Alert archive / Mississippi / Flash Flood Watches in 2023

Flash Flood Watch 2, NWS Memphis, TN

May 11, 20237 counties in Mississippi

NWS Memphis, TN issued this flash flood watch at May 11, 2023, 9:42 AM CDT for 7 counties in Mississippi. It was in force for 26 days.

The area

The counties it named.

The facts

Issued: May 11, 2023, 9:42 AM CDT (14:42 UTC)
Expired: Jun 6, 2023, 3:06 PM CDT
In force: 26 days
Issued by: NWS Memphis, TN
Flood severity: None

Counties Coahoma County, MS, DeSoto County, MS, Panola County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS

The radar

The Memphis radar (KNQA), 106 km from the middle of the area, began a volume at 14:42 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

Jackson, MS (KJAN), launched 12:00Z, 2.7 hours before the alert went out and 234 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: 522 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 watch went out at May 11, 6:48 AM CDT, 2 hours 54 minutes earlier.

Area forecast discussion, May 11, 6:48 AM CDT, 2 hours 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 2:05 PM CDT	Special Weather Statement	MEG	Coahoma	25 min
May 11, 2:31 PM CDT	Special Weather Statement	MEG	Quitman	29 min
May 11, 2:59 PM CDT	Special Weather Statement	MEG	Quitman, Tunica	31 min
May 11, 3:19 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Tate, Tunica	26 min
May 11, 3:42 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Tate, Tunica	48 min
May 11, 3:51 PM CDT	Special Weather Statement	MEG	Calhoun, Yalobusha	24 min
May 11, 4:17 PM CDT	Special Weather Statement	MEG	Calhoun, Chickasaw, Lafayette	28 min
May 11, 4:47 PM CDT	Special Weather Statement	MEG	Chickasaw, Lafayette, Pontotoc	28 min
May 11, 5:03 PM CDT	Special Weather Statement	MEG	Lee, Monroe	42 min
May 11, 5:08 PM CDT	Special Weather Statement	MEG	Marshall, Pontotoc, Union	37 min
May 11, 5:37 PM CDT	Special Weather Statement	MEG	Benton, Marshall, Tippah	38 min
May 11, 5:39 PM CDT	Special Weather Statement	MEG	Alcorn, Itawamba, Lee, Prentiss	36 min
May 11, 6:13 PM CDT	Special Weather Statement	MEG	Alcorn, Prentiss, Tishomingo	47 min
May 11, 6:43 PM CDT	Special Weather Statement	MEG	Tishomingo	47 min
May 11, 4:21 PM CDT	Severe Thunderstorm Warning	MEG	Shelby, Tipton	39 min
May 11, 4:58 PM CDT	Special Weather Statement	MEG	Tipton	32 min
May 11, 5:23 PM CDT	Special Weather Statement	MEG	Lauderdale	37 min
May 11, 6:16 PM CDT	Special Weather Statement	MEG	Fayette, Hardeman	44 min
May 11, 2:56 PM CDT	Special Weather Statement	MEG	Cross	34 min
May 11, 3:26 PM CDT	Special Weather Statement	MEG	Poinsett	34 min
May 11, 3:57 PM CDT	Special Weather Statement	MEG	Craighead	33 min

Nearby

Flash Flood Watches in Mississippi, 2023 Every flash flood watch 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.