Alert archive / Mississippi / Flash Flood Warnings in 2009

Flash Flood Warning 32, NWS Mobile, AL

May 6, 2009Greene County, Perry County, Wayne County, Mississippi; Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this flash flood warning at May 6, 2009, 3:16 PM CDT for Greene County, Perry County, Wayne County, Mississippi; Choctaw County, Clarke County, Washington County, Alabama. 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: May 6, 2009, 3:16 PM CDT (20:16 UTC)
Expired: May 6, 2009, 5:20 PM CDT
In force: 2 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL, Greene County, MS, Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 101 km from the middle of the area, began a volume at 20:16 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 12:00Z, 8.3 hours before the alert went out and 170 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: 2140 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 271 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 10.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 062016
FFWMOB
ALC023-025-129-MSC041-111-153-062315-
/O.NEW.KMOB.FF.W.0032.090506T2016Z-090506T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
316 PM CDT WED MAY 6 2009

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTHERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  SOUTH CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF GROVE HILL...
  NORTHERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF CHATOM...

* UNTIL 615 PM CDT

* AT 315 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF THUNDERSTORMS EXTENDING FROM NORTHERN PERRY COUNTY NEAR
  THE CITY OF RICHTON EASTWARD TO ACROSS CENTRAL CLARKE COUNTY NEAR
  THE CITY OF GROVE HILL.  RADAR RAINFALL ESTIMATES INDICATE THAT
  THESE STORMS HAVE PRODUCED UP TO 3 TO 4 INCHES OF RAIN OVER THE
  LAST HOUR AND WILL CONTINUE TO PRODUCE UP TO AN ADDITIONAL 3
  INCHES OF RAIN AS THE LINE OF STORMS SLOWLY SHIFTS SOUTHWARD AND
  CONTINUE TO MOVE OVER THE SAME GENERAL AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WINN...
  WHATELY...SUGGSVILLE...SILVER CROSS...SERVICE...SCYRENE...
  PEACOCK...NETTLEBORO...MILLRY...KOENTON...HEALING SPRINGS...
  FULTON...FRANKVILLE...DICKINSON...CULLOMBURG...BLADON SPRINGS...
  BIGBEE...ALLEN...WINCHESTER AND DENHAM

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

LAT...LON 3143 8914 3144 8894 3155 8893 3177 8814
      3174 8803 3183 8761 3155 8759 3123 8915

$$

1 follow-up statement

000 
WGUS74 KMOB 062220
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
520 PM CDT WED MAY 6 2009

ALC023-025-129-MSC041-111-153-062230-
/O.CAN.KMOB.FF.W.0032.000000T0000Z-090506T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AL-CLARKE AL-CHOCTAW AL-PERRY MS-GREENE MS-WAYNE MS-
520 PM CDT WED MAY 6 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHERN WAYNE...
NORTHERN GREENE...NORTHERN PERRY...SOUTH CENTRAL CHOCTAW...CENTRAL
CLARKE AND NORTHERN WASHINGTON COUNTIES...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT
WEDNESDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3143 8914 3144 8894 3155 8893 3177 8814
      3174 8803 3183 8761 3155 8759 3123 8915

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 6:30 AM CDT	River Flood Warning	MOB	George, Greene, Jackson	17 hr
May 6, 6:36 AM CDT	River Flood Warning	MOB	George, Greene, Wayne	3 hr
May 6, 1:43 PM CDT	Areal Flood Advisory	MOB	Wayne	2 hr
May 6, 1:45 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	20 min
May 6, 2:56 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	44 min
May 6, 3:11 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Wayne	53 min
May 6, 3:34 PM CDT	Flash Flood Watch	MOB	Greene, Perry, Wayne	5 hr
May 6, 9:38 AM CDT	River Flood Warning	MOB	Choctaw, Clarke, Washington	8 days
May 6, 9:38 AM CDT	River Flood Warning	MOB	Choctaw, Clarke, Washington	7 days
May 6, 10:59 AM CDT	Areal Flood Advisory	MOB	Choctaw	2 hr
May 6, 1:05 PM CDT	Flash Flood Warning	MOB	Choctaw	3 hr
May 6, 2:01 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Wilcox	44 min
May 6, 2:06 PM CDT	Areal Flood Advisory	MOB	Wilcox	3 hr
May 6, 2:52 PM CDT	Flash Flood Warning	MOB	Clarke	109 min
May 6, 3:29 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Washington	45 min
May 6, 3:33 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Crenshaw, Monroe, Wilcox	57 min
May 6, 3:54 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Clarke, Conecuh, Monroe	66 min
May 6, 4:58 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Covington, Crenshaw	47 min
May 6, 5:50 PM CDT	Severe Thunderstorm Warning	MOB	Covington	25 min

Nearby

Flash Flood Warnings in Mississippi, 2009 Flash Flood Warnings in Alabama, 2009 Every flash flood warning in 2009

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.