Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

June 3, 2021Scott County, Tennessee

NWS Morristown, TN issued this special weather statement at Jun 3, 2021, 4:56 PM EDT for Scott County, Tennessee. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 3, 2021, 4:56 PM EDT (20:56 UTC)
Expired
Jun 3, 2021, 5:45 PM EDT
In force
49 min
Issued by
NWS Morristown, TN

County Scott County, TN

The radar

The Knoxville radar (KMRX), 103 km from the middle of the area, began a volume at 20:57 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, 8.9 hours before the alert went out and 191 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 2021-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 300 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 2021-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
300 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
837 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 3, 3:18 PM EDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jun 3, 3:18 PM EDT, 1 hour 38 minutes before
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Hazardous weather outlook, Jun 3, 3:03 PM EDT, 1 hour 53 minutes before
Hazardous Weather Outlook
National Weather Service Morristown TN
303 PM EDT Thu Jun 3 2021

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-041915-
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-
303 PM EDT Thu Jun 3 2021 /203 PM CDT Thu Jun 3 2021/

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

.DAY ONE...This Afternoon and Tonight

Scattered to widespread showers and thunderstorms will continue
into the evening hours. While widespread severe weather is not
expected, a few storms could be strong to severe, with damaging
winds and heavy rainfall being the primary threat. Some small hail
could also occur.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any severe weather to our office
today and tonight.

In the hours before

Special weather statement, Jun 3, 2:34 PM EDT, 2 hours 22 minutes before
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Special weather statement, Jun 3, 2:38 PM EDT, 2 hours 18 minutes before
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Special weather statement, Jun 3, 3:44 PM EDT, 1 hour 12 minutes before
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Special weather statement, Jun 3, 4:41 PM EDT, 15 minutes before
Special Weather Statement
National Weather Service Morristown TN
441 PM EDT Thu Jun 3 2021

TNZ012-032130-
Scott TN-
441 PM EDT Thu Jun 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SCOTT COUNTY UNTIL
530 PM EDT...

At 441 PM EDT, Doppler radar was tracking a strong thunderstorm near
Great Meadows Campsites, or 8 miles northwest of Oneida, moving east
at 15 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Oneida, Winfield and Big South Fork National Park.

LAT...LON 3659 8445 3647 8451 3650 8471 3660 8478
      3660 8471
TIME...MOT...LOC 2041Z 273DEG 12KT 3658 8463

BW
Local storm report, Jun 3, 4:42 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MORRISTOWN TN
442 PM EDT THU JUN 3 2021

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

0145 PM     FLASH FLOOD      3 SW CHATTANOOGA        35.03N 85.29W
06/03/2021                   HAMILTON           TN   BROADCAST MEDIA

            SOCIAL MEDIA VIDEO SHOWING STANDING WATER
            AND SEVERAL STALLED CARS ON THE ROADWAY.

0142 PM     FLASH FLOOD      CHATTANOOGA             35.07N 85.26W
06/03/2021                   HAMILTON           TN   FIRE DEPT/RESCUE

            REPORTS OF SEVERAL CARS STALLED ON FLOODED
            ROADWAYS.

0130 PM     FLASH FLOOD      4 SSW CHATTANOOGA       35.02N 85.29W
06/03/2021                   HAMILTON           TN   BROADCAST MEDIA

            ROSSVILLE BLVD AND CENTRAL AVE CLOSED DUE TO
            STANDING WATER.

1236 PM     FLASH FLOOD      CHATTANOOGA             35.07N 85.26W
06/03/2021                   HAMILTON           TN   LAW ENFORCEMENT

            REPORTS OF FLOODED ROADWAYS AND STANDING
            WATER ON ROADWAYS IN DOWNTOWN CHATTANOOGA.

&&
Special weather statement, Jun 3, 4:56 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Morristown TN
456 PM EDT Thu Jun 3 2021

TNZ012-032145-
Scott TN-
456 PM EDT Thu Jun 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SCOTT COUNTY UNTIL 545 PM
EDT...

At 455 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Helenwood, or 11 miles west of Oneida, moving east
at 30 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Oneida, Huntsville, Helenwood and Honey Creek State Park.

LAT...LON 3650 8434 3647 8434 3646 8435 3645 8434
      3642 8435 3641 8434 3636 8435 3638 8469
      3640 8466 3641 8467 3641 8466 3644 8469
      3650 8471 3652 8473
TIME...MOT...LOC 2055Z 271DEG 25KT 3649 8471

BW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 7:41 AM EDTSpecial Weather StatementMRXAnderson, Campbell, Morgan, Scott49 min
Jun 3, 8:26 AM EDTSpecial Weather StatementMRXAnderson, Campbell, Claiborne, Knox, Union49 min
Jun 3, 12:51 PM EDTSpecial Weather StatementMRXBradley, Polk39 min
Jun 3, 1:04 PM EDTSevere Thunderstorm WarningMRXPolk26 min
Jun 3, 1:30 PM EDTSpecial Weather StatementMRXBradley45 min
Jun 3, 2:34 PM EDTSpecial Weather StatementMRXPolk26 min
Jun 3, 4:41 PM EDTSpecial Weather StatementMRXScott49 min
Jun 3, 5:21 PM EDTSpecial Weather StatementMRXCampbell, Scott39 min
Jun 3, 7:14 PM EDTAreal Flood AdvisoryMRXMorgan, Scott3 hr
Jun 3, 2:38 PM EDTSpecial Weather StatementMRXCherokee52 min
Jun 3, 3:44 PM EDTSpecial Weather StatementMRXCherokee46 min

Nearby

Special Weather Statements in Tennessee, 2021Every special weather statement in 2021

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.