Alert archive / Tennessee / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS Morristown, TN

July 23, 2016Blount County, Monroe County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jul 23, 2016, 5:24 PM EDT for Blount County, Monroe County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 23, 2016, 5:24 PM EDT (21:24 UTC)
Expired
Jul 23, 2016, 8:30 PM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Flood severity
None

Counties Blount County, TN, Monroe County, TN

The radar

The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 21:26 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 242 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 2016-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1181 joules per kilogram.LCLLFCEL10008507005003002001001 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 2016-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
1181 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
963 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

009 
WGUS54 KMRX 232124
FFWMRX
TNC009-123-240030-
/O.NEW.KMRX.FF.W.0003.160723T2124Z-160724T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
524 PM EDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN BLOUNT COUNTY IN EASTERN TENNESSEE...
  NORTHEASTERN MONROE COUNTY IN EASTERN TENNESSEE...

* UNTIL 830 PM EDT

* AT 523 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. TWO TO THREE INCHES OF RAIN
  HAVE ALREADY FALLEN WITHIN THE LAST HOUR. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY...PARTICULARLY ALONG RIVERS AND STREAMS
  IN AND NEAR THE GREAT SMOKY MOUNTAINS! ADDITIONAL HEAVY RAINFALL
  IS EXPECTED TO OCCUR OVER THE NEXT HOUR. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MARYVILLE...ALCOA...GREENBACK...HAPPY VALLEY...CITICO BEACH...
  CLOVER HILL...TALASSEE AND DEALS GAP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 3541 8403 3562 8417 3565 8413 3566 8413
      3567 8416 3569 8414 3577 8399 3555 8378
      3552 8382 3552 8388 3547 8392 3546 8396
      3542 8401

$$

AMP.23
2 follow-up statements
107 
WGUS74 KMRX 232233
FFSMRX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
633 PM EDT SAT JUL 23 2016

TNC009-123-240030-
/O.CON.KMRX.FF.W.0003.000000T0000Z-160724T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLOUNT TN-MONROE TN-
633 PM EDT SAT JUL 23 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
SOUTHWESTERN BLOUNT AND NORTHEASTERN MONROE COUNTIES...

AT 631 PM EDT...DOPPLER RADAR INDICATED THAT EARLIER THUNDERSTORMS
PRODUCED UP TO THREE INCHES OF RAINFALL IN THE WARNED AREA. THIS HAS
LEAD TO SOME SHARP WATER RISES ON MOUNTAIN STREAMS AND CREEKS WITHIN
THE WESTERN PORTIONS OF THE GREAT SMOKY MOUNTAINS...AS WELL AS SOME
MINOR FLOODING ACROSS THE WESTERN HALF OF BLOUNT COUNTY. RAINFALL
HAS TAPERED OFF...ANY ANY WATER SHOULD RECEDE OVER THE NEXT HOUR OR
TWO. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MARYVILLE...ALCOA...GREENBACK...HAPPY VALLEY...CITICO BEACH...
CLOVER HILL...TALASSEE AND DEALS GAP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 3541 8403 3562 8417 3565 8413 3566 8413
      3567 8416 3569 8414 3577 8399 3555 8378
      3552 8382 3552 8388 3547 8392 3546 8396
      3542 8401

$$

AMP.23
212 
WGUS74 KMRX 232325
FFSMRX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
725 PM EDT SAT JUL 23 2016

TNC009-123-232335-
/O.CAN.KMRX.FF.W.0003.000000T0000Z-160724T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLOUNT TN-MONROE TN-
725 PM EDT SAT JUL 23 2016

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN BLOUNT AND NORTHEASTERN
MONROE COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND ANY FLOOD WATERS HAVE RECEDED.
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3541 8403 3562 8417 3565 8413 3566 8413
      3567 8416 3569 8414 3577 8399 3555 8378
      3552 8382 3552 8388 3547 8392 3546 8396
      3542 8401

$$

AMP.23

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:57 PM EDTSpecial Weather StatementMRXPolk48 min
Jul 23, 3:09 PM EDTSpecial Weather StatementMRXMarion51 min
Jul 23, 4:22 PM EDTSpecial Weather StatementMRXBradley53 min
Jul 23, 4:23 PM EDTSpecial Weather StatementMRXBlount52 min
Jul 23, 4:33 PM EDTSpecial Weather StatementMRXMonroe42 min
Jul 23, 5:31 PM EDTAreal Flood AdvisoryMRXBradley, Polk3 hr
Jul 23, 5:38 PM EDTAreal Flood AdvisoryMRXMeigs, Rhea, Roane2 hr
Jul 23, 5:48 PM EDTSpecial Weather StatementMRXLoudon42 min
Jul 23, 6:21 PM EDTSpecial Weather StatementMRXRoane39 min
Jul 23, 6:22 PM EDTSpecial Weather StatementMRXRhea38 min
Jul 23, 6:40 PM EDTSpecial Weather StatementMRXSullivan50 min
Jul 23, 7:24 PM EDTSpecial Weather StatementMRXSevier51 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.