Alert archive / Tennessee / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 106, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 27, 2013, 3:41 AM EDT for Blount 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 counties it named.
The facts
- Issued
- Jun 27, 2013, 3:41 AM EDT (07:41 UTC)
- Expired
- Jun 27, 2013, 4:30 AM EDT
- In force
- 49 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
County Blount County, TN
The radar
The Knoxville radar (KMRX), 71 km from the middle of the area, began a volume at 07:43 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 26, 10:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 7.7 hours before the alert went out and 246 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.
- Mixed-layer CAPE
- 1699 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1406 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.3
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 27, 1:18 AM EDT, 2 hours 23 minutes earlier.
Area forecast discussion, Jun 27, 1:18 AM EDT, 2 hours 23 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 118 AM EDT THU JUN 27 2013 .AVIATION...COMPLEX OF STRONG TO SEVERE STORMS STARTING TO AFFECT TAF SITES AT THIS TIME...WITH THE STRONGER STORMS EXPECTED TO PASS THRU TYS AND CHA BEFORE DAYBREAK. A WIND SHIFT AND GUSTY WINDS WILL BE THE MAIN THREAT...AND A POSSIBILITY FOR AT LEAST A LOWERING TO MVFR CATEGORY AS THE STORMS PASS OVER. EXPECT IMPROVEMENT TO VFR AFTER MID TO LATE MORNING. WON'T RULE OUT NEW CONVECTION DEVELOPING INTO THE AFTERNOON...BUT OPTED FOR VCTS AND TEMPO SHOWERS FOR NOW. DECREASING CLOUDS IN THE EVENING MAY ALLOW FOR LOWERING CEILINGS AND VISBY AS PATCHY FOG TRIES TO DEVELOP BY OR AFTER 28/06Z. && .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && TG
Hazardous weather outlook, Jun 26, 2:57 PM EDT, 12 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MORRISTOWN TN 257 PM EDT WED JUN 26 2013 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-271900- 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- 257 PM EDT WED JUN 26 2013 /157 PM CDT WED JUN 26 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT... ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP DURING THE AFTERNOON HOURS ACROSS THE REGION. A COMPLEX OF THUNDERSTORMS IS EXPECTED TO INCREASE IN COVERAGE ACROSS THE OHIO VALLEY LATER THIS AFTERNOON AND EVENTUALLY BUILD INTO THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS TONIGHT. SOME OF THESE STORMS COULD BECOME SEVERE WITH THE PRIMARY THREAT BEING DAMAGING WINDS. LARGE HAIL AND EVEN AN ISOLATED TORNADO WILL ALSO BE POSSIBLE. IN ADDITION...RAINFALL AMOUNTS MAY REACH IN EXCESS OF 1 INCH PER HOUR WITH SOME OF THE STORMS WHICH MAY CAUSE MINOR FLOODING OF LOW LYING OR FLOOD PRONE AREAS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... STORMS FROM WEDNESDAY NIGHT MAY LINGER INTO THURSDAY MORNING. AN UPPER LEVEL TROUGH WILL DROP SOUTHWARD TO THE AREA ON FRIDAY...BRINGING A COLD FRONT AND ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. A FEW OF THESE STORMS MAY HAVE POTENTIAL TO PRODUCE STRONG GUSTY WINDS AND HAIL. THE TROUGH WILL PERSIST OVER THE EASTERN HALF OF THE COUNTRY THROUGH TUESDAY...WITH A CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. WHILE THE POTENTIAL FOR SEVERE WEATHER APPEARS LOW AT THIS TIME THROUGH THE WEEKEND AND EARLY NEXT WEEK...LOCALLY HEAVY RAINFALL MAY BE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT INTO THURSDAY.
In the hours before
Special weather statement, Jun 27, 1:29 AM EDT, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MORRISTOWN TN 129 AM EDT THU JUN 27 2013 TNZ017-018-046-270615- JOHNSON TN-NORTHWEST CARTER TN-SULLIVAN TN- 129 AM EDT THU JUN 27 2013 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CARTER...JOHNSON AND SULLIVAN COUNTIES UNTIL 215 AM EDT... AT 125 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8 MILES NORTH OF JOHNSON CITY...MOVING EAST AT 40 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MOUNTAIN CITY...BLUFF CITY...SOUTH HOLSTON DAM...SADIE...DOEVILLE...SHADY VALLEY AND NEVA. DGS
Local storm report, Jun 27, 2:03 AM EDT, 1 hour 38 minutes before
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</html>Local storm report, Jun 27, 2:15 AM EDT, 1 hour 26 minutes before
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</html>Special weather statement, Jun 27, 2:45 AM EDT, 56 minutes before
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</html>Local storm report, Jun 27, 2:52 AM EDT, 49 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 12:18 AM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Claiborne, Morgan, Scott, Union | 57 min |
| Jun 27, 1:13 AM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Claiborne, Grainger, Knox, Scott and 1 more | 47 min |
| Jun 27, 1:20 AM EDT | Areal Flood Advisory | MRX | Sullivan, Washington | 115 min |
| Jun 27, 1:39 AM EDT | Tornado Warning | MRX | Claiborne, Hancock | 36 min |
| Jun 27, 2:01 AM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Cocke, Grainger, Greene, Hamblen, Hancock and 3 more | 44 min |
| Jun 27, 2:05 AM EDT | Severe Thunderstorm Warning | MRX | Anderson, Blount, Knox, Sevier, Union | 40 min |
| Jun 27, 3:36 AM EDT | Areal Flood Advisory | MRX | Blount, Sevier | 54 min |
| Jun 27, 5:12 PM EDT | Severe Thunderstorm Warning | MRX | Jefferson, Knox, Sevier | 48 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2013Every severe thunderstorm warning in 2013
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.