Alert archive / Tennessee / Flash Flood Warnings in 2016

Flash Flood Warning 9, NWS Morristown, TN

August 8, 2016Bledsoe County, Tennessee

NWS Morristown, TN issued this flash flood warning at Aug 8, 2016, 5:26 PM CDT for Bledsoe County, Tennessee. It was in force for 2 hr. 2 reports 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
Aug 8, 2016, 5:26 PM CDT (22:26 UTC)
Expired
Aug 8, 2016, 7:30 PM CDT
In force
2 hr
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Flood severity
None

County Bledsoe County, TN

The radar

The Northeast Alabama radar (KHTX), 100 km from the middle of the area, began a volume at 22:28 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

TimeReportWhereRemark
Aug 8, 5:55 PM CDTFLASH FLOOD5 Ssw Pikeville, TNSEVERAL ROADWAYS FLOODED ACROSS THE SOUTHERN HALF OF THE COUNTY.
Aug 8, 6:10 PM CDTFLASH FLOOD4 Ssw Pikeville, TNSEVERAL REPORTS OF ROADWAY FLOODING...INCLUDING ON HWY 28/127.

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, 10.4 hours before the alert went out and 140 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 2016-08-08Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2016-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
939 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

371 
WGUS54 KMRX 082226
FFWMRX
TNC007-090030-
/O.NEW.KMRX.FF.W.0009.160808T2226Z-160809T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
526 PM CDT MON AUG 8 2016

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BLEDSOE COUNTY IN EASTERN TENNESSEE...

* UNTIL 730 PM CDT

* AT 525 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PIKEVILLE...PALIO...FALL CREEK FALLS STATE PARK...BRAYTON AND OLD
  CUMBERLAND.

ADDITIONAL RAINFALL AMOUNTS UP TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 3557 8542 3567 8531 3562 8505 3557 8511
      3553 8510 3552 8513 3550 8514 3548 8512
      3545 8515 3545 8517 3536 8523 3546 8537
      3550 8541 3552 8541 3554 8543

$$

DH
1 follow-up statement
317 
WGUS74 KMRX 082313
FFSMRX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
613 PM CDT MON AUG 8 2016

TNC007-090030-
/O.CON.KMRX.FF.W.0009.000000T0000Z-160809T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLEDSOE TN-
613 PM CDT MON AUG 8 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
BLEDSOE COUNTY...

AT 610 PM CDT...BLEDSOE COUNTY EMERGENCY MANAGEMENT REPORTED SEVERAL
ROADWAYS FLOODED ACROSS THE SOUTHERN HALF OF THE COUNTY. MODERATE TO
HEAVY RAIN WILL CONTINUE THROUGH 645 PM.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PIKEVILLE...PALIO...FALL CREEK FALLS STATE PARK...BRAYTON AND OLD
CUMBERLAND.

ADDITIONAL RAINFALL AMOUNTS UP TO 1 INCH IS POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 3557 8542 3567 8531 3562 8505 3557 8511
      3553 8510 3552 8513 3550 8514 3548 8512
      3545 8515 3545 8517 3536 8523 3546 8537
      3550 8541 3552 8541 3554 8543

$$

DH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:59 PM CDTAreal Flood AdvisoryMRXHamilton, Marion2 hr
Aug 8, 4:45 PM CDTAreal Flood AdvisoryMRXBledsoe, Hamilton, Meigs, Rhea, Sequatchie2 hr
Aug 8, 5:52 PM CDTAreal Flood AdvisoryMRXMorgan, Scott3 hr

Nearby

Flash Flood Warnings in Tennessee, 2016Every flash flood warning in 2016

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.