Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 38, NWS Memphis, TN

March 31, 2021Monroe County, Mississippi

NWS Memphis, TN issued this flash flood warning at Mar 31, 2021, 5:32 AM CDT for Monroe County, Mississippi. It was in force for 3 hr. 2 reports 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: Mar 31, 2021, 5:32 AM CDT (10:32 UTC)
Expired: Mar 31, 2021, 9:00 AM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

County Monroe County, MS

The radar

The Columbus AFB radar (KGWX), 20 km from the middle of the area, began a volume at 10:34 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
Mar 31, 6:28 AM CDT	FLASH FLOOD	Hatley, MS	SHERIFF REPORTS MULTIPLE ROADS CLOSED IN AND AROUND HATLEY DUE TO HEAVY RAINFALL.
Mar 31, 8:04 AM CDT	FLASH FLOOD	5 Sse New Wren, MS	ADAMS ROAD IS COMPLETELY UNDERWATER AND IMPASSABLE DUE TO FLOODWATERS.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 10.5 hours before the alert went out and 167 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: 127 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1179 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

837 
WGUS54 KMEG 311032
FFWMEG
MSC095-311230-
/O.NEW.KMEG.FF.W.0038.210331T1032Z-210331T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
532 AM CDT Wed Mar 31 2021

The National Weather Service in Memphis has issued a

* Flash Flood Warning for...
  Monroe County in northeastern Mississippi...

* Until 730 AM CDT.

* At 532 AM 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...
  Amory, Aberdeen, Smithville, New Wren, Prairie, Nettleton, Hatley, 
  Gattman, Becker, East Aberdeen, Quincy, Bigbee, Wren, Wise Gap, 
  New Hamilton, Greenwood Springs, Athens, Binford, Parham and 
  Splunge.

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 3409 8872 3409 8820 3374 8825 3375 8832
      3372 8833 3369 8837 3369 8838 3369 8840
      3368 8840 3368 8842 3367 8842 3367 8843
      3365 8846 3365 8850 3365 8851 3367 8850
      3367 8849 3368 8850 3368 8872

FLASH FLOOD...RADAR INDICATED

$$

SGW

2 follow-up statements

634 
WGUS54 KMEG 311152 RRA
FFWMEG
MSC095-311315-
/O.EXT.KMEG.FF.W.0038.000000T0000Z-210331T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
652 AM CDT Wed Mar 31 2021

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Monroe County in northeastern Mississippi...

* Until 815 AM CDT.

* At 652 AM 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...
  Amory, Aberdeen, Smithville, New Wren, Prairie, Nettleton, Hatley, 
  Gattman, Becker, East Aberdeen, Quincy, Bigbee, Wren, Wise Gap, 
  New Hamilton, Greenwood Springs, Athens, Binford, Parham and 
  Splunge.

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 3409 8872 3409 8820 3374 8825 3375 8832
      3372 8833 3369 8837 3369 8838 3369 8840
      3368 8840 3368 8842 3367 8842 3367 8843
      3365 8846 3365 8850 3365 8851 3367 8850
      3367 8849 3368 8850 3368 8872

FLASH FLOOD...RADAR INDICATED

$$

SGW

236 
WGUS54 KMEG 311305
FFWMEG
MSC095-311400-
/O.EXT.KMEG.FF.W.0038.000000T0000Z-210331T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
805 AM CDT Wed Mar 31 2021

The National Weather Service in Memphis has extended the

* Flash Flood Warning for...
  Monroe County in northeastern Mississippi...

* Until 900 AM CDT.

* At 805 AM 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...
  Amory, Aberdeen, Smithville, New Wren, Prairie, Nettleton, Hatley, 
  Gattman, Becker, East Aberdeen, Quincy, Bigbee, Wren, Wise Gap, 
  New Hamilton, Greenwood Springs, Athens, Binford, Parham and 
  Splunge.

