Alert archive / Tennessee / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Morristown, TN

July 14, 2015Blount County, Knox County, Sevier County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jul 14, 2015, 10:02 AM EDT for Blount County, Knox County, Sevier County, Tennessee. It was in force for 118 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 14, 2015, 10:02 AM EDT (14:02 UTC)
Expired: Jul 14, 2015, 12:00 PM EDT
In force: 118 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Flood severity: None

Counties Blount County, TN, Knox County, TN, Sevier County, TN

The radar

The Knoxville radar (KMRX), 66 km from the middle of the area, began a volume at 14:03 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.

What was reported inside it

Time	Report	Where	Remark
Jul 14, 11:00 AM EDT	FLASH FLOOD	Townsend, TN	MINOR FLOODING IN TOWNSEND WITH SEVERAL INCHES OF WATER ACROSS ROADS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 2.0 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1670 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

490 
WGUS54 KMRX 141402
FFWMRX
TNC009-093-155-141600-
/O.NEW.KMRX.FF.W.0013.150714T1402Z-150714T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1002 AM EDT TUE JUL 14 2015

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN KNOX COUNTY IN EAST TENNESSEE...
  BLOUNT COUNTY IN EAST TENNESSEE...
  SOUTHWESTERN SEVIER COUNTY IN EAST TENNESSEE...

* UNTIL NOON EDT
    
* AT 1001 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN THAT WILL REPEATEDLY MOVE OVER THE SAME AREAS. FLASH 
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  KNOXVILLE...OAK RIDGE...MARYVILLE...ALCOA...GATLINBURG...
  FARRAGUT...LOUISVILLE...ROCKFORD...EAGLETON VILLAGE...
  FRIENDSVILLE...TOWNSEND...WILDWOOD...WALLAND...SEYMOUR...ELKMONT...
  LAKE FOREST...HAPPY VALLEY...CLOVER HILL...KARNS AND WEARS VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE 
INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE 
USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS 
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING 
FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3579 8417 3581 8417 3590 8427 3594 8427
      3593 8424 3595 8424 3594 8422 3596 8422
      3600 8411 3608 8398 3561 8342 3561 8344
      3556 8350 3556 8359 3558 8361 3557 8363
      3556 8376 3553 8382 3550 8390

$$

DGS

2 follow-up statements

007 
WGUS74 KMRX 141440
FFSMRX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1040 AM EDT TUE JUL 14 2015

TNC009-093-155-141600-
/O.CON.KMRX.FF.W.0013.000000T0000Z-150714T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX TN-BLOUNT TN-SEVIER TN-
1040 AM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL NOON EDT FOR
SOUTHERN KNOX...BLOUNT AND SOUTHWESTERN SEVIER COUNTIES...

AT 1039 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS ALREADY
FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
KNOXVILLE...OAK RIDGE...MARYVILLE...ALCOA...GATLINBURG...FARRAGUT...
LOUISVILLE...ROCKFORD...EAGLETON VILLAGE...FRIENDSVILLE...TOWNSEND...
WILDWOOD...WALLAND...SEYMOUR...ELKMONT...LAKE FOREST...HAPPY
VALLEY...CLOVER HILL...KARNS AND WEARS VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3579 8417 3581 8417 3590 8427 3594 8427
      3593 8424 3595 8424 3594 8422 3596 8422
      3600 8411 3608 8398 3561 8342 3561 8344
      3556 8350 3556 8359 3558 8361 3557 8363
      3556 8376 3553 8382 3550 8390

$$

DGS

497 
WGUS74 KMRX 141523
FFSMRX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1123 AM EDT TUE JUL 14 2015

TNC009-093-155-141532-
/O.CAN.KMRX.FF.W.0013.000000T0000Z-150714T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX TN-BLOUNT TN-SEVIER TN-
1123 AM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING FOR SOUTHERN KNOX...BLOUNT AND
SOUTHWESTERN SEVIER COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 3579 8417 3581 8417 3590 8427 3594 8427
      3593 8424 3595 8424 3594 8422 3596 8422
      3600 8411 3608 8398 3561 8342 3561 8344
      3556 8350 3556 8359 3558 8361 3557 8363
      3556 8376 3553 8382 3550 8390

