Alert archive / Virginia / Flash Flood Watches in 2018

Flash Flood Watch 3, NWS Morristown, TN

June 26, 20187 counties in Virginia

NWS Morristown, TN issued this flash flood watch at Jun 26, 2018, 1:09 PM EDT for 7 counties in Virginia. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Jun 26, 2018, 1:09 PM EDT (17:09 UTC)
Expired
Jun 26, 2018, 8:00 PM EDT
In force
7 hr
Issued by
NWS Morristown, TN
Flood severity
None

Counties City of Bristol, VA, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The radar

The Knoxville radar (KMRX), 109 km from the middle of the area, began a volume at 17:12 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.2 hours before the alert went out and 243 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, Greensboro/Hi Pt, NC at 12:00Z on 2018-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Greensboro/Hi Pt, NC at 12:00Z on 2018-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
73 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 watch 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 watch went out at Jun 26, 1:08 PM EDT, 1 minute earlier.

Area forecast discussion, Jun 26, 1:08 PM EDT, 1 minute before
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Hazardous weather outlook, Jun 26, 3:14 AM EDT, 9 hours 55 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
314 AM EDT Tue Jun 26 2018

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-270715-
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-
314 AM EDT Tue Jun 26 2018 /214 AM CDT Tue Jun 26 2018/

This Hazardous Weather Outlook is for portions of Southwest North
Carolina...East Tennessee and Southwest Virginia.

.DAY ONE...Today and Tonight

Strong to severe storms are expected this afternoon with damaging
winds being the primary threat. Hail up to quarter size and
localized flash flooding will also be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Scattered thunderstorms are expected to develop over the Southern
Appalachian Region Wednesday afternoon. A few of these storms may
become strong or severe, producing damaging winds, hail and heavy
rainfall with localized flash flooding possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be need this afternoon and again on
Wednesday afternoon.

In the hours before

Local storm report, Jun 26, 11:40 AM EDT, 1 hour 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1140 AM EDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1120 AM     TSTM WND DMG     WISE                    36.98N 82.58W
06/26/2018                   WISE               VA   911 CALL CENTER

            SEVERAL TREES DOWN IN WISE.

&&
Local storm report, Jun 26, 11:42 AM EDT, 1 hour 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1142 AM EDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1120 AM     FLOOD            POUND                   37.12N 82.61W
06/26/2018                   WISE               VA   911 CALL CENTER

            WATER ACROSS ROUTE 23.

&&
Special weather statement, Jun 26, 12:14 PM EDT, 55 minutes before
Special Weather Statement
National Weather Service Morristown TN
1214 PM EDT TUE JUN 26 2018

VAZ006-008-261700-
Washington VA-Russell VA-
1214 PM EDT TUE JUN 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN RUSSELL AND
WASHINGTON COUNTIES AND THE CITY OF BRISTOL UNTIL 100 PM EDT...

At 1212 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Lebanon to 9 miles west of Abingdon to 11
miles north of Walnut Hill. Movement was southeast at 30 mph.

Wind gusts up to 50 mph will be possible with these storms.  Also,
localized flooding of low spots will be possible.

Locations impacted include...
Bristol Va, Abingdon, Lebanon, Glade Spring, Damascus, Emory-Meadow
View, Lindell, Collingwood, Holston, Hansonville, Hilander Park,
Benhams and Konnarock.

LAT...LON 3661 8166 3662 8192 3660 8194 3661 8229
      3678 8236 3681 8224 3692 8208 3680 8171
      3664 8162 3663 8161
TIME...MOT...LOC 1612Z 299DEG 27KT 3683 8203 3676 8213 3671 8233

GM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 4:41 AM EDTSpecial Weather StatementMRXHamblen49 min
Jun 26, 5:23 AM EDTSpecial Weather StatementMRXCocke52 min
Jun 26, 6:07 AM EDTSpecial Weather StatementMRXHamblen53 min
Jun 26, 2:45 PM EDTSpecial Weather StatementMRXHancock45 min
Jun 26, 3:31 PM EDTSpecial Weather StatementMRXGrainger44 min
Jun 26, 3:39 PM EDTSpecial Weather StatementMRXScott66 min
Jun 26, 4:02 PM EDTSevere Thunderstorm WarningMRXGrainger, Hamblen, Hawkins43 min
Jun 26, 4:08 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Scott, Union67 min
Jun 26, 4:21 PM EDTSevere Thunderstorm WarningMRXMorgan39 min
Jun 26, 4:26 PM EDTSpecial Weather StatementMRXClaiborne, Hancock49 min
Jun 26, 4:30 PM EDTSevere Thunderstorm WarningMRXCocke, Greene60 min
Jun 26, 4:49 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger, Hamblen, Hancock, Hawkins, Jefferson and 3 more41 min
Jun 26, 4:57 PM EDTSevere Thunderstorm WarningMRXAnderson, Blount, Knox, Loudon, Morgan, Roane48 min
Jun 26, 5:15 PM EDTAreal Flood AdvisoryMRXCocke, Grainger, Greene, Hamblen, Hawkins2 hr
Jun 26, 5:27 PM EDTSevere Thunderstorm WarningMRXBlount, Cocke, Greene, Hamblen, Jefferson, Knox and 1 more78 min
Jun 26, 5:34 PM EDTSevere Thunderstorm WarningMRXBledsoe, Blount, Knox, Loudon, McMinn, Meigs and 3 more56 min
Jun 26, 5:41 PM EDTSpecial Weather StatementMRXGreene, Hawkins64 min
Jun 26, 5:50 PM EDTAreal Flood AdvisoryMRXAnderson, Blount, Knox, Loudon, Meigs, Morgan and 2 more115 min
Jun 26, 6:07 PM EDTSpecial Weather StatementMRXUnicoi38 min
Jun 26, 6:25 PM EDTSevere Thunderstorm WarningMRXBledsoe, Blount, Bradley, Hamilton, McMinn, Meigs and 4 more65 min
Jun 26, 6:43 PM EDTAreal Flood AdvisoryMRXBledsoe, McMinn, Meigs, Monroe, Rhea2 hr
Jun 26, 6:49 PM EDTSpecial Weather StatementMRXUnicoi56 min
Jun 26, 6:52 PM EDTAreal Flood AdvisoryMRXGreene53 min
Jun 26, 7:17 PM EDTSevere Thunderstorm WarningMRXBradley, Hamilton, Marion, Polk, Sequatchie58 min
Jun 26, 10:58 AM EDTSevere Thunderstorm WarningMRXWise, City of Norton47 min
Jun 26, 11:37 AM EDTSevere Thunderstorm WarningMRXRussell, Scott, Washington, Wise, City of Bristol38 min
Jun 26, 12:14 PM EDTSpecial Weather StatementMRXWashington, City of Bristol46 min
Jun 26, 12:52 PM EDTAreal Flood AdvisoryMRXRussell, Washington, City of Bristol113 min

Nearby

Flash Flood Watches in Virginia, 2018Every flash flood watch in 2018

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.