Alert archive / Florida / Flash Flood Warnings in 2021
Flash Flood Warning 75, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Aug 31, 2021, 7:14 AM CDT for Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 6 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
- Aug 31, 2021, 7:14 AM CDT (12:14 UTC)
- Expired
- Aug 31, 2021, 1:15 PM CDT
- In force
- 6 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), 97 km from the middle of the area, began a volume at 12:13 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 31, 8:40 AM CDT | FLASH FLOOD | 1 E Ocean City, FL | PHOTOS OF FLASH FLOODING WERE RELAYED VIA SOCIAL MEDIA. WATER WAS COMPLETELY COVERING BEACHVIEW DR NE AND A CAR WAS PARTIALLY SUBMERGED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 0.2 hours before the alert went out and 252 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
- 822 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
724
WGUS54 KMOB 311214
FFWMOB
FLC033-091-113-311815-
/O.NEW.KMOB.FF.W.0075.210831T1214Z-210831T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
714 AM CDT Tue Aug 31 2021
The National Weather Service in Mobile has issued a
* Flash Flood Warning for...
Southeastern Escambia County in northwestern Florida...
Southern Okaloosa County in northwestern Florida...
Southern Santa Rosa County in northwestern Florida...
* Until 115 PM CDT Tuesday.
* At 714 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. The expected rainfall rate is 1 to 3 inches in 1
hour. Additional rainfall amounts of 1 to 3 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Pensacola, Ferry Pass, Brent, West Pensacola, Wright, Fort Walton
Beach, Ensley, Warrington, Niceville, Destin, Eglin AFB,
Valparaiso, Gulf Breeze, Goulding, Mary Esther, Bagdad, Ocean
City, Lake Lorraine, Oriole Beach and Navarre.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3054 8729 3079 8639 3038 8639 3031 8728
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR
$$
MM1 follow-up statement
443
WGUS74 KMOB 311550
FFSMOB
Flash Flood Statement
National Weather Service Mobile AL
1050 AM CDT Tue Aug 31 2021
FLC033-113-311600-
/O.CAN.KMOB.FF.W.0075.000000T0000Z-210831T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Escambia FL-Santa Rosa FL-
1050 AM CDT Tue Aug 31 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN ESCAMBIA AND
SOUTHERN SANTA ROSA COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 3037 8692 3040 8692 3041 8680 3068 8679
3079 8639 3038 8639 3034 8690 3035 8691
$$
FLC091-311815-
/O.CON.KMOB.FF.W.0075.000000T0000Z-210831T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Okaloosa FL-
1050 AM CDT Tue Aug 31 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 PM CDT THIS
AFTERNOON FOR SOUTHERN OKALOOSA COUNTY...
At 1050 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain in Lots of runoff still being noted along southeastern
Okaloosa county from Destin to the Walton county line. Between 2 and
4 inches of rain have fallen. The expected rainfall rate is inches
in 1 hour. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Wright, Fort Walton Beach, Niceville, Destin, Eglin AFB,
Valparaiso, Mary Esther, Ocean City, Lake Lorraine, Shalimar,
Cinco Bayou, Navarre Beach, Longwood, Eglin Village, Postil,
Seminole, Wynnehaven Beach, Killingsworth Crossroads and Deerland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3037 8692 3040 8692 3041 8680 3068 8679
3079 8639 3038 8639 3034 8690 3035 8691
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL... INCHES IN 1 HOUR
$$
JMMThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 3:33 AM CDT | Flash Flood Warning | MOB | Escambia, Santa Rosa | 4 hr |
| Aug 31, 6:04 AM CDT | High Surf Advisory | MOB | Escambia, Okaloosa, Santa Rosa | 12 hr |
| Aug 31, 7:09 AM CDT | Areal Flood Warning | MOB | Escambia | 6 hr |
| Aug 31, 7:57 AM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 33 min |
Nearby
Flash Flood Warnings in Florida, 2021Every flash flood warning in 2021
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.