Alert archive / Mississippi / Flash Flood Warnings in 2021

Flash Flood Warning 109, NWS Jackson, MS

October 5, 2021Lauderdale County, Mississippi

NWS Jackson, MS issued this flash flood warning at Oct 5, 2021, 10:07 PM CDT for Lauderdale County, Mississippi. It was in force for 2 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: Oct 5, 2021, 10:07 PM CDT (03:07 UTC)
Expired: Oct 6, 2021, 12:15 AM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

County Lauderdale County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 118 km from the middle of the area, began a volume at 03:10 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, 3.1 hours before the alert went out and 127 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: 968 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1259 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

155 
WGUS54 KJAN 060307
FFWJAN
MSC075-060515-
/O.NEW.KJAN.FF.W.0109.211006T0307Z-211006T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Jackson MS
1007 PM CDT Tue Oct 5 2021

The National Weather Service in Jackson has issued a

* Flash Flood Warning for...
  Central Lauderdale County in east central Mississippi...

* Until 1215 AM CDT.

* At 1007 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2.5 inches of 
  rain have fallen. Additional rainfall amounts of 1 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...
  Meridian, Marion, Zero and Savoy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3222 8882 3238 8878 3252 8871 3250 8851
      3232 8858 3223 8863 3222 8879 3222 8880
      3222 8881

FLASH FLOOD...RADAR INDICATED

$$

EC

2 follow-up statements

890 
WGUS74 KJAN 060357
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
1057 PM CDT Tue Oct 5 2021

MSC075-060515-
/O.CON.KJAN.FF.W.0109.000000T0000Z-211006T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lauderdale MS-
1057 PM CDT Tue Oct 5 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT WEDNESDAY 
FOR CENTRAL LAUDERDALE COUNTY...

At 1057 PM CDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Between 2 and 5 inches of rain 
have fallen, with the heaviest amounts over the south to southeast 
side of Meridian. Additional rainfall amounts of 1 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...
  Meridian, Marion, Zero and Savoy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3222 8882 3238 8878 3252 8871 3250 8851
      3232 8858 3223 8863 3222 8879 3222 8880
      3222 8881

FLASH FLOOD...RADAR INDICATED

$$

EC

013 
WGUS74 KJAN 060514
FFSJAN

Flash Flood Statement
National Weather Service Jackson MS
1214 AM CDT Wed Oct 6 2021

MSC075-060524-
/O.EXP.KJAN.FF.W.0109.000000T0000Z-211006T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lauderdale MS-
1214 AM CDT Wed Oct 6 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1215 AM CDT EARLY THIS MORNING 
FOR CENTRAL LAUDERDALE COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3222 8882 3238 8878 3252 8871 3250 8851
      3232 8858 3223 8863 3222 8879 3222 8880
      3222 8881

$$

DL

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 5, 7:06 PM CDT	Special Weather Statement	JAN	Lowndes	24 min
Oct 5, 7:14 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lowndes, Noxubee, Oktibbeha, Winston	46 min
Oct 5, 7:15 PM CDT	Flash Flood Warning	JAN	Lowndes, Noxubee, Oktibbeha	103 min
Oct 5, 7:34 PM CDT	Special Weather Statement	JAN	Clay	41 min
Oct 5, 7:53 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes	67 min
Oct 5, 8:14 PM CDT	Flash Flood Warning	JAN	Lowndes, Noxubee	2 hr
Oct 6, 5:50 AM CDT	Dense Fog Advisory	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Lawrence and 1 more	3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.