A boundary was leftover from convection during the afternoon of the 24th near the southern border of West Virginia with Kentucky and Virginia. A narrow band of showers and thunderstorms redeveloped overnight along that boundary.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS RLX wrote it up.
A boundary was leftover from convection during the afternoon of the 24th near the southern border of West Virginia with Kentucky and Virginia. A narrow band of showers and thunderstorms redeveloped overnight along that boundary. The flow was parallel to the convective band, resulting in repetitive heavy rain over a portion of Buchanan County. Rain amounts of 1.5 to 2.1 inches were measured in less than an hour, with totals near 3 inches in less than 3 hours. Flash flooding occurred on small streams mainly north through east of Grundy. Grundy measured 2.1 inches for their 24 hour rain total.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, WV wrote its last area forecast discussion before the first event at Jul 24, 8:45 PM EST, 3 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON WV 945 PM EDT TUE JUL 24 2012 .SYNOPSIS... WEAK FRONT SETTLES SOUTH INTO CENTRAL WV AND SOUTHERN OHIO OVERNIGHT THEN LIFTS BACK NORTH WEDNESDAY AFTERNOON AND EVENING. COLD FRONT PASSES THURSDAY NIGHT INTO FRIDAY. && .NEAR TERM /UNTIL 8 AM WEDNESDAY MORNING/... WILL UPDATE FORECAST TO KEEP A BETTER CHANCE OF SHOWERS/THUNDERSTORMS ALONG THE COLD FRONT EDGING DOWN INTO THE REGION. && .SHORT TERM /8 AM WEDNESDAY MORNING THROUGH FRIDAY NIGHT/... WARM FRONTAL BOUNDARY WILL CONTINUE TO MOVE NORTH THROUGH THE CWA WEDNESDAY NIGHT...WITH WARM HUMID AIR SURGING BACK NORTH AGAIN AS IT DOES SO. THURSDAY LOOKS TO BE ANOTHER HOT AND HUMID DAY...WITH RISING HEIGHTS AHEAD OF APPROACHING UPPER TROUGH AND MAX TEMPERATURES IN THE LOWER TO MID 90S...AND DEW POINTS PROGGED TO REMAIN IN THE 70S...MAY NEED TO CONSIDER A HEAT ADVISORY FOR THURSDAY...PARTICULARLY ACROSS NORTHERN HALF OF CWA. WILL HIGHLIGHT THIS IN THE HWO FOR NOW. COLD FRONT WILL APPROACH CWA THURSDAY NIGHT/FRIDAY. OUT AHEAD OF THE FRONT...PLENTY OF WARM...UNSTABLE AIR...WITH MODELS SUGGESTING CAPE OF OVER 2000 J/KG...20-30KT 0-6KM SHEAR...AND 30-40 KT LLJ ACROSS THE CWA. A SLIGHT RISK HAS ALREADY BEEN ISSUED BY SPC FOR THURSDAY ACROSS NORTHERN ZONES. IN ADDITION...PW VALUES WILL ONCE AGAIN BE BACK UP TO AROUND 2 INCHES...HOWEVER...WITH THE OVERALL FAST FLOW ALOFT EXPECTED...THIS SHOULD HELP TO LIMIT ANY MAJOR WATER ISSUES...ALTHOUGH HEAVY DOWNPOURS ARE ONCE AGAIN EXPECTED. USED A BLEND OF THE MET/MAV FOR MAX TEMPERATURES IN THE SHORT TERM. && .LONG TERM /SATURDAY THROUGH TUESDAY/... ISOLD SHOWER/STORM ACTIVITY WILL PERSIST ACROSS THE CWA ON SATURDAY AS THE REGION REMAINS UNDER THE INFLUENCE OF AN UPPER LEVEL TROUGH. HOWEVER...HIGH PRESSURE WILL GRADUALLY BEGIN TO BUILD INTO THE REGION...PUSHING DRIER AIR INTO THE CWA. THIS WILL SET THE STAGE FOR A BRIEF DRY PERIOD SUNDAY INTO EARLY NEXT WEEK. REMAINDER OF THE LONG TERM LOOKS UNSETTLED. && .AVIATION /02Z WEDNESDAY THROUGH SUNDAY/... A WEAK FRONTAL BOUNDARY