High pressure was centered across New Jersey and dense fog formed in sheltered valleys across the Highlands.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
High pressure was centered across New Jersey and dense fog formed in sheltered valleys across the Highlands.
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 Sep 17, 8:41 PM EST, 5 hours 54 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 941 PM EDT TUE SEP 17 2013 .SYNOPSIS... CANADIAN HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION OVERNIGHT AND WILL STALL ALONG THE NORTHERN MID-ATLANTIC COAST WEDNESDAY INTO FRIDAY. A COLD FRONT APPROACHES FROM THE WEST ON SATURDAY. && .NEAR TERM /THROUGH 6 AM WEDNESDAY/... SOME OF THE LOWEST DEWPOINTS IN MONTHS SETTLED ACROSS OVER THE REGION...THOUGH A SLIGHT REBOUND TAKING PLACE LATE THIS EVE. HIGH PRESSURE FIRMLY ENTRENCHED OVER THE REGION - STRETCHING ACROSS THE ERN SEABOARD FROM NEW ENGLAND TO THE CAROLINAS. A LARGER VIEW OF THE REGION SHOWS THE LOWEST DEWPOINTS WEDGED UP TO THE APLCNS. DEWPOINT VALUES IN THE 30S EARLIER THIS AFTN WERE CENTERED OVER PA...W/ COOL NELY FLOW PUSHING THEM DOWN INTO THE NRN SECTIONS OF THE CWA. AS THE CENTER OF THE HIGH BEGINS TO SHIFT OFF THE COAST...SFC FLOW HAS GONE ELY AND A SLIGHTLY MORE HUMID ONSHORE FLOW HAS BROUGHT THEM UP INTO THE 40S AND A FEW 50S. THIS FLOW HOWEVER WILL BEGIN TO HAVE LESS OF AN EFFECT ON THE WRN HALF OF THE CWA AS THE ERN HALF...AS WINDS DIE DOWN OVERNIGHT. TEMPS WILL DROP FASTER ACROSS THE WRN HALF OF THE CWA TONIGHT THAN THE ERN HALF...DROPPING WELL INTO THE 40S AND A FEW 30S IN SHELTERED VLYS. MEANWHILE...LOCALES FROM THE VA/MD PIEDMONT AND EAST WILL STAY IN THE M-U40S AND L50S IN THE METRO AREAS. && .SHORT TERM /WEDNESDAY THROUGH THURSDAY/... A SHORTWAVE TROUGH WILL BE MOVING INTO THE OHIO VALLEY EARLY WEDNESDAY. MID-HIGH LEVEL CLOUDS WILL MOVE OVER THE MTNS AND INCREASE THROUGH THE DAY. HIGH PRESSURE WILL BE LOCATED ACROSS THE MID ATLANTIC LEADING TO DRY CONDITIONS WEDNESDAY. TEMPS WILL BE SLIGHTLY WARMER WEDNESDAY AS CAA CEASES OVER THE REGION. THIS SHORTWAVE IS EXPECTED TO DIVE SOUTHWARD ACROSS THE CENTRAL FOOTHILLS THROUGH THE EVENING WHILE WINDS VEER TO THE E-SE. DRY CONDITIONS AND SUBSIDENCE WILL KEEP CONDITIONS MAINLY DRY INTO THURSDAY MORNING. AN ISOLATED SHOWER FROM TERRAIN CIRCULATIONS ACROSS THE HIGHER ELEVATIONS WILL BE POSSIBLE THURSDAY AFTERNOON. FCST SOUNDINGS SHOW A CAPPED ENVIRONMENT BUT THE HIGH WILL BE MOVING OFF THE COAST AS SOUTHERLY FLOW INCREASES. TEMPS WILL BE CLOSE TO CLIMO THURSDAY AS WINDS VEER TO THE SOUTH. DEWPTS WILL ALSO INCREASE THROUGHOUT THE DAY. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... THE SFC HIGH CONTINUES TO DRIFT OUT TO SEA FRIDAY WITH WARM AIR AND MOISTURE ADVECTION CONTINUING. MORE SCT THUNDERSTORMS WEST FROM THE BLUE RIDGE WITH MAX TEMPS INTO THE 80S FOR MOST OF THE LOWER ELEVATIONS. 