Alert archive / Tennessee / Flash Flood Warnings in 2023

Flash Flood Warning 46, NWS Memphis, TN

August 3, 20235 counties in Tennessee

NWS Memphis, TN issued this flash flood warning at Aug 3, 2023, 9:38 AM CDT for 5 counties in 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: Aug 3, 2023, 9:38 AM CDT (14:38 UTC)
Expired: Aug 3, 2023, 12:45 PM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Carroll County, TN, Gibson County, TN, Henry County, TN, Obion County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 98 km from the middle of the area, began a volume at 14:39 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 (KLZK), launched 12:00Z, 2.6 hours before the alert went out and 188 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: 2036 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1562 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 182 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 Aug 3, 6:59 AM CDT, 2 hours 39 minutes earlier.

Area forecast discussion, Aug 3, 6:59 AM CDT, 2 hours 39 minutes before

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In the hours before

Special weather statement, Aug 3, 5:45 AM CDT, 3 hours 53 minutes before

Special Weather Statement
National Weather Service Memphis TN
545 AM CDT Thu Aug 3 2023

MOZ115-TNZ001>003-019-020-031145-
Pemiscot MO-Weakley TN-Lake TN-Obion TN-Dyer TN-Gibson TN-
545 AM CDT Thu Aug 3 2023

...Strong thunderstorms will impact portions of central Pemiscot,
northwestern Weakley, northern Dyer, northwestern Gibson, Obion and
Lake Counties through 645 AM CDT...

At 544 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Towosahgy State Historic Site to near
Parma. Movement was southeast at 40 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Martin, Union City, Caruthersville, Portageville, Hayti, Fulton,
Reelfoot Lake State Park, Tiptonville, Newbern, Dresden, South
Fulton, Greenfield, Ridgely, Troy, Kenton, Obion, Sharon, Hayti
Heights, Wardell and Clayton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3650 8874 3619 8867 3605 8978 3639 8990
      3639 8975 3643 8973 3640 8967 3641 8961
      3634 8954 3637 8951 3643 8955 3646 8952
      3650 8953 3650 8949 3647 8949 3646 8947
      3650 8942 3651 8930
TIME...MOT...LOC 1044Z 320DEG 34KT 3674 8915 3666 8976

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

SJM

Special weather statement, Aug 3, 6:39 AM CDT, 2 hours 59 minutes before

Special Weather Statement
National Weather Service Memphis TN
639 AM CDT Thu Aug 3 2023

TNZ002>004-019>021-051-031215-
Carroll TN-Weakley TN-Crockett TN-Obion TN-Henry TN-Dyer TN-
Gibson TN-
639 AM CDT Thu Aug 3 2023

...Strong thunderstorms will impact portions of Crockett, Weakley,
eastern Dyer, Gibson, southeastern Obion, western Carroll and
southwestern Henry Counties through 715 AM CDT...

At 639 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Latham to Kenton to near Miston. Movement
was southeast at 50 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Dyersburg, Martin, Humboldt, Milan, McKenzie, Trenton, Huntingdon,
Newbern, Dresden, Alamo, Dyer, Greenfield, Gleason, Kenton,
Rutherford, Bradford, Sharon, Atwood, Cottage Grove and Bradleytown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3616 8818 3583 8862 3579 8882 3580 8891
      3578 8890 3573 8916 3575 8924 3616 8954
      3625 8901 3650 8872 3650 8861
TIME...MOT...LOC 1139Z 321DEG 43KT 3646 8870 3623 8901 3615 8943

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

CJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 1:55 PM CDT	Special Weather Statement	MEG	Monroe	50 min
Aug 3, 3:09 PM CDT	Excessive Heat Warning	MEG	Coahoma, Quitman, Tallahatchie, Tunica	24 hr
Aug 3, 3:09 PM CDT	Heat Advisory	MEG	Benton, Calhoun, Chickasaw, DeSoto, Lafayette, Lee and 7 more	29 hr
Aug 3, 5:45 AM CDT	Special Weather Statement	MEG	Lake, Obion, Weakley	60 min
Aug 3, 5:57 AM CDT	Severe Thunderstorm Warning	MEG	Dyer, Gibson, Lake, Obion, Weakley	48 min
Aug 3, 6:39 AM CDT	Special Weather Statement	MEG	Carroll, Crockett, Dyer, Gibson, Weakley	36 min

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.