Alert archive / Mississippi / Flash Flood Warnings in 2018

Flash Flood Warning 38, NWS Mobile, AL

December 28, 2018Wayne County, Mississippi

NWS Mobile, AL issued this flash flood warning at Dec 28, 2018, 12:14 AM CST for Wayne 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: Dec 28, 2018, 12:14 AM CST (06:14 UTC)
Expired: Dec 28, 2018, 3:15 AM CST
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Wayne County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 130 km from the middle of the area, began a volume at 06:18 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 6.2 hours before the alert went out and 140 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.

165 
WGUS54 KMOB 280614
FFWMOB
MSC153-280915-
/O.NEW.KMOB.FF.W.0038.181228T0614Z-181228T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1214 AM CST FRI DEC 28 2018

The National Weather Service in Mobile has issued a

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

* Until 315 AM CST.

* At 1213 AM CST, local law enforcement reported thunderstorms
  producing heavy rain across the warned area. Up to three inches of
  rain have already fallen. Flash flooding is expected to begin
  shortly.

* Flash flooding will remain over mainly rural areas of northern
  Wayne County.

Additional rainfall amounts of 2 to 4 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 3182 8894 3185 8865 3189 8847 3182 8847
      3157 8894

$$

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, 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, 3:14 AM CST	Flash Flood Warning Emergency	MOB	Greene, Perry, Wayne	3 hr
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.