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 3409 8872 3409 8820 3374 8825 3375 8832
      3372 8833 3369 8837 3369 8838 3369 8840
      3368 8840 3368 8842 3367 8842 3367 8843
      3365 8846 3365 8850 3365 8851 3367 8850
      3367 8849 3368 8850 3368 8872

FLASH FLOOD...RADAR INDICATED

$$

SGW

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 7:50 PM CDT	Areal Flood Advisory	MEG	DeSoto, Tunica	3 hr
Mar 30, 7:56 PM CDT	Flash Flood Warning	MEG	DeSoto	3 hr
Mar 30, 9:30 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Marshall	45 min
Mar 30, 9:54 PM CDT	Flash Flood Warning	MEG	Benton, DeSoto, Marshall, Tate, Tunica	3 hr
Mar 30, 11:40 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw	50 min
Mar 31, 12:17 AM CDT	Tornado Warning	MEG	Calhoun, Chickasaw	28 min
Mar 31, 12:27 AM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Monroe, Pontotoc, Yalobusha	3 hr
Mar 31, 12:41 AM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Lee, Monroe	49 min
Mar 31, 12:52 AM CDT	Tornado Warning	MEG	Chickasaw, Lee, Monroe	10 min
Mar 31, 1:01 AM CDT	Severe Thunderstorm Warning	MEG	Monroe	14 min
Mar 31, 1:24 AM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Monroe	51 min
Mar 31, 1:53 AM CDT	Tornado Warning	MEG	Monroe	22 min
Mar 31, 2:24 AM CDT	Flash Flood Warning	MEG	Monroe	3 hr
Mar 31, 3:16 AM CDT	Special Weather Statement	MEG	Coahoma	29 min
Mar 31, 3:26 AM CDT	Special Weather Statement	MEG	Panola	34 min
Mar 31, 3:46 AM CDT	Areal Flood Warning	MEG	Chickasaw	108 min
Mar 31, 3:49 AM CDT	Severe Thunderstorm Warning	MEG	Lafayette, Marshall, Panola	41 min
Mar 31, 4:12 AM CDT	Special Weather Statement	MEG	Yalobusha	33 min
Mar 31, 4:30 AM CDT	Special Weather Statement	MEG	Union	45 min
Mar 31, 4:43 AM CDT	Special Weather Statement	MEG	Calhoun, Pontotoc	32 min
Mar 31, 5:02 AM CDT	Special Weather Statement	MEG	Tallahatchie	13 min
Mar 31, 5:05 AM CDT	Special Weather Statement	MEG	Lee	25 min
Mar 31, 5:17 AM CDT	Special Weather Statement	MEG	Chickasaw	28 min
Mar 31, 5:19 AM CDT	Special Weather Statement	MEG	Chickasaw	26 min
Mar 31, 5:20 AM CDT	Flash Flood Warning	MEG	Calhoun, Chickasaw, Yalobusha	3 hr
Mar 31, 5:26 AM CDT	Flash Flood Warning	MEG	Chickasaw	4 hr
Mar 31, 5:31 AM CDT	Freeze Watch	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	9 hr
Mar 31, 5:31 AM CDT	Freeze Warning	MEG	Alcorn, Benton, DeSoto, Lafayette, Marshall, Panola and 7 more	27 hr
Mar 31, 5:33 AM CDT	Special Weather Statement	MEG	Itawamba, Lee	42 min
Mar 31, 5:44 AM CDT	Special Weather Statement	MEG	Monroe	31 min
Mar 31, 6:06 AM CDT	Special Weather Statement	MEG	Monroe	39 min
Mar 31, 8:28 AM CDT	Areal Flood Warning	MEG	Alcorn, Tishomingo	3 hr
Mar 31, 8:54 AM CDT	Areal Flood Warning	MEG	Calhoun, Chickasaw, Yalobusha	3 hr
Mar 31, 9:01 AM CDT	Areal Flood Warning	MEG	Chickasaw, Itawamba, Lee, Monroe	3 hr
Mar 31, 9:01 AM CDT	Areal Flood Warning	MEG	Chickasaw	14 min
Mar 31, 9:05 AM CDT	River Flood Warning	MEG	Calhoun	23 hr
Mar 31, 9:19 AM CDT	River Flood Warning	MEG	Lafayette, Marshall, Union	22 hr
Mar 31, 9:19 AM CDT	River Flood Warning	MEG	Tate, Tunica	19 hr
Mar 31, 9:19 AM CDT	River Flood Warning	MEG	Quitman	4 days
Mar 31, 9:20 AM CDT	Areal Flood Warning	MEG	Chickasaw, Monroe	3 hr
Mar 31, 2:34 PM CDT	Frost Advisory	MEG	Calhoun, Chickasaw, Coahoma, Itawamba, Lee, Monroe and 3 more	18 hr
Mar 31, 2:34 PM CDT	Freeze Warning	MEG	Alcorn, Benton, Calhoun, Chickasaw, Coahoma, DeSoto and 16 more	42 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.