00Z GFS/ECMWF IN DISAGREEMENT ON A WAVE APPROACHING THE EASTERN SEABOARD. THE GFS CLOSES THE LOW AND FEATURES A STRONGER CAROLINA COASTAL SYSTEM WHILE THE ECMWF IS MORE OF A PLAIN COLD FRONT CROSSING THE AREA. WILL HAVE TO WATCH THIS...AS OF NOW THE ISSUE IS SIMPLY TIMING OF AND AMOUNT OF POPS. THE SPRAWLING ERN SEABOARD HIGH WILL CONTINUE TO OPEN THE GULF OF MEXICO AND ALLOW MOISTURE FROM THE REMNANTS OF INGRID TO PUMP INTO THE CENTRAL US. HOWEVER...ANY SOLUTION SIMPLY PROVIDES NEEDED RAIN...NOT FLOODING CONCERNS. && .AVIATION /01Z WEDNESDAY THROUGH SUNDAY/... VFR CONDITIONS EXPECTED TODAY AND TONIGHT. RADITIONAL COOLING IS EXPECTED THIS EVENING AND LOW STRATUS MAY FORM AGAIN BY MORNING AS WINDS VEER OUT OF THE NE-E BY WED MORNING. LOW CONFIDENCE AT STRATUS ANY OF THE TERMINALS DIRECTLY AT THIS TIME. VFR WEDNESDAY THROUGH THE END OF THE WORK WEEK AS HIGH PRESSURE PERSISTS OVER THE AREA. ONSHORE FLOW WEDNESDAY BECOMING SLY FOR LATE IN THE WEEK AHEAD OF AN APPROACHING COLD FRONT THIS WEEKEND. && .MARINE... THE CENTER OF HIGH PRESSURE SITTING TO THE NORTH AND EAST OF THE AREA AND WILL DRIFT OFFSHORE IN THE COMING HRS...W/ THE SFC FLOW REFLECTING THIS MOVE. THE NELY WINDS HAVE GONE MAINLY ELY AND WILL CONTINUE TO TURN MORE SELY INTO WED...BUT REMAIN LIGHT AND ONLY A FEW NEAR 15KT GUSTS EXPECTED. NELY/ELY FLOW WEDNESDAY BEFORE VEERING SLY THURSDAY AHEAD OF THE NEXT COLD FRONT THAT APPROACHES THIS WEEKEND. && .TIDES/COASTAL FLOODING... TIDAL ANOMALIES ARE NEAR TO BELOW NORMAL IN RESPONSE TO NLY WINDS. TIDES WILL INCREASE TNGT AS WINDS VEER AND ONSHORE FLOW DEVELOPS. LATEST FCST GUIDANCE SHOWS POSITIVE TIDAL ANOMALIES OF AROUND ONE- HALF FOOT DURING HIGH TIDE TNGT...WHICH WOULD BE SEVERAL INCHES BELOW THE THRESHOLD NEEDED TO PRODUCE MINOR COASTAL FLOODING AT ANNAPOLIS AND WASHINGTON CHANNEL. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && UPDATE...GMS PREV DISCUSSION...HAS/BAJ
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1221 AM EDT WED SEP 18 2013 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 181030- 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- 1221 AM EDT WED SEP 18 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 A COASTAL FLOOD ADVISORY IS IN EFFECT FROM 2 AM TO 7 AM FOR ANNE ARUNDEL COUNTY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-181030- 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- 1221 AM EDT WED SEP 18 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 NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
2 dense fog. Local standard time, as filed.
Visibilities of a quarter mile or less were reported at Petersburg airport and satellite.
Visibilities of a quarter mile or less were estimated from Petersburg airport and satellite.
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, September 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: 478008, 478009.