Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 189, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Oct 14, 2014, 12:24 AM EDT for Hamilton County, Marion County, Sequatchie County, Tennessee. It was in force for 51 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
- Oct 14, 2014, 12:24 AM EDT (04:24 UTC)
- Expired
- Oct 14, 2014, 1:15 AM EDT
- In force
- 51 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
Counties Hamilton County, TN, Marion County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 70 km from the middle of the area, began a volume at 04:26 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 |
|---|---|---|---|
| Oct 13, 11:44 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 4.4 hours before the alert went out and 148 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
- 187 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1109 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 568 m²/s²
- Significant tornado parameter
- 0.4
- 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 Oct 13, 8:48 PM EDT, 3 hours 36 minutes earlier.
Area forecast discussion, Oct 13, 8:48 PM EDT, 3 hours 36 minutes before
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</html>Hazardous weather outlook, Oct 13, 12:10 PM EDT, 12 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MORRISTOWN TN 1210 PM EDT MON OCT 13 2014 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005- 006-008-141200- 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- 1210 PM EDT MON OCT 13 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWEST VIRGINIA...AND EXTREME SOUTHWEST NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT... A STRONG STORM SYSTEM AND ITS ASSOCIATED COLD FRONT WILL SLOWLY APPROACH THE REGION TONIGHT...BRINGING A STRONG SOUTHEASTERLY WIND FLOW OVER THE MOUNTAINS. STRONG WIND GUSTS ARE EXPECTED OVER THE MOUNTAINS AND THEIR ADJACENT FOOTHILLS TONIGHT INTO TUESDAY...WHERE A HIGH WIND WARNING IS IN EFFECT. A LINE OF SHOWERS AND THUNDERSTORMS WILL ALSO APPROACH THE REGION LATE TONIGHT TOWARDS SUNRISE...WITH SOME OF THESE STORMS POSSIBLY BECOMING STRONG TO SEVERE NEAR THE CUMBERLAND PLATEAU. DAMAGING WINDS WILL BE THE PRIMARY THREAT...ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... A COLD FRONT WITH A STRONG WIND FIELD WILL SLOWLY MOVE INTO THE AREA ON TUESDAY...BRINGING AN EXTENSIVE AREA OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAINFALL. DUE TO THE SLOW MOVEMENT OF THE COLD FRONT... FLOODING WILL BE A THREAT ON TUESDAY AND TUESDAY NIGHT. SOME STORMS ON TUESDAY MAY ALSO BECOME SEVERE WITH DAMAGING WINDS... AND AN ISOLATED TORNADO OR TWO WILL ALSO BE POSSIBLE. STRONG WIND GUSTS WILL ALSO CONTINUE ACROSS THE MOUNTAINS AND THEIR ADJACENT FOOTHILLS ON TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED ON TUESDAY AND TUESDAY NIGHT.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 1:24 AM EDT | Special Weather Statement | MRX | Bledsoe, Hamilton, Marion, Meigs, Rhea, Sequatchie | 51 min |
| Oct 14, 4:05 AM EDT | Special Weather Statement | MRX | Bradley, McMinn, Meigs | 40 min |
| Oct 14, 4:55 AM EDT | Flash Flood Warning | MRX | Hamilton, Marion, Sequatchie | 3 hr |
| Oct 14, 7:41 AM EDT | Areal Flood Warning | MRX | Hamilton | 3 hr |
| Oct 14, 8:12 AM EDT | Areal Flood Advisory | MRX | Anderson, Blount, Grainger, Jefferson, Knox, Loudon and 2 more | 3 hr |
| Oct 14, 8:22 AM EDT | Severe Thunderstorm Warning | MRX | Cocke, Grainger, Hamblen, Jefferson, Knox, Sevier | 28 min |
| Oct 14, 8:49 AM EDT | Special Weather Statement | MRX | Grainger, Hamblen, Hancock, Hawkins | 41 min |
| Oct 14, 9:19 AM EDT | Special Weather Statement | MRX | Bledsoe, Rhea | 41 min |
| Oct 14, 10:34 AM EDT | Areal Flood Advisory | MRX | Bradley, Hamilton, McMinn, Meigs, Rhea | 116 min |
| Oct 14, 11:42 AM EDT | Areal Flood Advisory | MRX | Anderson, Campbell, Loudon, Morgan, Roane, Scott | 2 hr |
| Oct 14, 1:29 PM EDT | Areal Flood Advisory | MRX | Anderson, Blount, Campbell, Claiborne, Grainger, Jefferson and 4 more | 3 hr |
| Oct 14, 1:41 PM EDT | Areal Flood Advisory | MRX | Monroe, Polk | 2 hr |
| Oct 14, 2:28 PM EDT | Special Weather Statement | MRX | Blount, Knox | 47 min |
| Oct 14, 3:03 PM EDT | Special Weather Statement | MRX | Grainger, Hamblen, Jefferson | 42 min |
| Oct 14, 3:22 PM EDT | Areal Flood Advisory | MRX | Blount, Claiborne, Cocke, Grainger, Greene, Hamblen and 4 more | 3 hr |
| Oct 14, 4:23 PM EDT | Areal Flood Advisory | MRX | Blount, Claiborne, Grainger, Hancock, Jefferson, Knox and 2 more | 112 min |
| Oct 14, 3:40 PM EDT | Areal Flood Advisory | MRX | Cherokee, Clay | 3 hr |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2014Every severe thunderstorm warning in 2014
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.