A surface trough was over the area while an upper level disturbance moved overhead. Showers and thunderstorms produced heavy rainfall as they moved over the mountains.
Every event with a place to put it. Tap one for its entry below.
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 LWX wrote it up.
A surface trough was over the area while an upper level disturbance moved overhead. Showers and thunderstorms produced heavy rainfall as they moved over the mountains.
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 Baltimore/Washington wrote its last area forecast discussion before the first event at Jul 22, 5:02 PM EST, 2 hours 58 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
602 PM EDT MON JUL 22 2013
.SYNOPSIS...
A WEAK TROUGH WILL REMAIN ACROSS THE REGION INTO TUESDAY AS AN
UPPER LEVEL DISTURBANCE APPROACHES THE MID-ATLANTIC TODAY FROM THE
MIDWEST. A COLD FRONT WILL APPROACH LATE TUESDAY INTO EARLY
WEDNESDAY...AND REMAIN NEAR OR JUST EAST OF THE AREA THROUGH
THURSDAY.
&&
.NEAR TERM /THROUGH TUESDAY/...
MADE CHANGES TO SENSIBLE WEATHER ELEMENTS FOR THE REMAINDER OF
TODAY AND TONIGHT. BEST COVERAGE OF SHOWERS AND ISOLATED
THUNDERSTORMS WILL BE WEST OF THE BLUE RIDGE WITHIN THE FLASH
FLOOD WATCH WITH ISOLATED TO SCATTERED COVERAGE EXPECTED EAST OF
THE BLUE RIDGE AND ACROSS THE METRO AREAS. LOWERED POPS TO SLIGHT
CHANCE TO CHANCE LEVELS EAST AND KEPT LIKELY WEST WITH NUMEROUS
COVERAGE EXPECTED. PWATS CONTINUE TO RUN HIGH AND WE EXPECT HEAVY
DOWNPOURS WITH THE STRONGER STORMS THAT DEVELOP. LOCALIZED FLASH
FLOODING WILL BE A CONCERN AND WE WILL CONTINUE THE WATCH AS
INHERITED.
KEPT MAINLY CHANCE POPS TONIGHT. MOIST LOW LEVELS AND ANY CLEARING
WILL LEAD TO PATCHY FOG OVERNIGHT. WILL CONTINUE MENTION OVER ALL
SECTIONS. MIN TEMPS TONIGHT UPR 60S WEST OF THE BLUE RIDGE...LOW
TO MID 70S EAST.
ADDITIONAL ENERGY WILL SWING ACROSS THE REGION ON TUESDAY BRINGING
THE POTENTIAL FOR ADDITIONAL SCATTERED SHOWERS/STORMS. HIGHS IN
THE 80S MOST LOCALES TO NEAR 90 EAST.
&&
.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY/...
COLD FRONT WILL SWEEP ACROSS THE REGION TUESDAY NIGHT INTO EARLY
WEDNESDAY. HIGH PRESSURE WILL BUILD EAST FROM THE GREAT LAKES WITH
IMPROVING CONDITIONS TO FOLLOW.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
THE ATYPICAL SUMMER-TIME PATTERN CONTINUES INTO THE SECOND HALF OF
THE WEEK. AFTER THE FIRST UPPER VORT LOBE SLIPS BY TO THE NORTH
MON/TUE...ANOTHER IS EXPECTED TO DEVELOP BEHIND IT TAKE A FEW MORE
DAYS TO DRIFT TOWARD THE ATLC COAST. THE MUCH SLOWER MOVEMENT OF
THIS FEATURE WILL KEEP US IN GENERALLY THE SAME PATTERN FOR THESE
FEW DAYS...WHICH IS A GOOD 10 DEG COOLER FOR MAX TEMPS NEARLY EACH
DAY. DEWPOINTS WILL CONTINUE TO HOVER AROUND THE M-U60S W/ PERIODS
OF L70S BUT STILL NOT AS MUGGY AND HOT AS THIS PAST WEEK.
