Alert archive / Tennessee / Flash Flood Warnings in 2023

Flash Flood Warning 36, NWS Memphis, TN

July 19, 2023Henry County, Weakley County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jul 19, 2023, 2:33 AM CDT for Henry County, Weakley 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 counties it named.

The facts

Issued: Jul 19, 2023, 2:33 AM CDT (07:33 UTC)
Expired: Jul 19, 2023, 5:45 AM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Henry County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 87 km from the middle of the area, began a volume at 07:37 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, 7.6 hours before the alert went out and 173 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1366 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this flash flood warning went out at Jul 18, 11:51 PM CDT, 2 hours 42 minutes earlier.

Area forecast discussion, Jul 18, 11:51 PM CDT, 2 hours 42 minutes before

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In the hours before

Local storm report, Jul 18, 9:12 PM CDT, 5 hours 21 minutes before

Preliminary Local Storm Report
National Weather Service Memphis TN
912 PM CDT Tue Jul 18 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0706 PM     Tstm Wnd Dmg     Blue Mountain           34.67N 89.03W
07/18/2023                   Tippah             MS   Broadcast Media

            Large tree uprooted in Blue Mountain. Time
            is radar estimated.

&&

Local storm report, Jul 18, 9:32 PM CDT, 5 hours 1 minute before

Preliminary Local Storm Report
National Weather Service Memphis TN
932 PM CDT Tue Jul 18 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0608 PM     Tstm Wnd Dmg     2 SE Southeast Memphis  35.05N 89.86W
07/18/2023                   Shelby             TN   Utility Company

            Eleven power poles and associated power
            lines were downed along Winchester Blvd.

&&

Local storm report, Jul 18, 9:37 PM CDT, 4 hours 56 minutes before

Preliminary Local Storm Report
National Weather Service Memphis TN
937 PM CDT Tue Jul 18 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0739 PM     Tstm Wnd Dmg     2 SW Marietta           34.48N 88.49W
07/18/2023                   Prentiss           MS   Storm Chaser

            Trees and power lines down on CR 5491 near
            Marietta, MS.

&&

Special weather statement, Jul 19, 1:43 AM CDT, 50 minutes before

Special Weather Statement
National Weather Service Memphis TN
143 AM CDT Wed Jul 19 2023

TNZ003-004-190715-
Weakley TN-Henry TN-
143 AM CDT Wed Jul 19 2023

...A strong thunderstorm will impact portions of northeastern Weakley
and northwestern Henry Counties through 215 AM CDT...

At 143 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lynnville, or 11 miles east of Fulton, moving southeast at 10 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Latham, Palmersville and Brundige.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3647 8840 3636 8869 3650 8880 3650 8845
TIME...MOT...LOC 0643Z 319DEG 9KT 3652 8867

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

PWB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 7:06 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Itawamba, Lee, Monroe, Pontotoc and 4 more	39 min
Jul 18, 7:37 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Monroe, Pontotoc, Prentiss, Tishomingo and 1 more	38 min
Jul 18, 8:16 PM CDT	Special Weather Statement	MEG	Monroe	29 min
Jul 19, 12:34 PM CDT	Special Weather Statement	MEG	Itawamba	26 min
Jul 19, 2:26 PM CDT	Heat Advisory	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	30 hr
Jul 19, 1:43 AM CDT	Special Weather Statement	MEG	Weakley	32 min
Jul 19, 1:54 AM CDT	Severe Thunderstorm Warning	MEG	Henry, Weakley	66 min
Jul 19, 2:59 AM CDT	Severe Thunderstorm Warning	MEG	Benton, Henry	61 min
Jul 19, 3:27 AM CDT	Severe Thunderstorm Warning	MEG	Henry, Weakley	48 min
Jul 19, 3:56 AM CDT	Severe Thunderstorm Warning Considerable damage threat	MEG	Benton, Henry	49 min
Jul 19, 4:17 AM CDT	Areal Flood Advisory	MEG	Benton, Henry	4 hr
Jul 19, 4:32 AM CDT	Special Weather Statement	MEG	Benton	13 min
Jul 19, 4:45 AM CDT	Special Weather Statement	MEG	Benton	15 min
Jul 19, 4:51 AM CDT	Special Weather Statement	MEG	Henry	24 min
Jul 19, 5:13 AM CDT	Special Weather Statement	MEG	Benton, Henry	32 min
Jul 19, 5:45 AM CDT	Areal Flood Advisory	MEG	Henry, Weakley	2 hr
Jul 19, 5:47 AM CDT	Special Weather Statement	MEG	Benton	28 min
Jul 19, 6:49 AM CDT	Special Weather Statement	MEG	Henry	41 min
Jul 19, 7:30 AM CDT	Flash Flood Warning	MEG	Benton, Henry	3 hr
Jul 19, 8:17 AM CDT	Special Weather Statement	MEG	Weakley	28 min
Jul 19, 8:55 AM CDT	Special Weather Statement	MEG	Weakley	35 min
Jul 19, 9:00 AM CDT	Flash Flood Warning	MEG	Henry, Weakley	3 hr
Jul 19, 9:30 AM CDT	Special Weather Statement	MEG	Weakley	30 min
Jul 19, 10:24 AM CDT	Flash Flood Warning	MEG	Benton, Henry	3 hr
Jul 19, 11:50 AM CDT	Flash Flood Warning	MEG	Henry, Weakley	68 min
Jul 19, 2:40 PM CDT	Flood Watch	MEG	Benton, Carroll, Henry, Obion, Weakley	24 hr

Nearby

Flash Flood Warnings in Tennessee, 2023 Every flash flood warning in 2023

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.