Alert archive / Tennessee / Flash Flood Warnings in 2019

Flash Flood Warning 12, NWS Morristown, TN

June 9, 2019McMinn County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jun 9, 2019, 6:42 PM EDT for McMinn County, Tennessee. It was in force for 83 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 9, 2019, 6:42 PM EDT (22:42 UTC)
Expired
Jun 9, 2019, 8:05 PM EDT
In force
83 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Flood severity
None

County McMinn County, TN

The radar

The Knoxville radar (KMRX), 137 km from the middle of the area, began a volume at 22:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.7 hours before the alert went out and 195 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2019-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 560 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2019-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
560 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
567 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Jun 9, 3:01 PM EDT, 3 hours 41 minutes earlier.

Area forecast discussion, Jun 9, 3:01 PM EDT, 3 hours 41 minutes before
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Hazardous weather outlook, Jun 9, 2:58 PM EDT, 3 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
258 PM EDT Sun Jun 9 2019

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-101900-
Cherokee-Clay-Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-
Johnson-Morgan-Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest 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-Russell-
258 PM EDT Sun Jun 9 2019 /158 PM CDT Sun Jun 9 2019/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...This Afternoon and Tonight

Showers and a few thunderstorms may be locally heavy this
afternoon into early tonight. Localized flooding will remain
possible, especially in areas that get repeated heavier showers or
storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Showers and thunderstorms will produce locally heavy rainfall
again on Monday. The threat of localized flooding will continue
in areas that see repeated heavier showers or storms.

.SPOTTER INFORMATION STATEMENT...

Spotter reports of any flooding this afternoon through Monday
will be appreciated.

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 8:50 PM EDTAreal Flood AdvisoryMRXCarter, Johnson, Sullivan3 hr
Jun 9, 4:20 AM EDTAreal Flood AdvisoryMRXGreene, Hawkins, Sullivan, Unicoi, Washington4 hr
Jun 9, 8:04 AM EDTAreal Flood AdvisoryMRXJohnson, Sullivan3 hr
Jun 9, 12:10 PM EDTAreal Flood AdvisoryMRXCarter, Johnson, Sullivan, Unicoi, Washington5 hr
Jun 9, 5:59 PM EDTAreal Flood AdvisoryMRXBradley, Polk2 hr
Jun 9, 6:00 PM EDTAreal Flood AdvisoryMRXMcMinn2 hr
Jun 9, 7:56 PM EDTAreal Flood AdvisoryMRXHamilton2 hr
Jun 8, 9:48 PM EDTAreal Flood AdvisoryMRXWashington, City of Bristol3 hr

Nearby

Flash Flood Warnings in Tennessee, 2019Every flash flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.