Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 17, NWS Memphis, TN

March 25, 2021Itawamba County, Tishomingo County, Mississippi

NWS Memphis, TN issued this flash flood warning at Mar 25, 2021, 2:35 PM CDT for Itawamba County, Tishomingo County, Mississippi. 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: Mar 25, 2021, 2:35 PM CDT (19:35 UTC)
Expired: Mar 25, 2021, 5:19 PM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

Counties Itawamba County, MS, Tishomingo County, MS

The radar

The Columbus AFB radar (KGWX), 60 km from the middle of the area, began a volume at 19:37 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

Little Rock, AR (KLZK), launched 12:00Z, 7.6 hours before the alert went out and 161 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: 539 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 336 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

040 
WGUS54 KMEG 251935
FFWMEG
MSC057-141-260030-
/O.NEW.KMEG.FF.W.0017.210325T1935Z-210326T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
235 PM CDT Thu Mar 25 2021

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Northern Itawamba County in northeastern Mississippi...
  Southeastern Tishomingo County in northeastern Mississippi...

* Until 730 PM CDT.

* At 235 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Fulton, Belmont, Mantachie, Fairview, Sandy Springs, Golden, 
  Moores Mill, Eastman, Abney and Dorsey.

Additional rainfall amounts of 1 to 3 inches are likely in the 
warned area over the next couple of hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 3450 8833 3457 8819 3457 8814 3450 8815
      3446 8816 3444 8816 3442 8816 3440 8816
      3439 8816 3438 8817 3436 8817 3417 8853
      3439 8853 3446 8839 3446 8833

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 3 HOURS 

$$

TLSJr

1 follow-up statement

496 
WGUS74 KMEG 252219
FFSMEG

Flash Flood Statement
National Weather Service Memphis TN
519 PM CDT Thu Mar 25 2021

MSC057-141-252229-
/O.CAN.KMEG.FF.W.0017.000000T0000Z-210326T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Itawamba MS-Tishomingo MS-
519 PM CDT Thu Mar 25 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN ITAWAMBA AND 
SOUTHEASTERN TISHOMINGO COUNTIES...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3450 8833 3457 8819 3457 8814 3450 8815
      3446 8816 3444 8816 3442 8816 3440 8816
      3439 8816 3438 8817 3436 8817 3417 8853
      3439 8853 3446 8839 3446 8833

$$

TLSJr

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 25, 4:57 AM CDT	Special Weather Statement	MEG	Monroe	33 min
Mar 25, 5:06 AM CDT	Areal Flood Advisory	MEG	DeSoto	3 hr
Mar 25, 6:00 AM CDT	Areal Flood Advisory	MEG	DeSoto, Tate, Tunica	3 hr
Mar 25, 6:01 AM CDT	Areal Flood Advisory	MEG	DeSoto, Marshall	3 hr
Mar 25, 12:41 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Pontotoc	34 min
Mar 25, 1:32 PM CDT	River Flood Warning	MEG	Lafayette, Marshall, Union	23 hr
Mar 25, 2:04 PM CDT	Special Weather Statement	MEG	Monroe	26 min
Mar 25, 2:25 PM CDT	Special Weather Statement	MEG	Itawamba	35 min
Mar 25, 2:42 PM CDT	Special Weather Statement	MEG	Itawamba	33 min
Mar 25, 3:06 PM CDT	Special Weather Statement	MEG	Itawamba	24 min
Mar 25, 3:14 PM CDT	Tornado Warning	MEG	Itawamba, Tishomingo	21 min
Mar 25, 3:23 PM CDT	Tornado Warning	MEG	Itawamba, Tishomingo	13 min
Mar 25, 5:20 PM CDT	Special Weather Statement	MEG	Marshall	25 min
Mar 25, 5:26 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Marshall	34 min
Mar 25, 5:56 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Tippah	49 min
Mar 25, 6:45 PM CDT	Special Weather Statement	MEG	Alcorn	30 min

Nearby

Flash Flood Warnings in Mississippi, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.