IN TERMS OF FORECAST TRENDS...THIS TYPE OF UPPER LEVEL PATTERN MORE
COMMONLY ASSOCIATED W/ THE TRANSITIONAL SEASONS...IS BEING RESOLVED
WELL BETWEEN THE DIFFERENT NEAR AND LONG TERM MODELS...ESPECIALLY W/
THE MID WEEK TRANSLATION BETWEEN OUTGOING AND INCOMING UPPER WAVE
FEATURES. NAM/EURO AND BASICALLY ALL BUT THE GFS'S LATEST RUNS
DEPICT A MINOR SHORTWAVE GETTING CAUGHT NEAR AND JUST SOUTH OF OUR
AREA GOING FROM WED INTO THU. THIS FEATURE IS THEN DEPICTED AS
DEVELOPING AN UPPER LOW ABOUT THE CWA WHICH WRAPS ITS OWN BATCHES OF
SHOWER/TSTM ACTIVITY AROUND IT.
AFTER CUTTING DOWN ON POPS QUITE A BIT ON WED...W/ THE LARGER
SUBSIDENCE REGION OF THE UPPER TROUGH DIPPING SWD OVER OUR
AREA...THU HAS THE CHANCE TO BE THE COOLER/WETTER DAY OF THIS LATE
WEEK PERIOD. DEPENDING ON HOW THIS FEATURE ACTS AND REACTS TO
CONTINUAL INFLUENCE FROM THE UPPER WAVE OVER THE GREAT LAKES - IT
MAY CONTINUE TO RESIDE OVER THE AREA INTO FRI OR BEGIN THE TREK OFF
THE MID ATLC COAST. LEANED MORE TOWARD THE SYSTEM MOVING AWAY BY FRI
MRNG.
AFTER THE GFS/EURO DIVERGE FOR THE END OF THE WORK WEEK...THEY
LARGELY COME BACK TOGETHER FOR THE WEEKEND. ANOTHER PIECE OF THE
UPPER WAVE'S ENERGY WILL SWING DOWN ACROSS THE UPPER MIDWEST THIS
WEEKEND...GIVEN THE AFOREMENTIONED DEPENDENCIES...AND SLIDE A MORE
POTENT AND PRECIP-LADEN SHORTWAVE ACROSS THE MID ATLC. CAN SEE THIS
PROG CHANGING QUITE A BIT W/ EVEN A MINOR SWING IN GUIDANCE...SO
KEPT A LOW POP ON SAT AND SLIGHTLY HIGHER ON SUN.
&&
.AVIATION /22Z MONDAY THROUGH SATURDAY/...
NUMEROUS SHOWERS AND ISOLATED STORMS WEST OF THE BLUE RIDGE...LESS
COVERAGE EAST OF THE MOUNTAINS. WILL CONTINUE CB/VCTS WORDING
WITHIN THE TAFS AS CONFIDENCE IN ANY SHOWER/STORM DIRECTLY
IMPACTING A TERMINAL IS LOW. PATCHY FOG EXPECTED OVERNIGHT WITH
SOME VSBY RESTRICTIONS TO AT LEAST MVFR IN SPOTS.
APPROACHING CDFNT WL LEAD TO MORE TSRA TUE.
MODEL GUIDANCE TRENDING TOWARD A DRIER WED...W/ ONLY A FEW PASSING
SHOWERS AND POSSIBLY AN ISLD TSTM. THE SAME HOLDS THRU THE END OF
THE WEEK AND INTO THE WEEKEND. THE STRONGER WX FEATURES WILL PASS BY
TO THE NORTH OVER THE NEXT SEVERAL DAYS...THOUGH WE'LL STILL HAVE A
MARGINALLY MOIST/UNSTABLE AIRMASS - ENOUGH TO KEEP IN THE LOW
PROBABILITIES FOR AN OUTSIDE SHOWER/TSTM. THE BEST CHANCES FOR
ORGANIZED PRECIP AND BREEZIER LOW LEVEL FLOW WILL BE THE COMING
WEEKEND W/ THE APPROACH AND PASSAGE OF A SMALLER-SCALE UPPER LEVEL
FEATURE.
