The weakening tropical system that was once Irma moved inland through the Deep South across the Western part of Tennessee generating a period of strong and gusty wind. A few trees were reported down with the passage of the low.
Every event with a place to put it; 3 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 MRX wrote it up.
The weakening tropical system that was once Irma moved inland through the Deep South across the Western part of Tennessee generating a period of strong and gusty wind. A few trees were reported down with the passage of the low.
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 Morristown, TN wrote its last area forecast discussion before the first event at Sep 11, 2:21 PM EST, 2 hours 39 minutes earlier.
Area Forecast Discussion
National Weather Service Morristown TN
321 PM EDT Mon Sep 11 2017
.SHORT TERM...(Tonight and Tomorrow)...
Irma will continue to impact the area through Tuesday. Not much
change vs. previous forecast with regards to impacts for our area.
The low pressure center is expected to track across GA and AL
towards west TN through Tuesday. Winds will continue to increase
through the rest of the afternoon and evening hours, topping out
with gusts over 50 mph across the highest terrain. Valley
locations will likely see gusts of 40-50 mph. A wind advisory
remains in effect through tomorrow afternoon for the entire
forecast area. Already seeing some gusts over 40mph in the higher
terrain of NE GA/SW NC, so will have to continue to monitor
observations throughout the evening to ensure gusts stay below
high wind warning criteria at the highest elevations. Latest QPF
forecast from WPC indicates a period of heavier rain across the
lower Cumberland Plateau from 00-06Z, so have increased storm
total rainfall amounts slightly across this area to just around 3"
in Marion County. With this event being of a longer duration,
river levels and soil moisture should be able to handle this
amount without widespread flooding problems, although localized
heavier amounts are possible and will need to be monitored. Drier
air wrapping around the circulation and a continued downslope flow
off the mountains on Tuesday will result in lowering rain chances
and lighter precip for most areas.
.LONG TERM...(Tuesday night through Monday)...The remnants of
Irma are expected to be centered around the MS Valley Tuesday
night and will lift northeast Wednesday through Thursday night. We
should continue to see clouds/showers especially western portions
of the area Tue night into early Wednesday, then spreading across
the rest of the area later Wednesday and especially Wed night
before diminishing from southwest to northeast Thursday/Thursday
night. Will carry highest PoPs Wed night most areas. High pressure
surface and aloft is forecast to build in behind this system,
with drier conditions expected for the Friday through Monday time
frame.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN 60 65 60 71 / 100 70 50 50
Knoxville McGhee Tyson Airport, TN 57 74 59 74 / 80 70 20 30
Oak Ridge, TN 55 72 59 71 / 80 60 30 40
Tri Cities Airport, TN 55 74 56 78 / 80 70 20 20
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...Wind Advisory until 2 PM EDT Tuesday for Cherokee-Clay.
TN...Wind Advisory until 2 PM EDT Tuesday for Blount Smoky Mountains-
Cocke Smoky Mountains-East Polk-Johnson-Sevier Smoky
Mountains-Southeast Carter-Southeast Greene-Southeast
Monroe-Unicoi.
Wind Advisory until 11 AM EDT /10 AM CDT/ Tuesday for Anderson-
Bledsoe-Bradley-Campbell-Claiborne-Grainger-Hamblen-
Hamilton-Hancock-Hawkins-Jefferson-Knox-Loudon-Marion-
McMinn-Meigs-Morgan-NW Blount-North Sevier-Northwest Carter-
Northwest Cocke-Northwest Greene-Northwest Monroe-Rhea-
Roane-Scott TN-Sequatchie-Sullivan-Union-Washington TN-West
Polk.
VA...Wind Advisory until 11 AM EDT Tuesday for Lee-Russell-Scott-
Washington-Wise.
&&
EMH/LWHazardous Weather Outlook National Weather Service Morristown TN 309 PM EDT Mon Sep 11 2017 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-121915- Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins- Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen- Northwest Cocke-Cocke Smoky Mountains-Northwest Greene- Southeast Greene-Washington TN-Unicoi-Northwest Carter- Southeast Carter-Roane-Loudon-Knox-Jefferson-NW Blount- Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains- Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee- Wise-Scott-Russell-Washington- 309 PM EDT Mon Sep 11 2017 /209 PM CDT Mon Sep 11 2017/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight The remnants of Irma will track across the Southeast today, with its impacts felt in the Tennessee Valley region today through Tuesday morning. Gusty winds and locally heavy rainfall can be expected, expecially from this afternoon through tonight. The highest rainfall amounts are expected to be in the Southern Tennessee Valley, where 2-3 inches of rain will be possible, with lesser amounts in the northern and central Valley. Wind gusts of 40 to 50 mph are expected across the entire area, and a Wind Advisory is in effect. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
3 high wind. Local standard time, as filed.
A gust to 60 mph was recorded at Clingmans Dome tower.
Several trees and power lines were reported down across the county.
A gust to 66 mph was recorded at the Clingmans Dome tower.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2017Every state in 2017This day in weather historyWarnings in Tennessee, September 2017
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: 720243, 720246, 720247.