Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 11, NWS Jackson, MS

April 9, 2021Rankin County, Scott County, Smith County, Mississippi

NWS Jackson, MS issued this flash flood warning at Apr 9, 2021, 10:53 PM CDT for Rankin County, Scott County, Smith County, Mississippi. It was in force for 2 hr. 4 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: Apr 9, 2021, 10:53 PM CDT (03:53 UTC)
Expired: Apr 10, 2021, 1:15 AM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Rankin County, MS, Scott County, MS, Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 8 km from the middle of the area, began a volume at 03:53 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
Apr 9, 11:15 PM CDT	FLASH FLOOD	Florence, MS	SOCIAL MEDIA PICTURE OF WATER FLOWING ACROSS ROADS IN FLORENCE.
Apr 9, 11:47 PM CDT	FLASH FLOOD	2 Nw Whitfield, MS	FLOODING IN A FEW SPOTS ON OLD WHITFIELD RD.
Apr 9, 11:47 PM CDT	FLASH FLOOD	2 Nw Whitfield, MS	FLOODING ON OLD WHITFIELD RD.
Apr 10, 12:01 AM CDT	FLASH FLOOD	1 Ssw Pearl, MS	WHITE BLVD BETWEEN COUNTRY INN/SUITES AND BUSINESS CENTER PKWY IS IMPASSABLE. 2.5 FEET OF WATER OVER THE ROAD.

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

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 3.9 hours before the alert went out and 9 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: 2299 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1555 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

759 
WGUS54 KJAN 100353
FFWJAN
MSC121-123-129-100615-
/O.NEW.KJAN.FF.W.0011.210410T0353Z-210410T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
1053 PM CDT Fri Apr 9 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Rankin County in central Mississippi...
  Southwestern Scott County in central Mississippi...
  Northwestern Smith County in central Mississippi...

* Until 115 AM CDT.

* At 1053 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. 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...
  Jackson, Pearl, Brandon, Richland, Morton, Star, Florence, 
  Pelahatchie, Johns, Cato, Monterey, Pisgah, Goshen Springs, 
  Leesburg, Piney Woods, Branch, Pulaski, Forkville, Whites and 
  Polkville.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

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 3249 8994 3249 8968 3233 8953 3222 8959
      3204 8990 3204 9023 3209 9023 3217 9025
      3218 9024 3217 9023 3218 9021 3219 9020
      3220 9020 3220 9018 3221 9019 3222 9019
      3224 9021 3238 8996

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR 

$$

CME

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:29 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Rankin, Scott	61 min
Apr 9, 7:37 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Montgomery, Webster	98 min
Apr 9, 7:38 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott, Smith	67 min
Apr 9, 7:40 PM CDT	Special Weather Statement	JAN	Washington	35 min
Apr 9, 7:48 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	57 min
Apr 9, 7:57 PM CDT	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	51 min
Apr 9, 8:10 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Rankin	65 min
Apr 9, 8:14 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha	46 min
Apr 9, 8:26 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Warren, Yazoo	49 min
Apr 9, 8:29 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake	61 min
Apr 9, 8:34 PM CDT	Tornado Warning	JAN	Rankin, Scott	34 min
Apr 9, 8:46 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	59 min
Apr 9, 8:49 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Warren	41 min
Apr 9, 9:09 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Rankin, Scott	51 min
Apr 9, 9:33 PM CDT	Flash Flood Warning	JAN	Hinds, Madison, Rankin	3 hr
Apr 9, 9:43 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	92 min
Apr 9, 10:06 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton, Scott, Smith	54 min
Apr 9, 10:19 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin	27 min
Apr 9, 10:57 PM CDT	Special Weather Statement	JAN	Claiborne, Copiah, Hinds, Jefferson, Warren	33 min
Apr 9, 11:38 PM CDT	Special Weather Statement	JAN	Copiah, Hinds, Lawrence, Lincoln, Rankin	37 min
Apr 9, 11:45 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton, Scott, Smith	45 min
Apr 9, 11:52 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Lincoln	38 min
Apr 10, 12:01 AM CDT	Flash Flood Warning	JAN	Adams, Franklin, Jefferson, Lincoln	3 hr
Apr 10, 12:29 AM CDT	Special Weather Statement	JAN	Clarke, Lauderdale	31 min
Apr 10, 12:31 AM CDT	Tornado Warning	JAN	Jefferson Davis, Lamar, Marion	44 min
Apr 10, 12:50 AM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper	55 min
Apr 10, 12:53 AM CDT	Flash Flood Warning	JAN	Covington, Jasper, Jefferson Davis, Jones, Lawrence, Simpson and 1 more	3 hr
Apr 10, 1:02 AM CDT	Tornado Warning	JAN	Forrest, Lamar	38 min
Apr 10, 1:09 AM CDT	Flash Flood Warning	JAN	Clarke, Lauderdale	3 hr
Apr 10, 1:48 AM CDT	Flash Flood Warning	JAN	Forrest, Jones, Lamar, Marion	3 hr
Apr 10, 2:17 AM CDT	Special Weather Statement	JAN	Claiborne, Franklin, Jefferson	28 min
Apr 10, 2:53 AM CDT	Flash Flood Warning	JAN	Adams	118 min
Apr 10, 3:43 AM CDT	Special Weather Statement	JAN	Lamar, Marion	47 min
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Leake	7 days
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Leake	6 days
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Attala	24 hr
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Leake	4 days
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Leake	24 hr
Apr 10, 9:28 AM CDT	River Flood Warning	JAN	Madison, Rankin	24 hr
Apr 10, 9:32 AM CDT	River Flood Warning	JAN	Hinds, Rankin	5 days
Apr 10, 9:36 AM CDT	River Flood Warning	JAN	Noxubee	3 days
Apr 10, 9:40 AM CDT	River Flood Warning	JAN	Copiah, Simpson	21 days
Apr 10, 9:40 AM CDT	River Flood Warning	JAN	Simpson	35 hr
Apr 10, 9:40 AM CDT	River Flood Warning	JAN	Marion	21 days
Apr 10, 10:44 AM CDT	River Flood Warning	JAN	Clarke	3 days

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.