Alert archive / Florida / Flash Flood Warnings in 2020

Flash Flood Warning 35, NWS Mobile, AL

October 10, 2020Escambia County, Santa Rosa County, Florida

NWS Mobile, AL issued this flash flood warning at Oct 10, 2020, 10:45 AM CDT for Escambia County, Santa Rosa County, Florida. It was in force for 3 hr. 4 reports 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: Oct 10, 2020, 10:45 AM CDT (15:45 UTC)
Expired: Oct 10, 2020, 1:45 PM CDT
In force: 3 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 105 km from the middle of the area, began a volume at 15:48 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
Oct 10, 11:05 AM CDT	FLASH FLOOD	1 E Gulf Breeze, FL	MAJOR FLOODING WAS REPORTED ALONG GULF BREEZE PARKWAY IN GULF BREEZE.
Oct 10, 1:00 PM CDT	FLASH FLOOD	2 Sw Bagdad, FL	A PORTION OF DA LISA RD. IS CLOSED.
Oct 10, 1:00 PM CDT	FLASH FLOOD	3 Wsw Bagdad, FL	ROAD CLOSED NEAR THE INTERSECTION OF GARDEN RD. AND COMMERCE RD.
Oct 10, 1:00 PM CDT	FLASH FLOOD	6 E Pensacola Internati, FL	FLOODING NEAR THE INTERSECTION OF RAUGHTON RD. AND CLEARVIEW ST.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 3.8 hours before the alert went out and 243 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: 26 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

056 
WGUS54 KMOB 101545
FFWMOB
FLC033-113-101845-
/O.NEW.KMOB.FF.W.0035.201010T1545Z-201010T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
1045 AM CDT Sat Oct 10 2020

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  South Central Escambia County in northwestern Florida...
  Central Santa Rosa County in northwestern Florida...

* Until 145 PM CDT.

* At 1044 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Pensacola, Ferry Pass, Brent, West Pensacola, Warrington, Pace, 
  Milton, Gulf Breeze, Goulding, Bagdad, Oriole Beach, Floridatown, 
  Pea Ridge, Pensacola Beach, Point Baker, Roeville, Mulat, Harp, 
  Garcon Point and Olive.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, urban areas, highways, streets and underpasses 
as well as other drainage areas and low lying spots.

&&

LAT...LON 3032 8733 3037 8732 3039 8732 3043 8730
      3074 8717 3074 8696 3063 8699 3056 8701
      3040 8706 3035 8708 3031 8709 3030 8734

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 2 HOURS 

$$

BB

1 follow-up statement

881 
WGUS74 KMOB 101840
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
140 PM CDT Sat Oct 10 2020

FLC033-113-101850-
/O.EXP.KMOB.FF.W.0035.000000T0000Z-201010T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Escambia FL-Santa Rosa FL-
140 PM CDT Sat Oct 10 2020

...FLASH FLOOD WARNING WILL EXPIRE AT 145 PM CDT THIS AFTERNOON FOR 
SOUTH CENTRAL ESCAMBIA AND CENTRAL SANTA ROSA COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3030 8734 3032 8733 3037 8732 3039 8732
      3043 8730 3059 8723 3074 8717 3074 8696
      3063 8699 3056 8701 3040 8706 3038 8707
      3035 8708 3034 8708 3031 8709

$$

BB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 2:19 AM CDT	Tornado Warning	MOB	Escambia, Santa Rosa	41 min
Oct 10, 4:10 AM CDT	Tornado Warning	MOB	Okaloosa	35 min
Oct 10, 6:01 AM CDT	Tornado Warning	MOB	Okaloosa	44 min
Oct 10, 10:09 AM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	111 min
Oct 10, 10:36 AM CDT	Areal Flood Advisory	MOB	Escambia, Santa Rosa	114 min
Oct 10, 2:14 PM CDT	River Flood Warning	MOB	Okaloosa, Santa Rosa	9 hr

Nearby

Flash Flood Warnings in Florida, 2020 Every flash flood warning in 2020

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.