Alert archive / Tennessee / Flash Flood Warnings in 2017
Flash Flood Warning 21, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at May 11, 2017, 8:25 PM CDT for Crockett County, Dyer County, Lauderdale 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
- May 11, 2017, 8:25 PM CDT (01:25 UTC)
- Expired
- May 11, 2017, 11:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Crockett County, TN, Dyer County, TN, Lauderdale County, TN
The radar
The Memphis radar (KNQA), 72 km from the middle of the area, began a volume at 01:28 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.
The nearest sounding before it
Little Rock, AR (KBYH), launched 00:00Z, 1.4 hours before the alert went out and 125 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
- 976 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.6
The text
As transmitted.
476
WGUS54 KMEG 120125
FFWMEG
TNC033-045-097-120430-
/O.NEW.KMEG.FF.W.0021.170512T0125Z-170512T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
825 PM CDT THU MAY 11 2017
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
Northwestern Crockett County in western Tennessee...
Southeastern Dyer County in western Tennessee...
Northeastern Lauderdale County in western Tennessee...
* Until 1130 PM CDT
* At 825 PM CDT...Doppler Radar estimates 1 to 3 inches of rain has
occurred over the past hour. Showers and thunderstorms will produce
an additional 1 to 3 inches of rain over the next 2 hours.
* Some locations that will experience flooding include...
Halls, Chestnut Bluff, Unionville, Friendship, Gates, South Fork,
Poplar Grove, Hawkinsville, Porter Gap, Edith, Fowlkes, Dryhill,
Parker, Curve, Dog Hill, Bonicord, Double Bridges, Frog Jump,
Nankipoo and Maury Junction.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 3585 8918 3581 8935 3582 8936 3582 8940
3580 8942 3579 8945 3589 8965 3592 8965
3602 8925
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 7:13 PM CDT | Severe Thunderstorm Warning | MEG | Lauderdale | 32 min |
| May 11, 8:01 PM CDT | Severe Thunderstorm Warning | MEG | Crockett, Dyer, Lauderdale | 29 min |
Nearby
Flash Flood Warnings in Tennessee, 2017Every flash flood warning in 2017
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.