Alert archive / Alabama / Flash Flood Warnings in 2005

Flash Flood Warning 50, NWS Mobile, AL

August 29, 2005Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Aug 29, 2005, 4:10 AM CDT for Mobile County, Alabama. It was in force for 4 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: Aug 29, 2005, 4:10 AM CDT (09:10 UTC)
Expired: Aug 29, 2005, 8:00 AM CDT
In force: 4 hr
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

County Mobile County, AL

The radar

The Mobile radar (KMOB), 18 km from the middle of the area, began a volume at 09:13 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.2 hours before the alert went out and 141 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: 1069 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 254 m²/s²
0-3 km storm-relative helicity: 343 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KMOB 290912
FFWMOB
ALC097-291300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
410 AM CDT MON AUG 29 2005

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  MOBILE COUNTY IN SOUTHWEST ALABAMA

* UNTIL 800 AM CDT

* AT 410 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN FROM THE OUTER BANDS OF HURRICANE KATRINA MOVING 
NORTHWARD ACROSS SOUTHERN MOBILE COUNTY. RADAR ESTIMATED 2 TO 3 
INCHES OF RAIN HAS ALREADY FALLEN IN SOUTHERN PORTIONS OF THE COUNTY 
WITH ISOLATED HIGHER TOTALS. ADDITIONAL BANDS OF HEAVY RAIN WILL 
CONTINUE TO MOVE ACROSS THE WARNED AREA OVER THE NEXT 4 HOURS. 

RESIDENTS LIVING IN FLOOD PRONE AREAS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS 
WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. REMEMBER...IT ONLY 
TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. 
MOVE TO HIGHER GROUND. REMEMBER...TURN AROUND AND DO NOT DROWN.

LAT...LON 3072 8840 3021 8838 3024 8807 3070 8807

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 7:16 PM CDT	Tornado Warning	MOB	Baldwin, Mobile	24 min
Aug 29, 4:38 AM CDT	Tornado Warning	MOB	Baldwin, Mobile	27 min
Aug 29, 5:46 AM CDT	Tornado Warning	MOB	Baldwin, Mobile	29 min
Aug 29, 6:20 AM CDT	Tornado Warning	MOB	Baldwin, Mobile	25 min
Aug 29, 7:30 AM CDT	Tornado Warning	MOB	Baldwin, Clarke, Escambia, Monroe	30 min
Aug 29, 8:11 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Aug 29, 8:26 AM CDT	Tornado Warning	MOB	Escambia	34 min
Aug 29, 8:41 AM CDT	Tornado Warning	MOB	Mobile	64 min
Aug 29, 8:58 AM CDT	Tornado Warning	MOB	Baldwin	62 min
Aug 29, 11:00 AM CDT	Tornado Warning	MOB	Escambia	60 min
Aug 29, 11:23 AM CDT	Flash Flood Warning	MOB	Baldwin, Choctaw, Clarke, Escambia, Monroe	6 hr
Aug 29, 11:40 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	65 min
Aug 29, 12:09 PM CDT	Tornado Warning	MOB	Baldwin	36 min
Aug 29, 12:51 PM CDT	Tornado Warning	MOB	Escambia	39 min
Aug 29, 1:27 PM CDT	Tornado Warning	MOB	Conecuh, Monroe	63 min
Aug 29, 1:42 PM CDT	Tornado Warning	MOB	Monroe, Wilcox	63 min
Aug 29, 1:49 PM CDT	Tornado Warning	MOB	Conecuh, Escambia	41 min
Aug 29, 2:28 PM CDT	Flash Flood Warning	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Escambia and 4 more	6 hr

Nearby

Flash Flood Warnings in Alabama, 2005 Every flash flood warning in 2005

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.