Tropical Storm Gordon came ashore along the central Gulf Coast on the night of September 4th. The tropical cyclone dissipated over Missouri by the night of September 7th.
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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 PBZ wrote it up.
Tropical Storm Gordon came ashore along the central Gulf Coast on the night of September 4th. The tropical cyclone dissipated over Missouri by the night of September 7th. Moisture from the decaying tropical system interacted with a surface low and frontal boundary, spreading heavy rainfall across Garrett County over a 3 day period. 72 hour totals ranged from 2 inches to a little over 7 inches. Numerous roads were reported to be closed on September 9th due to flooding.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Sep 6, 6:57 PM EST, 5 hours 3 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 757 PM EDT Thu Sep 6 2018 .SYNOPSIS... Showers and thunderstorms continue to wind down Thursday evening ahead of a cold front that will push through the region by Friday morning. Wet weather will continue through the early part of next week as the remnants from tropical system Gordon approach the area. && .NEAR TERM /THROUGH FRIDAY/... 615pm update...Showers and storms winding down as weak surface boundary slowly moves toward the southeast. The upper level support is also drifting to the east, so expect all of the activity to diminish this evening. Lows will be warm / above average once again overnight as cloud cover and warmer-than-typical air will keep temperatures in the 60s. && .SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/... Friday and Saturday will be much cooler than the first portions of this week as somewhat cooler air filters under persistent overcast sky. A quasi-zonal area of mid-level convergence north of the surface front will set-up somewhere near or just south of the Mason-Dixon line. This will act as a focus for showers and perhaps a thunderstorm for Friday evening through much of Saturday. Rainfall totals through Saturday will generally be light. && .LONG TERM /MONDAY THROUGH THURSDAY/... The confidence in a heavy rainfall event Sunday and Monday continues to increase. The remnants of Gordon begin to move northeast into the region Saturday night and Sunday. The aforementioned frontal boundary will begin to push northward. Model guidance is in good agreement with the placement of Gordon, though slight shifts in track and mesoscale morphology will ultimately determine precipitation totals. Global models and GFS ensembles have become more tightly clustered regarding rainfall totals. A widespread area of 2-4 inches appears likely, with higher amounts possible where the mesoscale banding sets up. Rainfall will come to an end by Monday night in most areas, with the exception of the ridges which will see showers stay around for a bit longer. Afterwards, models are in good agreement with an amplified upper trough/ridge pattern shaping up by mid-week. However, model disagreement does exist with the forecast for Hurricane Florence and how it may (or may not) affect sensible weather across the eastern CONUS, including the Pittsburgh region. && .AVIATION /00Z FRIDAY THROUGH TUESDAY/... Temporary vsby restrictions this hour at KDUJ where some of the last remaining SHRA is. Weak cold air advection behind the front and abundant boundary layer moisture should support a transition to MVFR conditions overnight/early morning at all sites except KPIT which remains VFR with TEMPO vis/ceiling MVFR restrictions around sunrise. IFR vsbys with denser fog are expected at KFKL, KDUJ, and KHLG overnight where ample rainfall has occurred this evening. VFR conditions should return to all sites by 16Z. Outlook... General restrictions are possible Friday with lower clouds. Periodic restrictions are possible through the weekend. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 406 PM EDT Thu Sep 6 2018 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-072015- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Beaver-Allegheny-Armstrong-Indiana- Washington-Greene-Westmoreland-Westmoreland Ridges-Fayette- Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 406 PM EDT Thu Sep 6 2018 This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The remnants of tropical depression Gordon will interact with a stalled front across the region over the weekend. Showers and thunderstorms with persistent heavy rain may lead to the potential for flooding through Monday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
The national radar mosaic for the moment the first event began.
2 heavy rain, 2 flood. Local standard time, as filed.
A CoCoRaHs site in Mountain Lake Park, MD recorded a rainfall total from Friday (Sept 7th) to Sunday (Sept 9th) of 4.41 inches.
CoCoRaHS observer reported 72 rainfall total of 6.95 inches; location 2 miles WSW of Warnocks.
The local emergency manager reported SR 495 is closed due to flooding.
The local 911 Center reported up to 20 roads are closed throught the county due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2018Every state in 2018This day in weather historyWarnings in Maryland, September 2018
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: 785463, 785603, 785465, 785466.