Alert archive / Florida / Flash Flood Warnings in 2011
Flash Flood Warning 23, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Jul 16, 2011, 11:30 PM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida. 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
- Jul 16, 2011, 11:30 PM CDT (04:30 UTC)
- Expired
- Jul 17, 2011, 3:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 92 km from the middle of the area, began a volume at 04:29 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.5 hours before the alert went out and 247 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.
- Mixed-layer CAPE
- 1264 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
284
WGUS54 KMOB 170430
FFWMOB
FLC033-091-113-170830-
/O.NEW.KMOB.FF.W.0023.110717T0430Z-110717T0830Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1130 PM CDT SAT JUL 16 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EXTREME SOUTHEASTERN ESCAMBIA COUNTY IN NORTHWEST FLORIDA...
SOUTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
THIS INCLUDES THE CITIES OF...OCEAN CITY...LAKE LORRAINE...
WRIGHT...VALPARAISO...NICEVILLE...MARY ESTHER...EGLIN AFB...
DESTIN...
SOUTHERN SANTA ROSA COUNTY IN NORTHWEST FLORIDA...
THIS INCLUDES THE CITY OF BAGDAD...
* UNTIL 330 AM CDT
* AT 1123 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED
PERSISTENT LOCALLY HEAVY RAINS FROM SHOWERS AND THUNDERSTORMS
OVER THE WARNED AREA.
SOME LOCATIONS IN THE WARNING AREA HAVE RECEIVED 4 TO 7 INCHES OF
RAINFALL SINCE 7 PM. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES
ARE POSSIBLE IN THE WARNED AREA THROUGH 330 AM CDT SUNDAY. THIS
ADDITIONAL RAINFALL COULD RESULT IN RAPID FLASH FLOODING OF FLOOD
PRONE AREAS.
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.
REPORT FLASH FLOODING TO YOUR NATIONAL WEATHER SERVICE IN MOBILE AT
AREA CODE 2 5 1...AND THEN 6 3 3 6 4 4 3. OR...YOU MAY CONTACT YOUR
NEAREST LAW ENFORCEMENT AGENCY OR COUNTY EMERGENCY MANAGEMENT...AND
THEY WILL RELAY YOUR REPORT.
LAT...LON 3039 8714 3046 8693 3051 8703 3045 8707
3045 8710 3050 8711 3047 8715 3051 8715
3051 8710 3061 8714 3059 8638 3046 8639
3049 8645 3043 8657 3043 8646 3039 8638
3040 8674 3033 8717
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:42 PM CDT | Areal Flood Advisory | MOB | Okaloosa | 2 hr |
| Jul 16, 11:19 PM CDT | Areal Flood Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 4 hr |
| Jul 17, 8:01 AM CDT | Flash Flood Warning | MOB | Escambia, Santa Rosa | 4 hr |
Nearby
Flash Flood Warnings in Florida, 2011Every flash flood warning in 2011
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.