Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 55, NWS Memphis, TN

June 9, 20216 counties in Mississippi; 4 counties in Arkansas; Shelby County, Tennessee

NWS Memphis, TN issued this flash flood warning at Jun 9, 2021, 6:50 AM CDT for 6 counties in Mississippi; 4 counties in Arkansas; Shelby County, Tennessee. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 9, 2021, 6:50 AM CDT (11:50 UTC)
Expired: Jun 9, 2021, 10:00 AM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Crittenden County, AR, Lee County, AR, Phillips County, AR, St. Francis County, AR, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Tate County, MS, Tunica County, MS, Shelby County, TN

The radar

The Memphis radar (KNQA), 77 km from the middle of the area, began a volume at 11:54 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 8:10 AM CDT	FLASH FLOOD	4 S Forrest City, AR	HIGHWAY 1 CLOSED AT THE INTERSECTION OF HIGHWAY 1B SOUTH OF FORREST CITY.

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 11.8 hours before the alert went out and 40 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: 69 J/kg
Mixed-layer CIN: -185 J/kg
Mixed-layer LCL: 917 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

921 
WGUS54 KMEG 091150
FFWMEG
ARC035-077-107-123-MSC033-071-093-107-137-143-TNC157-091500-
/O.NEW.KMEG.FF.W.0055.210609T1150Z-210609T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
650 AM CDT Wed Jun 9 2021

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Southwestern Crittenden County in eastern Arkansas...
  Lee County in eastern Arkansas...
  Northern Phillips County in eastern Arkansas...
  Southern St. Francis County in eastern Arkansas...
  DeSoto County in northwestern Mississippi...
  Northern Lafayette County in northwestern Mississippi...
  Marshall County in northwestern Mississippi...
  Northern Panola County in northwestern Mississippi...
  Tate County in northwestern Mississippi...
  Tunica County in northwestern Mississippi...
  Shelby County in western Tennessee...

* Until 1000 AM CDT.

* At 650 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 2 to 3 inches are 
  possible in 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...
  Southaven, Olive Branch, Horn Lake, Forrest City, Hernando, 
  Senatobia, Holly Springs, Marianna, Hughes, Marvell, Palestine, St 
  Francis National Park, Helena-West Helena, Wall Doxey State Park, 
  Coldwater, Byhalia, Walls, Tunica, Wheatley and Horseshoe Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3499 9115 3499 8937 3486 8936 3484 8931
      3450 8929 3453 8954 3452 9105 3473 9105
      3474 9110 3487 9110 3491 9115

FLASH FLOOD...RADAR INDICATED

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 7:08 PM CDT	Special Weather Statement	MEG	Chickasaw, Lee, Monroe	37 min
Jun 8, 7:12 PM CDT	Areal Flood Advisory	MEG	Calhoun, Chickasaw, Pontotoc	3 hr
Jun 8, 7:47 PM CDT	Special Weather Statement	MEG	Itawamba, Monroe	28 min
Jun 8, 8:15 PM CDT	Special Weather Statement	MEG	Itawamba	30 min
Jun 8, 9:20 PM CDT	Areal Flood Advisory	MEG	DeSoto, Tunica	3 hr
Jun 8, 10:58 PM CDT	Flash Flood Warning	MEG	Coahoma, Panola, Quitman, Tallahatchie, Tunica	11 hr
Jun 8, 11:00 PM CDT	Flash Flood Warning	MEG	Calhoun, Lafayette, Pontotoc, Union, Yalobusha	11 hr
Jun 8, 11:05 PM CDT	Flash Flood Warning	MEG	Benton, Marshall, Tate, Tippah	3 hr
Jun 9, 1:28 AM CDT	Areal Flood Warning	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 3 more	38 min
Jun 9, 1:53 AM CDT	Areal Flood Advisory	MEG	DeSoto, Marshall, Tate, Tunica	4 hr
Jun 9, 2:04 AM CDT	Areal Flood Advisory	MEG	Benton, Lafayette, Marshall, Tate, Tippah, Union	4 hr
Jun 9, 2:06 AM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 2 more	7 hr
Jun 9, 5:00 AM CDT	River Flood Warning	MEG	Lee	21 days
Jun 9, 5:06 AM CDT	River Flood Warning	MEG	Calhoun	15 hr
Jun 9, 5:11 AM CDT	Areal Flood Warning	MEG	Benton, Coahoma, DeSoto, Lafayette, Marshall, Panola and 2 more	99 min
Jun 9, 5:22 AM CDT	River Flood Warning	MEG	Tate, Tunica	44 hr
Jun 9, 5:37 AM CDT	River Flood Warning	MEG	Calhoun	13 hr
Jun 9, 6:56 AM CDT	Areal Flood Advisory	MEG	Alcorn, Benton, Marshall, Prentiss, Tippah, Union	3 hr
Jun 9, 7:44 AM CDT	Areal Flood Advisory	MEG	Alcorn, Lee, Prentiss, Tishomingo	2 hr
Jun 9, 8:58 AM CDT	Flash Flood Warning	MEG	Lafayette, Lee, Pontotoc, Union	5 hr
Jun 9, 9:21 AM CDT	Flash Flood Warning	MEG	Coahoma, DeSoto, Panola, Quitman, Tate, Tunica	3 hr
Jun 9, 11:04 AM CDT	Areal Flood Advisory	MEG	Lafayette, Marshall	3 hr
Jun 9, 11:08 AM CDT	Special Weather Statement	MEG	Union	37 min
Jun 9, 11:53 AM CDT	Special Weather Statement	MEG	Lee	37 min
Jun 9, 12:12 PM CDT	Flash Flood Warning Considerable damage threat	MEG	Coahoma, Panola, Quitman, Tallahatchie, Tate, Tunica and 1 more	3 hr
Jun 9, 12:39 PM CDT	Special Weather Statement	MEG	Calhoun	36 min
Jun 9, 1:27 PM CDT	Special Weather Statement	MEG	Chickasaw	33 min
Jun 9, 2:03 PM CDT	Areal Flood Advisory	MEG	Calhoun, Lafayette, Lee, Pontotoc, Union, Yalobusha	3 hr
Jun 9, 2:14 PM CDT	Special Weather Statement	MEG	Monroe	31 min
Jun 9, 3:04 PM CDT	Flash Flood Warning	MEG	Lafayette	9 min
Jun 9, 3:10 PM CDT	Areal Flood Advisory	MEG	Coahoma, Panola, Quitman, Tallahatchie, Tate, Tunica and 1 more	3 hr
Jun 9, 3:15 PM CDT	Flash Flood Warning	MEG	Lafayette	6 hr
Jun 9, 5:50 AM CDT	Areal Flood Advisory	MEG	Crittenden	2 hr
Jun 8, 10:03 PM CDT	Areal Flood Advisory	MEG	Shelby	3 hr

Nearby

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

Sources

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.