DENSE HIGH PRESSURE CONTINUES TO WEDGE IN TODAY BEHIND THE COLD  
FRONT. ENE WINDS WILL BE SOMEWHAT GUSTY AT TIMES. EXPECT SUNNY  
SKIES, BUT COOLER TEMPERATURES ARE FORECAST WITH HIGHS IN THE  
LOW TO UPPER 60S.  
 
TONIGHT, EVEN COOLER TEMPERATURES ARE FORECAST, WITH PARTS OF  
THE MOUNTAINS LIKELY DROPPING TO OR JUST BELOW FREEZING.  
GREENBRIER AND BATH COUNTIES ARE UNDER A FREEZE WATCH FOR FRIDAY  
MORNING, WHICH MAY BE UPGRADED TO A WARNING LATER TODAY. ONCE  
AGAIN THE ONLY CONCERN WILL BE A LIGHT ENE WINDS WHICH COULD  
KEEP THE BOUNDARY LAYER MIXED ENOUGH TO NOT REACH FREEZING.  
 
CONFIDENCE IN THE NEAR TERM IS MODERATE.  
 
 
   
SHORT TERM /FRIDAY THROUGH SUNDAY NIGHT/  
 
AS OF 1230 AM EDT THURSDAY...  
 
KEY POINTS:  
 
1. TEMPERATURES TRENDING MILDER EACH DAY.  
2. NORTHERN AND EASTERN PARTS OF THE AREA MAY RECEIVE RAIN OVER  
THE WEEKEND.  
 
A LOOK AT THE 8 OCT 00Z NCEP ENSEMBLE MEAN 500MB GEOPOTENTIAL  
HEIGHTS SHOWS FOR FRIDAY/FRIDAY NIGHT A BROAD RIDGE OVER CENTRAL  
AND SOUTH-CENTRAL CONUS. A SHORTWAVE TROUGH IS EXPECTED TO  
MOVE ACROSS THE GREAT LAKE REGION, A GENERAL AREA OF TROUGHINESS  
IS EXPECTED ALONG THE SE US COAST, AND A DEEP CLOSED LOW IS  
EXPECTED TO BE JUST OFF THE OR COAST. FOR SATURDAY/SATURDAY  
NIGHT, THE SHORTWAVE TROUGH OVER THE GREAT LAKES DEEPENS A BIT  
AND CLOSES OFF AS IT CROSSES INTO SOUTHERN ONTARIO. ITS  
ASSOCIATED TROUGH AXIS IS EXPECTED TO CROSS OUR REGION. A  
GENERAL AREA OF TROUGHINESS CONTINUES OVER THE SE US. THE CLOSED  
LOW OFF THE OR COAST IS EXPECTED TO OPEN INTO A PROGRESSIVE  
LONGWAVE TROUGH AND MOVE OVER WESTERN CONUS. THE RIDGING IN THE  
CENTER OF THE COUNTRY WEAKENS. FOR SUNDAY/SUNDAY NIGHT, THE LOW  
OVER SOUTHERN ONTARIO IS EXPECTED TO STALL AND OPEN AGAIN INTO A  
WAVE OVER PORTIONS OF THE GREAT LAKES AND THE MID-ATLANTIC  
REGIONS. THE WESTERN CONUS LONGWAVE TROUGH IS EXPECTED TO TREND  
BROADER WITH ITS AXIS SHIFTING TO OVER MT/ID/UT/AZ. THE RIDGE  
BECOMES CONFINED TO THE LOWER MISSISSIPPI VALLEY.  
 
AT THE SURFACE, FOR FRIDAY/FRIDAY NIGHT, HIGH PRESSURE WILL BE  
CENTERED OFF THE NEW ENGLAND COAST. ITS ASSOCIATED RIDGE AXIS IS  
EXPECTED TO EXTEND WESTWARD INTO OHIO VALLEY AND SOUTH ALONG  
THE LEE OF THE APPALACHIANS. LOW PRESSURE WILL BE OVER NORTHERN  
MN, WITH A COLD FRONT TRAILING SOUTH INTO THE CENTRAL PLAINS  
STATES. FOR SATURDAY/SATURDAY NIGHT, THE MN LOW IS EXPECTED TO  
HAVE MOVED EAST ACROSS MI AND WEAKENED AS IT ENCOUNTERS THE  
RIDGE OVER NEW ENGLAND. THIS SAME RIDGE IS EXPECTED TO HOLD  
FAST, EXTENDING FROM NEW ENGLAND SOUTHWEST INTO THE LOWER  
MISSISSIPPI VALLEY. LOW PRESSURE IS EXPECTED TO DEVELOP OFF THE  
COAST OF THE CAROLINAS. FOR SUNDAY/SUNDAY NIGHT, THE RIDGE AXIS  
IS EXPECTED TO HOLD FAST. THE LOW OFF THE COAST OF THE CAROLINAS  
IS EXPECTED TO HEAD NORTH AND BE OFF THE VA/NC COAST BY THE  
EARLY EVENING. A SERIES OF LOW PRESSURES AND ASSOCIATED N-S  
ORIENTED FRONTS IS EXPECTED TO DEVELOP OVER CENTRAL CONUS.  
 
