Alert archive / Arkansas / Flash Flood Warnings in 2021

Flash Flood Warning 66, NWS Jackson, MS

July 19, 2021Chicot County, Arkansas; Washington County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 19, 2021, 4:15 AM CDT for Chicot County, Arkansas; Washington 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: Jul 19, 2021, 4:15 AM CDT (09:15 UTC)
Expired: Jul 19, 2021, 7:15 AM CDT
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Chicot County, AR, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 144 km from the middle of the area, began a volume at 09:17 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 00:00Z, 9.3 hours before the alert went out and 134 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: 344 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

293 
WGUS54 KJAN 190915
FFWJAN
ARC017-MSC151-191215-
/O.NEW.KJAN.FF.W.0066.210719T0915Z-210719T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
415 AM CDT Mon Jul 19 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Central Chicot County in southeastern Arkansas...
  Southern Washington County in northwestern Mississippi...

* Until 715 AM CDT.

* At 415 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 3.5 inches of 
  rain have fallen. Additional rainfall amounts of 1 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...
  Greenville, Hollandale, Lake Village, Dermott, Avon, Wayside, 
  Chicot Junction, Mcmillan Corner, Estill, Darlove, Murphy and 
  Arcola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3356 9145 3336 9107 3319 9068 3312 9070
      3310 9068 3310 9091 3301 9092 3301 9095
      3327 9146

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

DL

2 follow-up statements

493 
WGUS74 KJAN 191056
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
556 AM CDT Mon Jul 19 2021

ARC017-MSC151-191215-
/O.CON.KJAN.FF.W.0066.000000T0000Z-210719T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chicot AR-Washington MS-
556 AM CDT Mon Jul 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM CDT THIS 
MORNING FOR CENTRAL CHICOT AND SOUTHERN WASHINGTON COUNTIES...

At 556 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. Additional rainfall amounts up to 2 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...
  Greenville, Hollandale, Lake Village, Dermott, Avon, Wayside, 
  Chicot Junction, Mcmillan Corner, Estill, Darlove, Murphy and 
  Arcola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3356 9145 3336 9107 3319 9068 3312 9070
      3310 9068 3310 9091 3301 9092 3301 9095
      3327 9146

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

DL

789 
WGUS74 KJAN 191212
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
712 AM CDT Mon Jul 19 2021

ARC017-MSC151-191222-
/O.EXP.KJAN.FF.W.0066.000000T0000Z-210719T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chicot AR-Washington MS-
712 AM CDT Mon Jul 19 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 715 AM CDT THIS MORNING FOR 
CENTRAL CHICOT AND SOUTHERN WASHINGTON COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to using caution with any standing water 
that remains on area roads.

LAT...LON 3356 9145 3336 9107 3319 9068 3312 9070
      3310 9068 3310 9091 3301 9092 3301 9095
      3327 9146

$$

DL

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 7:56 PM CDT	Special Weather Statement	JAN	Simpson	49 min
Jul 19, 3:18 AM CDT	Special Weather Statement	JAN	Sharkey	57 min
Jul 19, 4:01 AM CDT	Special Weather Statement	JAN	Yazoo	59 min
Jul 19, 4:44 AM CDT	Special Weather Statement	JAN	Lauderdale	61 min
Jul 19, 5:07 AM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale, Neshoba, Newton	3 hr
Jul 19, 7:15 AM CDT	Special Weather Statement	JAN	Lauderdale	45 min
Jul 19, 9:00 AM CDT	Flash Flood Warning	JAN	Scott	2 hr
Jul 19, 9:30 AM CDT	River Flood Warning	JAN	Leake	4 days
Jul 19, 9:53 AM CDT	River Flood Warning	JAN	Clarke	4 days
Jul 19, 2:49 PM CDT	Special Weather Statement	JAN	Lincoln	26 min

Nearby

Flash Flood Warnings in Arkansas, 2021 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.