Alert archive / Florida / Flash Flood Warnings in 2010

Flash Flood Warning 13, NWS Mobile, AL

May 16, 2010Escambia County, Florida

NWS Mobile, AL issued this flash flood warning at May 16, 2010, 8:59 AM CDT for Escambia County, Florida. 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 16, 2010, 8:59 AM CDT (13:59 UTC)
Expired
May 16, 2010, 11:00 AM CDT
In force
2 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Escambia County, FL

The radar

The Mobile radar (KMOB), 91 km from the middle of the area, began a volume at 14:00 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 12:00Z, 2.0 hours before the alert went out and 232 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2010-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2424 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2010-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2424 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

Open this sounding in Storm Lab

The text

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

170 
WGUS54 KMOB 161359
FFWMOB
FLC033-161600-
/O.NEW.KMOB.FF.W.0013.100516T1359Z-100516T1600Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
859 AM CDT SUN MAY 16 2010

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ESCAMBIA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1100 AM CDT

* AT 855 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM THUNDERSTORMS TO MOVE NORTHWARD AT 10 TO 15 MPH OVER THE 
  WARNED AREA. DOPPLER WEATHER RADAR MANY PLACES IN THE WARNING AREA 
  HAVE ALREADY EXPERIENCED 2 TO 3 INCHES OF RAIN FROM THE PASSAGE OF 
  RECENT STORMS. 

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA FROM ADDITIONAL STORMS THAT WILL MOVE NORTHWARD OUT OF 
SOUTHERN ESCAMBIA COUNTY FLORIDA.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 3060 8726 3050 8715 3045 8720 3042 8734
      3047 8735 3047 8740 3052 8744 3059 8740
      3066 8728

$$

10
1 follow-up statement
932 
WGUS74 KMOB 161452
FFSMOB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
952 AM CDT SUN MAY 16 2010

FLC033-161600-
/O.CON.KMOB.FF.W.0013.000000T0000Z-100516T1600Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESCAMBIA FL-
952 AM CDT SUN MAY 16 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR
CENTRAL ESCAMBIA COUNTY...

AT 947 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A CLUSTER OF THUNDERSTORMS OVER THE WESTERN FLORIDA 
PANHANDLE FROM MILTON TO PENSACOLA. ALTHOUGH AT THIS TIME...MOST OF 
THE ORGANIZED THUNDERSTORMS WITH HEAVY RAIN ARE JUST OUTSIDE THE 
WARNING AREA...THERE CONTINUES TO BE POTENTIAL FOR ADDITIONAL 
THUNDERSTORM DEVELOPMENT AND FLASH FLOODING OVER THE WARNED AREA. 
STORMS WERE MOVING NORTH NORTHEAST AT 10 TO 15 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GONZALEZ...
ENSLEY...COTTAGE HILL...CANTONMENT AND BEULAH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

TO REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL
FREE AT 1 8 7 7 6 3 3 6 7 7 2.

&&

LAT...LON 3060 8726 3050 8715 3045 8720 3042 8734
      3047 8735 3047 8740 3052 8744 3059 8740
      3066 8728

$$

10

Nearby

Flash Flood Warnings in Florida, 2010Every flash flood warning in 2010

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.