A LOOK AT THE 8 OCT 12Z NAEFS ENSEMBLE SITUATIONAL AWARENESS  
DATA SHOWS 850MB TEMPERATURES ON FRIDAY AROUND +7C TO +8C  
ORIENTED NE-SW ACROSS THE REGION. FOR SATURDAY, VALUES TREND  
UPWARD WITH A RANGE AROUND +9C TO +10C, NE-SW. ON SUNDAY, THE  
UPWARD TREND CONTINUES WITH A RANGE OF +10C TO +11C, NE-SW.  
 
THE ABOVE WEATHER PATTERNS OFFERS THE FOLLOWING FORECAST. AS WE  
HEAD INTO THE WEEKEND, OUR REGION WILL BE NEAR THE  
INTERSECTION OF THE INFLUENCE OF A PERSISTENT RIDGE, BUT ALSO  
INCREASING INFLUENCE FOR LOW PRESSURE HEADING NORTH JUST OFF THE  
EAST COAST. THE QUESTION WILL BE THE WESTWARD EXPANSE OF  
ASSOCIATED PRECIPITATION INTO AT LEAST EASTERN PORTIONS OF THE  
AREA. THE ADVANCE EASTWARD OF A NORTHERN STREAM SHORTWAVE TROUGH  
JUST NORTH OF OUR REGION, COULD ADDITIONALLY ADD MORE NORTHERN  
SECTIONS OF THE AREA INTO PRECIPITATION CHANCES BY SUNDAY ON  
SUNDAY NIGHT. REGARDLESS OF THE DEGREE OF INTERACTION WITH THE  
COASTAL LOW REGARDING PRECIPITATION, FLOW AROUND BOTH THE RIDGE  
AND THE LOW WILL ALLOW FOR INCREASING TEMPERATURES THROUGH THE  
PERIOD.  
 
CONFIDENCE IN THE EXPECTED TEMPERATURE TREND IS HIGH. CONFIDENCE  
IN THE DEGREE OF PRECIPITATION IMPACTING PORTIONS OF OUR AREA  
IS LOW.  
 
 
   
LONG TERM /MONDAY THROUGH WEDNESDAY/  
 
AS OF 1230 AM EDT THURSDAY...  
 
KEY POINTS:  
 
1. GENERALLY DRY THROUGH THE PERIOD.  
2. ABOVE NORMAL TEMPERATURES.  
 
A LOOK A THE 8 OCT 00Z NCEP ENSEMBLE MEAN 500MB GEOPOTENTIAL  
HEIGHTS SHOWS FOR MONDAY/MONDAY NIGHT, A SHORTWAVE TROUGH/LOW  
IS EXPECTED TO HEAD NORTHEAST INTO NEW ENGLAND. A LONGWAVE  
TROUGH OVER WESTERN CONUS STALLS ACROSS ITS SOUTHERN EXTENT, AND  
PROGRESSES EASTWARD AT ITS NORTHERN EXTENT. THE RESULT IS  
EXPECTED TO BE A HIGHLY AMPLIFIED POSITIVELY TILTED FEATURE.  
RIDGING IS EXPECTED TO BUILD NORTH INTO THE MID-MISSISSIPPI AND  
LOWER OHIO VALLEYS. FOR TUESDAY/TUESDAY NIGHT, A RIDGE OF HIGH  
PRESSURE CONTINUES TO EXPAND NORTHWARD AND EASTWARD ACROSS MUCH  
OF THE SOUTH-CENTRAL AND SOUTHEAST US. A LONGWAVE TROUGH REMAINS  
STALLED OVER WESTERN CONUS. FOR WEDNESDAY, BROAD RIDGING  
CONTINUES OVER MOST OF THE SOUTH-CENTRAL AND SOUTHEAST US. A  
LONGWAVE TROUGH REMAINS STALLED OVER WESTERN CONUS. A SHORTWAVE  
TROUGH IS EXPECTED TO MOVE ALONG THE US/CANADIAN BORDER NEAR ND.  
 
