Alert archive / Mississippi / Flash Flood Warnings in 2018

Flash Flood Warning 41, NWS Mobile, AL

December 28, 2018Greene County, Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Dec 28, 2018, 3:14 AM CST for Greene County, Perry County, Wayne County, Mississippi. It was in force for 3 hr. 1 report 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: Dec 28, 2018, 3:14 AM CST (09:14 UTC)
Expired: Dec 28, 2018, 6:15 AM CST
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Emergency: Flash flood emergency
Flood severity: None

Counties Greene County, MS, Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 114 km from the middle of the area, began a volume at 09:18 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
Dec 28, 5:13 AM CST	FLOOD	3 W Piave, MS	ROAD WASHED OUT AND PINE TREES DOWN NEAR LOVEWELL RD.

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, 9.2 hours before the alert went out and 143 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: 11 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

610 
WGUS54 KMOB 280914
FFWMOB
MSC041-111-153-281215-
/O.NEW.KMOB.FF.W.0041.181228T0914Z-181228T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
314 AM CST FRI DEC 28 2018

...FLASH FLOOD EMERGENCY FOR PERRY, WAYNE AND NORTHWEST GREENE 
COUNTIES IN SOUTHEAST MISSISSIPPI...

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Northern Perry County in southeastern Mississippi...
  Wayne County in southeastern Mississippi...
  Northwestern Greene County in southeastern Mississippi...

* Until 615 AM CST.

* At 311 AM CST, moderate rain is still ongoing across the warned 
  area. Extreme flash flooding is occurring with numerous roads 
  closed and many homes and businesses being threatened. Water 
  rescues are being reported. Up to a foot of storm total 
  rainfall has been reported in some locations.

  This is a FLASH FLOOD EMERGENCY for the Perry, Wayne and Northwest 
  Greene County area. This is a PARTICULARLY DANGEROUS SITUATION. 
  SEEK HIGHER GROUND NOW!

* Some locations that will experience flooding include...
  Waynesboro, Richton, Clara, New Augusta and Buckatunna. 

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.

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 3143 8915 3143 8894 3182 8894 3185 8865
      3189 8847 3151 8845 3109 8915

$$

1 follow-up statement

384 
WGUS74 KMOB 281128
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
528 AM CST FRI DEC 28 2018

MSC041-111-153-281215-
/O.CON.KMOB.FF.W.0041.000000T0000Z-181228T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry MS-Wayne MS-Greene MS-
528 AM CST FRI DEC 28 2018

...THIS IS A FLASH FLOOD EMERGENCY FOR PERRY, WAYNE AND NORTHWEST 
GREENE COUNTIES IN SOUTHEAST MISSISSIPPI...

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CST FOR
NORTHERN PERRY...WAYNE AND NORTHWESTERN GREENE COUNTIES...

At 524 AM CST, emergency management reported ongoing extreme flash 
flooding with numerous roads closed or washed out and many homes and 
businesses being threatened. Up to a foot of rain has fallen during 
this event in some locations. While heavy rain currently ending, it 
will take time for flood waters to recede.

This is a FLASH FLOOD EMERGENCY for the Perry, Wayne and Northwest 
Greene County area. This is a PARTICULARLY DANGEROUS SITUATION.

Some locations that will experience flooding include...
Waynesboro, Richton, Clara, New Augusta and Buckatunna. 

Additional rainfall amounts of under an inch are possible in the 
warned area over the next couple hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.

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

&&

LAT...LON 3143 8915 3143 8894 3182 8894 3185 8865
      3189 8847 3151 8845 3109 8915

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 27, 6:13 PM CST	Flash Flood Warning	MOB	Perry, Wayne	6 hr
Dec 27, 6:32 PM CST	Flash Flood Warning	MOB	Greene, Wayne	6 hr
Dec 27, 7:55 PM CST	Flash Flood Warning Emergency	MOB	Greene, Perry, Wayne	7 hr
Dec 27, 8:13 PM CST	Special Weather Statement	MOB	Wayne	47 min
Dec 27, 9:41 PM CST	River Flood Warning	MOB	George, Greene, Jackson	15 days
Dec 28, 12:14 AM CST	Flash Flood Warning	MOB	Wayne	3 hr
Dec 28, 1:30 AM CST	Special Weather Statement	MOB	Perry	45 min
Dec 28, 1:43 AM CST	Special Weather Statement	MOB	Wayne	32 min
Dec 28, 2:26 AM CST	Flash Flood Warning	MOB	Greene, Perry, Stone	3 hr
Dec 28, 2:47 AM CST	Tornado Warning	MOB	Greene, Wayne	28 min
Dec 28, 4:17 AM CST	Special Weather Statement	MOB	George	43 min
Dec 28, 4:27 AM CST	River Flood Warning	MOB	Perry	6 days
Dec 28, 4:45 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	45 min
Dec 28, 4:52 AM CST	Areal Flood Advisory	MOB	George, Greene	3 hr
Dec 28, 6:11 AM CST	River Flood Warning	MOB	Greene, Wayne	3 days
Dec 28, 6:13 AM CST	Areal Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Dec 28, 9:03 AM CST	Areal Flood Warning	MOB	George, Greene, Perry, Wayne	27 hr
Dec 28, 9:57 AM CST	River Flood Warning	MOB	Perry	21 days

Nearby

Flash Flood Warnings in Mississippi, 2018 Every flash flood warning in 2018

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.