&&
.MARINE...
SLY FLOW AROUND 10 KT UP THE MAIN PORTION OF THE BAY WITH A BAY
BREEZE FOR NEARSHORE. LOCALLY HIGHER GUSTS INTO THE 20-30KT RANGE
POSSIBLE IN SHOWERS/ISOLATED STORMS THIS EVENING.
WLY FLOW BEGINS TUE NGT AS A CDNFT MAKES IT TO THE WATERS. STILL
DONT XPCT WNDS OUTSIDE OF TSRA TO BE MUCH ABV 10 KT...BUT IT WL BE
A LTL HIER THAN TDA.
WITHOUT A SIGNIFICANT WX FEATURE TO SWING ACROSS THE AREA OVER THE
NEXT SEVERAL DAYS...WINDS WILL BE VERY LIGHT FOR MUCH OF THE SECOND
HALF OF THE WEEK. THE WEEKEND MAY RESULT IN SOME BREEZIER CONDITIONS
BUT STILL BELOW SCA W/ ONLY SOME LOW CHANCE POPS.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...FLASH FLOOD WATCH UNTIL MIDNIGHT EDT TONIGHT FOR MDZ501-502.
VA...FLASH FLOOD WATCH UNTIL MIDNIGHT EDT TONIGHT FOR VAZ025>027-
029-030-036>040-503-504.
WV...FLASH FLOOD WATCH UNTIL MIDNIGHT EDT TONIGHT FOR WVZ050-055-
501>506.
MARINE...NONE.
&&
SYNOPSIS...BAJ/HTS
NEAR TERM...KRW
SHORT TERM...KRW
LONG TERM...GMS
AVIATION...GMS/KRW
MARINE...GMS/KRWHAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 500 PM EDT MON JUL 22 2013 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 231000- CHESAPEAKE BAY NORTH OF POOLES ISLAND MD- CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD- CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD- CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD- CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA- TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD- TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD- TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA- PATAPSCO RIVER INCLUDING BALTIMORE HARBOR- CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY- CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER- PATUXENT RIVER TO BROOMES ISLAND MD- TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-DISTRICT OF COLUMBIA-NORTHERN BALTIMORE-HARFORD- SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS- CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE- 500 PM EDT MON JUL 22 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF COLUMBIA. .DAY ONE...TONIGHT SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON INTO THE EVENING HOURS. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL AND LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE POTENTIAL FOR THUNDERSTORMS WITH HEAVY RAIN CONTINUES INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...ANY REPORTS OF FLOODING WOULD BE APPRECIATED. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-231000- WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA- ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON- ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- WESTERN PENDLETON-EASTERN PENDLETON- 500 PM EDT MON JUL 22 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA... NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND WITH THE EXCEPTION OF GARRETT COUNTY. .DAY ONE...TONIGHT A FLASH FLOOD WATCH IS IN EFFECT FOR THE POTOMAC HIGHLANDS... CENTRAL SHENANDOAH VALLEY...AND THE CENTRAL VIRGINIA FOOTHILLS FROM NOON UNTIL MIDNIGHT. SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS WILL DEVELOP AND CONTINUE INTO THE LATE EVENING. SOME OF THE STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH WILL ENHANCE THE THREAT FOR LOCALIZED FLASH FLOODING WITHIN THE WATCH AREA. AREAS TO THE EAST WILL SEE LESS COVERAGE OF SHOWERS AND STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE POTENTIAL FOR THUNDERSTORMS WITH HEAVY RAIN CONTINUES INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...ANY REPORTS OF FLOODING WOULD BE APPRECIATED.
The Sterling radar (KLWX), 96 km away, was scanning. The volume nearest the first event began at 01:01 UTC.
1 flash flood. Local standard time, as filed.
There were three roads closed by water over the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2013Every state in 2013This day in weather historyWarnings in West Virginia, July 2013
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: 467773.