AT THE SURFACE, FOR MONDAY/MONDAY NIGHT, A RIDGE OF HIGH  
PRESSURE REMAINS GENERALLY IN PLACE, EXTENDING FROM SOUTHEAST  
CANADA, SOUTHWEST TO ALONG THE SPINE OF THE APPALACHIANS,  
ALTHOUGH WEAKENED A BIT. THANKS CAN BE OFFERED TO THE GREAT  
LAKES SHORTWAVE TROUGH POTENTIALLY MERGING WITH THE LOW IN THE  
WESTERN ATLANTIC. LOW PRESSURE OFF THE VA/NC COAST IS EXPECTED  
TO SHIFT GENERALLY NORTHEAST, AGAIN POTENTIALLY MERGING WITH THE  
AFOREMENTIONED SHORTWAVE TROUGH. LOW PRESSURE IS EXPECTED TO  
MOVE EAST TO THE JAMES BAY AREA WITH ITS ASSOCIATED COLD FRONT  
CURVING SOUTHWEST INTO THE CENTRAL PLAINS STATES. FOR  
TUESDAY/TUESDAY NIGHT, A RIDGE OF HIGH PRESSURE CONTINUES TO BE  
CENTERED OVER THE APPALACHIANS. LITTLE CHANGE IS EXPECTED FOR  
WEDNESDAY.  
 
A LOOK AT THE 8 OCT 12Z NAEFS ENSEMBLE SITUATIONAL AWARENESS  
DATA SHOWS 850MB TEMPERATURES ON MONDAY RANGING FROM +11C TO  
+12C, ORIENTED NE-SW. FOR TUESDAY, VALUES TREND UPWARD TO +12C  
TO +13C, ORIENTED N-S. VALUES COOL SLIGHTLY FOR WEDNESDAY WITH A  
RANGE OF +10C TO +12C, NE-SW.  
 
THE ABOVE WEATHER PATTERNS OFFERS THE FOLLOWING FORECAST. AS THE  
COASTAL LOW EXITS NORTHEAST, THE RIDGE OVER THE REGION IS  
EXPECTED TO STRENGTHEN. OTHER THAN PERHAPS SOME DEPARTING RAIN  
EARLY MONDAY, THIS PORTION OF THE FORECAST IS LOOKING DRY.  
TEMPERATURES ARE EXPECTED TO BE ABOVE NORMAL.  
 
CONFIDENCE IN THE ABOVE WEATHER SCENARIO IS MODERATE TO HIGH.  
 
 
   
AVIATION /06Z THURSDAY THROUGH MONDAY/  
 
AS OF 200 AM EDT THURSDAY...  
 
VFR CONDITIONS WILL PREVAIL UNDER HIGH PRESSURE. WE MAY SEE  
SOME BRIEF FOG AT LWB EARLY THIS MORNING. ENE WIND GUSTS LOOK TO  
PICK UP TODAY DURING THE LATE MORNING AND EARLY AFTERNOON HOURS,  
WITH GUSTS TO AROUND 15-20 KNOTS POSSIBLE. WINDS LOOK TO  
DIMINISH AFTER SUNSET.  
 
EXTENDED AVIATION OUTLOOK...  
 
EXTENDED PERIOD OF DRY WEATHER BECOMING MORE LIKELY. THIS WILL  
RESULT IN WIDESPREAD VFR. WITH A DRIER AIR MASS, FOG DEVELOPMENT  
SHOULD BECOME LESS OF A CONCERN.  
 
 
   
RNK WATCHES/WARNINGS/ADVISORIES  
 
VA...FROST ADVISORY UNTIL 9 AM EDT THIS MORNING FOR VAZ020.  
FREEZE WATCH FROM LATE TONIGHT THROUGH FRIDAY MORNING FOR  
VAZ020.  
NC...NONE.  
WV...FROST ADVISORY UNTIL 9 AM EDT THIS MORNING FOR WVZ507-508.  
FREEZE WATCH FROM LATE TONIGHT THROUGH FRIDAY MORNING FOR  
WVZ507-508.  
 
 
 
 
 
SYNOPSIS...BMG/SH  
NEAR TERM...SH  
SHORT TERM...DS  
LONG TERM...DS  
AVIATION...SH  
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