$$

DGS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 5:16 AM EDT	Special Weather Statement	MRX	Hancock	44 min
Jul 14, 5:59 AM EDT	Special Weather Statement	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 1 more	46 min
Jul 14, 6:28 AM EDT	Areal Flood Advisory	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	3 hr
Jul 14, 6:32 AM EDT	Areal Flood Advisory	MRX	Claiborne, Cocke, Grainger, Greene, Hamblen, Hancock and 2 more	3 hr
Jul 14, 6:44 AM EDT	Special Weather Statement	MRX	Cocke, Greene, Jefferson	46 min
Jul 14, 7:31 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hancock, Hawkins	44 min
Jul 14, 7:33 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Grainger, Jefferson, Knox, Scott and 1 more	42 min
Jul 14, 8:08 AM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Claiborne, Scott, Union	112 min
Jul 14, 8:13 AM EDT	Special Weather Statement	MRX	Anderson, Cocke, Grainger, Greene, Hamblen, Hawkins and 6 more	47 min
Jul 14, 8:42 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	48 min
Jul 14, 8:55 AM EDT	Special Weather Statement	MRX	Blount, Sevier	50 min
Jul 14, 9:02 AM EDT	Areal Flood Advisory	MRX	Anderson, Blount, Knox, Sevier	118 min
Jul 14, 9:30 AM EDT	Special Weather Statement	MRX	Anderson, Jefferson, Knox, Morgan, Roane, Union	45 min
Jul 14, 9:52 AM EDT	Special Weather Statement	MRX	Blount	38 min
Jul 14, 10:01 AM EDT	Severe Thunderstorm Warning	MRX	Blount, Sevier	20 min
Jul 14, 10:17 AM EDT	Severe Thunderstorm Warning	MRX	Morgan, Roane	43 min
Jul 14, 10:23 AM EDT	Areal Flood Advisory	MRX	Blount, Loudon, Monroe, Roane	112 min
Jul 14, 10:57 AM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe, Roane	48 min
Jul 14, 11:04 AM EDT	Special Weather Statement	MRX	Hancock	26 min
Jul 14, 11:50 AM EDT	Areal Flood Advisory	MRX	Hancock	115 min
Jul 14, 11:59 AM EDT	Special Weather Statement	MRX	Hancock	46 min
Jul 14, 12:20 PM EDT	Severe Thunderstorm Warning	MRX	Scott	55 min
Jul 14, 12:31 PM EDT	Special Weather Statement	MRX	Polk	44 min
Jul 14, 12:34 PM EDT	Flash Flood Warning	MRX	Claiborne, Greene, Hancock, Hawkins	4 hr
Jul 14, 12:48 PM EDT	Special Weather Statement	MRX	Hancock, Hawkins	57 min
Jul 14, 1:17 PM EDT	Special Weather Statement	MRX	Campbell	43 min
Jul 14, 1:40 PM EDT	Special Weather Statement	MRX	Hawkins	35 min
Jul 14, 1:44 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins	46 min
Jul 14, 1:52 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Union	53 min
Jul 14, 1:58 PM EDT	Severe Thunderstorm Warning	MRX	Scott	47 min
Jul 14, 2:06 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Unicoi, Washington	22 min
Jul 14, 2:39 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Jefferson	36 min
Jul 14, 2:44 PM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Grainger, Knox, Morgan, Scott and 1 more	3 hr
Jul 14, 2:51 PM EDT	Severe Thunderstorm Warning	MRX	Morgan	31 min
Jul 14, 3:05 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Knox, Union	55 min
Jul 14, 3:08 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Jefferson	67 min
Jul 14, 3:12 PM EDT	Severe Thunderstorm Warning	MRX	Morgan, Roane	48 min
Jul 14, 3:15 PM EDT	Flash Flood Watch	MRX	Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 18 more	13 hr
Jul 14, 3:15 PM EDT	Tornado Warning	MRX	Morgan	15 min
Jul 14, 3:35 PM EDT	Severe Thunderstorm Warning	MRX	Morgan	40 min
Jul 14, 3:37 PM EDT	Areal Flood Advisory	MRX	Knox, Loudon, Meigs, Morgan, Rhea, Roane	3 hr
Jul 14, 3:54 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, Morgan, Roane	66 min
Jul 14, 4:29 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, McMinn, Meigs, Rhea	61 min
Jul 14, 4:34 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, McMinn, Monroe	56 min
Jul 14, 4:36 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, Sevier	54 min
Jul 14, 4:58 PM EDT	Tornado Warning	MRX	McMinn, Monroe	47 min
Jul 14, 5:13 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Hamilton, McMinn, Meigs, Monroe, Rhea	3 hr
Jul 14, 5:23 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Meigs, Monroe, Polk, Rhea	67 min
Jul 14, 5:27 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Bradley, Hamilton, Marion, Meigs, Rhea and 1 more	63 min
Jul 14, 5:29 PM EDT	Severe Thunderstorm Warning	MRX	Monroe	46 min
Jul 14, 5:48 PM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton, Marion, Polk, Sequatchie	3 hr
Jul 14, 6:23 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	37 min
Jul 14, 6:27 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, Marion, Sequatchie	48 min

Nearby

Flash Flood Warnings in Tennessee, 2015 Every flash flood warning in 2015

Sources

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