Alert archive / Mississippi / Flash Flood Warnings in 2016

Flash Flood Warning 8, NWS Mobile, AL

March 11, 2016Perry County, Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Mar 11, 2016, 7:28 AM CST for Perry County, Stone County, Mississippi. It was in force for 3 hr. 2 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: Mar 11, 2016, 7:28 AM CST (13:28 UTC)
Expired: Mar 11, 2016, 10:30 AM CST
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Perry County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 94 km from the middle of the area, began a volume at 13:30 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
Mar 11, 9:30 AM CST	FLASH FLOOD	New Augusta, MS	WATER HAS ENTERED A BUILDING AT THE ELEMENTARY SCHOOL IN NEW AUGUSTA. SEVERAL ROADS CLOSED IN THE NORTHERN HALF OF THE COUNTY DUE TO FLOODING.
Mar 11, 9:30 AM CST	FLASH FLOOD	Runnelstown, MS	PORTION OF BUCK CREEK LOOP ROAD AND HANCOCK ROAD DAMAGED BY FLOOD WATERS. PORTION OF BUFORD GILLIS ROAD DAMAGED WELL SOUTH OF RUNNELSTOWN. BRIDGE WASHOUT ON HIGHWAY 42 AT TALLAHALLA CREEK.

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

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.5 hours before the alert went out and 98 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: 1067 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 479 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 320 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted.

962 
WGUS54 KMOB 111328
FFWMOB
MSC111-131-111630-
/O.NEW.KMOB.FF.W.0008.160311T1328Z-160311T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
728 AM CST FRI MAR 11 2016

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PERRY COUNTY IN SOUTHEASTERN MISSISSIPPI...
  STONE COUNTY IN SOUTHEASTERN MISSISSIPPI...

* UNTIL 1030 AM CST
    
* AT 726 AM CST...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO TO THREE INCHES OF
  RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN
  SHORTLY.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW! ACT QUICKLY TO PROTECT YOUR LIFE.

IF YOU ENCOUNTER FLOODED ROADS...TURN AROUND...DON'T DROWN! MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3091 8934 3091 8914 3142 8915 3142 8886
      3074 8889 3065 8934

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 8:19 PM CST	Areal Flood Advisory	MOB	Greene, Perry, Wayne	3 hr
Mar 10, 8:39 PM CST	Flash Flood Warning	MOB	Greene, Perry, Wayne	2 hr
Mar 10, 10:52 PM CST	Areal Flood Warning	MOB	Greene, Perry, Wayne	9 hr
Mar 11, 2:14 AM CST	River Flood Warning	MOB	Perry	6 days
Mar 11, 2:22 AM CST	River Flood Warning	MOB	George, Greene, Perry	13 days
Mar 11, 2:30 AM CST	River Flood Warning	MOB	George, Greene, Wayne	15 days
Mar 11, 2:40 AM CST	River Flood Warning	MOB	George, Greene, Jackson	13 days
Mar 11, 6:42 AM CST	Special Weather Statement	MOB	Perry, Stone	63 min
Mar 11, 7:34 AM CST	Areal Flood Warning	MOB	Greene, Wayne	6 hr
Mar 11, 7:36 AM CST	River Flood Warning	MOB	Greene, Wayne	6 days
Mar 11, 8:01 AM CST	Special Weather Statement	MOB	George	44 min
Mar 11, 8:15 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	30 min
Mar 11, 8:45 AM CST	Special Weather Statement	MOB	Greene	60 min
Mar 11, 8:48 AM CST	Flash Flood Warning	MOB	George	3 hr
Mar 11, 9:15 AM CST	Flash Flood Warning	MOB	Greene, Wayne	5 hr
Mar 11, 10:29 AM CST	Flash Flood Warning	MOB	Perry, Stone	6 hr
Mar 11, 11:43 AM CST	Flash Flood Warning	MOB	George	5 hr
Mar 11, 2:14 PM CST	Areal Flood Warning	MOB	George, Greene, Perry, Stone, Wayne	24 hr

Nearby

Flash Flood Warnings in Mississippi, 2016 Every flash flood warning in 2016

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.