Alert archive / Tennessee / Flash Flood Warnings in 2012
Flash Flood Warning 7, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Apr 6, 2012, 12:05 AM EDT for Blount County, Knox 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
- Apr 6, 2012, 12:05 AM EDT (04:05 UTC)
- Expired
- Apr 6, 2012, 3:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Blount County, TN, Knox County, TN
The radar
The Knoxville radar (KMRX), 71 km from the middle of the area, began a volume at 04:08 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 00:00Z, 4.1 hours before the alert went out and 221 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
- 2 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 461 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
741
WGUS54 KMRX 060405
FFWMRX
TNC009-093-060700-
/O.NEW.KMRX.FF.W.0007.120406T0405Z-120406T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
1205 AM EDT FRI APR 6 2012
THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BLOUNT COUNTY IN EAST TENNESSEE...
KNOX COUNTY IN EAST TENNESSEE...
THIS INCLUDES THE CITY OF KNOXVILLE...
* UNTIL 300 AM EDT
* AT 1155 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
FLOODING ACROSS KNOX COUNTY...ESPECIALLY ACROSS WESTERN AVE OF
KNOXVILLE. NUMEROUS REPORTS OF FLOODED ROADWAYS AND FLOODING OF
LOW LYING AREAS HAVE BEEN REPORTED BY KNOX COUNTY LAW
ENFORCEMENT. LIGHT TO MODERATE RAIN WILL CONTINUE ACROSS
THE WARNED AREA UNTIL AROUND 2 AM.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POWELL...
KARNS AND HALLS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3590 8427 3592 8425 3594 8427 3593 8424
3595 8424 3595 8422 3597 8422 3600 8419
3599 8414 3603 8406 3607 8409 3617 8395
3597 8372 3574 8411
$$
DH2 follow-up statements
425
WGUS74 KMRX 060519
FFSMRX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
119 AM EDT FRI APR 6 2012
TNC009-093-060700-
/O.CON.KMRX.FF.W.0007.000000T0000Z-120406T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX TN-BLOUNT TN-
119 AM EDT FRI APR 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR
BLOUNT AND KNOX COUNTIES...
AT 112 AM EDT...KNOX COUNTY LOCAL LAW ENFORCEMENT OFFICIALS CONTINUE
TO REPORT FLOODING ACROSS WESTERN AVE NEAR THE INTERSECTION OF THE
640 BY-PASS. ALSO...SEVERAL REPORTS OF PONDING OF LOW LYING AREAS
AND STREET FLOODING CONTINUES ACROSS KNOX COUNTY. AN AREA OF LIGHT
TO MODERATE RAIN WITH CONTINUE ACROSS THE WARNED AREA WITH ADDITIONAL
RAINFALL UP TO ONE-HALF INCH POSSIBLE.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KNOXVILLE
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM RECENT HEAVY RAINFALL WILL CAUSE FLOODING OF
SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. DO NOT DRIVE
YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE
WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE
TO HIGHER GROUND.
&&
LAT...LON 3590 8427 3592 8425 3594 8427 3593 8424
3595 8424 3595 8422 3597 8422 3600 8419
3599 8414 3603 8406 3607 8409 3617 8395
3597 8372 3574 8411
$$
DH171
WGUS74 KMRX 060653
FFSMRX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
253 AM EDT FRI APR 6 2012
TNC009-093-060702-
/O.EXP.KMRX.FF.W.0007.000000T0000Z-120406T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KNOX TN-BLOUNT TN-
253 AM EDT FRI APR 6 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 300 AM EDT FOR BLOUNT AND
KNOX COUNTIES...
THE HEAVY RAINFALL THAT PROMPTED THE WARNING HAS ENDED ACROSS THE
WARNED AREA...AND THE FLOOD THREAT HAS DIMINISHED. THEREFORE...THE
WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3590 8427 3592 8425 3594 8427 3593 8424
3595 8424 3595 8422 3597 8422 3600 8419
3599 8414 3603 8406 3607 8409 3617 8395
3597 8372 3574 8411
$$
DHThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 11:14 PM EDT | Areal Flood Advisory | MRX | Blount, Knox, Loudon | 3 hr |
| Apr 6, 3:21 AM EDT | Frost Advisory | MRX | Anderson, Bledsoe, Blount, Campbell, Carter, Claiborne and 19 more | 31 hr |
Nearby
Flash Flood Warnings in Tennessee, 2012Every flash flood warning in 2012
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.