Flash Flood Warning 21, NWS Morristown, TN

Issued

Mar 28, 2021, 8:43 AM EDT (12:43 UTC)

Expired

Mar 28, 2021, 12:38 PM EDT

In force

4 hr

Issued by

NWS Morristown, TN

Area

Storm-based polygon

Flood severity

None

Counties Greene County, TN, Hawkins County, TN, Unicoi County, TN, Washington County, TN

The Knoxville radar (KMRX), 68 km from the middle of the area, began a volume at 12:44 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.

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

419 
WGUS54 KMRX 281243
FFWMRX
TNC059-073-171-179-281645-
/O.NEW.KMRX.FF.W.0021.210328T1243Z-210328T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
843 AM EDT Sun Mar 28 2021

The National Weather Service in Morristown has issued a

* Flash Flood Warning for...
  Greene County in east Tennessee...
  Southeastern Hawkins County in east Tennessee...
  Unicoi County in east Tennessee...
  Washington County in east Tennessee...

* Until 1245 PM EDT.

* At 843 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Johnson City, Kingsport, Greeneville, Erwin, Jonesborough, 
  Tusculum, Midway, Banner Hill, Gray, Spurgeon, Oak Grove, Unicoi, 
  Mosheim, Bulls Gap, Watauga, Baileyton, Chucky, Davy Crockett 
  Birthplace, Limestone and Camp Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3630 8314 3634 8283 3644 8266 3645 8242
      3642 8237 3639 8239 3639 8230 3625 8234
      3623 8226 3616 8222 3611 8237 3595 8256
      3597 8261 3604 8259 3605 8267 3600 8278
      3592 8282 3594 8290 3616 8317 3624 8308

FLASH FLOOD...RADAR INDICATED

$$

GC

478 
WGUS74 KMRX 281638
FFSMRX

Flash Flood Statement
National Weather Service Morristown TN
1238 PM EDT Sun Mar 28 2021

TNC059-073-171-179-281648-
/O.CAN.KMRX.FF.W.0021.000000T0000Z-210328T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene TN-Hawkins TN-Unicoi TN-Washington TN-
1238 PM EDT Sun Mar 28 2021

...FLASH FLOOD WARNING FOR GREENE, SOUTHEASTERN HAWKINS, UNICOI AND 
WASHINGTON COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

Flood waters will continue to impact low lying areas and several 
roadways into the afternoon.

LAT...LON 3630 8314 3634 8283 3644 8266 3645 8242
      3642 8237 3639 8239 3639 8230 3625 8234
      3623 8226 3616 8222 3611 8237 3595 8256
      3597 8261 3604 8259 3605 8267 3600 8278
      3592 8282 3594 8290 3616 8317 3624 8308

$$

GC

Flash Flood Warnings in Tennessee, 2021Every flash flood warning in 2021

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.