Alert archive / Mississippi / Flash Flood Warnings in 2013

Flash Flood Warning 25, NWS Mobile, AL

July 4, 2013Wayne County, Mississippi; Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at Jul 4, 2013, 9:22 PM CDT for Wayne County, Mississippi; Washington County, Alabama. 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: Jul 4, 2013, 9:22 PM CDT (02:22 UTC)
Expired: Jul 5, 2013, 12:15 AM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 02:25 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
Jul 5, 12:00 AM CDT	FLASH FLOOD	Buckatunna, MS	FLATS RD IS UNDER WATER. HWY 45 AT OLD WINCHESTER IN BUCKATUNNA IS FLOODED.

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, 2.4 hours before the alert went out and 172 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: 902 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1452 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

063 
WGUS54 KMOB 050222
FFWMOB
ALC129-MSC153-050515-
/O.NEW.KMOB.FF.W.0025.130705T0222Z-130705T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
922 PM CDT THU JUL 4 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 1215 AM CDT

* AT 920 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
  SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL FROM 
  5 MILES SOUTHWEST OF BUCKATUNNA TO NEAR MILLRY. RADAR ESTIMATES 
  THAT 3 TO 6 INCHES OF RAIN HAS FALLEN WITHIN THIS  GENERAL AREA
  SINCE 7 PM CDT. AN ADDITIONAL 1 TO 3 INCHES OF RAIN MAY OCCUR AS 
  THUNDERSTORMS MOVE SLOWLY TO THE NORTHEAST AT 15 TO 20 MPH. 
  RAPID RUNOFF FROM TORRENTIAL DOWNPOURS WILL LIKELY RESULT IN 
  FLASH FLOODING WITHIN THE WARNED AREA.

* LOCATIONS IMPACTED INCLUDE...
  BUCKATUNNA...         
  MILLRY...       

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3170 8842 3170 8832 3157 8820 3143 8862
      3144 8863 3155 8870

$$

1 follow-up statement

017 
WGUS74 KMOB 050355
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1055 PM CDT THU JUL 4 2013

ALC129-MSC153-050515-
/O.CON.KMOB.FF.W.0025.000000T0000Z-130705T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-WAYNE MS-
1055 PM CDT THU JUL 4 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
SOUTHEASTERN WAYNE AND NORTHWESTERN WASHINGTON COUNTIES...

AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
DETECT SHOWERS AND THUNDERSTORMS PRODUCING HEAVY RAIN FROM 5 MILES 
WEST OF MILLRY TO NEAR BUCKATUNNA...TO 8 MILES WEST OF BUCKATUNNA. 
RADAR ESTIMATES THAT MANY LOCATIONS WITHIN THE WARNED AREA HAVE 
RECEIVED 4 TO 8 INCHES OF RAIN...WITH ISOLATED AMOUNTS NEAR 10 
INCHES SINCE 700 PM CDT THIS EVENING. RAPID RUNOFF FROM THESE 
TORRENTIAL RAINS WILL LIKELY CAUSE CONTINUED FLASH FLOODING IN THE 
WARNED AREA.

LOCATIONS IMPACTED INCLUDE...
  BUCKATUNNA...         MILLRY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. SEEK
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE OR WALK INTO AREAS WHERE
WATER CROSSES A ROAD. TURN AROUND - DON'T DROWN!

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3170 8842 3170 8832 3157 8820 3143 8862
      3144 8863 3155 8870

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 7:58 PM CDT	Areal Flood Advisory	MOB	Greene, Wayne	107 min
Jul 4, 11:14 PM CDT	Areal Flood Advisory	MOB	Greene, Perry, Wayne	3 hr
Jul 4, 11:32 PM CDT	Flash Flood Warning	MOB	Greene, Perry, Wayne	3 hr
Jul 5, 12:12 AM CDT	Flash Flood Warning	MOB	Wayne	3 hr
Jul 5, 9:17 AM CDT	Areal Flood Advisory	MOB	Baldwin	118 min
Jul 5, 11:25 AM CDT	Special Marine Warning	MOB		35 min
Jul 5, 12:07 PM CDT	Special Marine Warning	MOB		83 min
Jul 5, 1:26 PM CDT	Special Marine Warning	MOB		94 min

Nearby

Flash Flood Warnings in Mississippi, 2013 Flash Flood Warnings in Alabama, 2013 Every flash flood warning in 2013

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.