WILL SLIDE SOUTHWARD INTO THE REGION OVERNIGHT. IN ADDITION...A COUPLE OF UPPER AIR DISTURBANCES WILL MOVE ACROSS THE REGION OVERNIGHT. THEREFORE...CAN NOT RULE OUT SOME SHOWERS AND THUNDERSTORMS. EVEN WITH THIS ACTIVITY...WINDS WILL BECOME LIGHT OVERNIGHT. WITH RAINFALL TODAY AND HOLES IN THE CLOUDS EXPECTED...DENSE FOG SHOULD FORM. FRONTAL BOUNDARY WILL REMAIN IN THE AREA ON WEDNESDAY...WITH MORE SHOWERS AND THUNDERSTORMS POSSIBLE. FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 00Z THURSDAY... FORECAST CONFIDENCE: MEDIUM. ALTERNATE SCENARIOS: FOG/STRATUS DEVELOPMENT OVERNIGHT COULD VARY IN COVERAGE AND INTENSITY. TIMING OF SHOWERS AND THUNDERSTORMS COULD 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 WED 07/25/12 UTC 1HRLY 00 01 02 03 04 05 06 07 08 09 10 11 EDT 1HRLY 20 21 22 23 00 01 02 03 04 05 06 07 CRW CONSISTENCY M M M M M M H L L L L L HTS CONSISTENCY H H H M M M H H H M M M BKW CONSISTENCY M M H H H H H M M M H L EKN CONSISTENCY H H H H M M M L L L L L PKB CONSISTENCY H H H M M M M H H H M M CKB CONSISTENCY M H M M M M M H H H H M AFTER 00Z THURSDAY... IFR POSSIBLE IN CONVECTION THURSDAY AFTERNOON AND THURSDAY NIGHT. && .RLX WATCHES/WARNINGS/ADVISORIES... WV...NONE. OH...NONE. KY...NONE. VA...NONE. && SYNOPSIS...JMV/26 NEAR TERM...RPY SHORT TERM...SL LONG TERM...SL AVIATION...RPY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHARLESTON WV 351 PM EDT TUE JUL 24 2012 KYZ101>103-105-OHZ083-085>087-VAZ003-004-WVZ005>009-013>020-024>040- 046-047-252000- GREENUP-CARTER-BOYD-LAWRENCE KY-JACKSON OH-MEIGS-GALLIA-LAWRENCE OH- DICKENSON-BUCHANAN-WAYNE-CABELL-MASON-JACKSON WV-WOOD-LINCOLN-PUTNAM- KANAWHA-ROANE-WIRT-CALHOUN-RITCHIE-DODDRIDGE-MINGO-LOGAN-BOONE-CLAY- BRAXTON-GILMER-LEWIS-HARRISON-TAYLOR-MCDOWELL-WYOMING-RALEIGH- FAYETTE-NICHOLAS-WEBSTER-UPSHUR-BARBOUR-POCAHONTAS-RANDOLPH- 351 PM EDT TUE JUL 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST KENTUCKY...SOUTHEAST OHIO...SOUTHWEST VIRGINIA AND MUCH OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THERE IS A POTENTIAL FOR HEAVY RAIN WEDNESDAY WHICH MAY CAUSE FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. OHZ066-067-075-076-084-WVZ010-011-252000- PERRY-MORGAN-ATHENS-WASHINGTON-VINTON-PLEASANTS-TYLER- 351 PM EDT TUE JUL 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST OHIO AND NORTHERN WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THERE IS A POTENTIAL FOR HEAVY RAIN WEDNESDAY WHICH MAY CAUSE FLOODING. THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THURSDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Jackson,KY radar (KJKL), 102 km away, was scanning. The volume nearest the first event began at 05:18 UTC.
1 flash flood. Local standard time, as filed.
Creeks and their feeder runs overflowed. Some of the basins included along Home Creek, Slate Creek, and Dismal Creek. This caused minor flash flooding along vulnerable roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2012Every state in 2012This day in weather historyWarnings in Virginia, July 2012
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 397870.