Alert archive / Florida / Areal Flood Advisories in 2021
Areal Flood Advisory 175, NWS Mobile, AL
NWS Mobile, AL issued this areal flood advisory at Aug 20, 2021, 1:04 PM CDT for Escambia County, Florida. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 20, 2021, 1:04 PM CDT (18:04 UTC)
- Expired
- Aug 20, 2021, 4:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Mobile, AL
County Escambia County, FL
The radar
The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 18:06 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, 6.1 hours before the alert went out and 230 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
- 1321 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 859 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Mobile, AL wrote its last area forecast discussion before this areal flood advisory went out at Aug 20, 6:54 AM CDT, 6 hours 10 minutes earlier.
Area forecast discussion, Aug 20, 6:54 AM CDT, 6 hours 10 minutes before
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</html>In the hours before
Special weather statement, Aug 20, 12:37 PM CDT, 27 minutes before
Special Weather Statement
National Weather Service Mobile AL
1237 PM CDT Fri Aug 20 2021
FLZ202-204-201815-
Santa Rosa Coastal FL-Escambia Coastal FL-
1237 PM CDT Fri Aug 20 2021
...A strong thunderstorm will impact portions of southwestern Santa
Rosa and south central Escambia Counties through 115 PM CDT...
At 1236 PM CDT, Doppler radar was tracking a strong thunderstorm over
Ferry Pass, moving east at 5 mph.
HAZARD...Winds in excess of 30 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Goulding,
Myrtle Grove and Floridatown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3041 8733 3061 8727 3061 8719 3056 8712
3058 8704 3060 8705 3060 8704 3058 8698
3059 8696 3049 8700 3052 8704 3044 8709
3052 8710 3058 8718 3049 8715 3043 8717
3039 8725
TIME...MOT...LOC 1736Z 279DEG 6KT 3050 8720
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPHSpecial weather statement, Aug 20, 12:42 PM CDT, 22 minutes before
Special Weather Statement
National Weather Service Mobile AL
1242 PM CDT Fri Aug 20 2021
ALZ262-264-FLZ201-201830-
Baldwin Central AL-Baldwin Inland AL-Escambia Inland FL-
1242 PM CDT Fri Aug 20 2021
...A strong thunderstorm will impact portions of east central Baldwin
and northwestern Escambia Counties through 130 PM CDT...
At 1242 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles east of Stapleton, or 13 miles southeast of Bay Minette, moving
east at 5 mph.
HAZARD...Winds in excess of 30 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Molino.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3072 8775 3089 8772 3088 8730 3087 8730
3085 8731 3084 8730 3080 8731 3078 8731
3060 8732
TIME...MOT...LOC 1742Z 280DEG 5KT 3078 8758
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPHThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 7:38 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Washington | 52 min |
| Aug 19, 7:46 PM CDT | Areal Flood Advisory | MOB | Choctaw, Clarke, Washington | 3 hr |
| Aug 19, 8:19 PM CDT | Special Weather Statement | MOB | Clarke | 56 min |
| Aug 19, 8:35 PM CDT | Flash Flood Warning | MOB | Choctaw, Clarke, Washington | 3 hr |
| Aug 19, 8:52 PM CDT | Areal Flood Advisory | MOB | Clarke | 3 hr |
| Aug 20, 12:38 PM CDT | Special Marine Warning | MOB | 82 min | |
| Aug 20, 12:42 PM CDT | Special Weather Statement | MOB | Baldwin | 48 min |
| Aug 20, 2:39 PM CDT | Special Marine Warning | MOB | 96 min | |
| Aug 20, 2:40 PM CDT | Areal Flood Advisory | MOB | Escambia | 3 hr |
| Aug 20, 3:08 PM CDT | Areal Flood Advisory | MOB | Baldwin, Escambia, Monroe | 112 min |
| Aug 20, 3:21 PM CDT | Areal Flood Advisory | MOB | Conecuh, Escambia | 114 min |
| Aug 20, 3:41 PM CDT | Areal Flood Advisory | MOB | Clarke, Washington | 2 hr |
| Aug 20, 4:19 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 41 min |
| Aug 20, 4:27 PM CDT | Areal Flood Advisory | MOB | Clarke, Monroe | 2 hr |
| Aug 20, 5:23 PM CDT | Areal Flood Advisory | MOB | Mobile | 4 hr |
| Aug 20, 6:02 PM CDT | Areal Flood Advisory | MOB | Mobile | 3 hr |
| Aug 20, 6:12 PM CDT | Special Marine Warning | MOB | 48 min | |
| Aug 20, 6:47 PM CDT | Areal Flood Advisory | MOB | Baldwin | 3 hr |
| Aug 20, 12:37 PM CDT | Special Weather Statement | MOB | Escambia | 38 min |
| Aug 20, 1:51 PM CDT | Special Weather Statement | MOB | Okaloosa | 39 min |
| Aug 20, 2:06 PM CDT | Tornado Warning | MOB | Okaloosa | 21 min |
| Aug 20, 2:25 PM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 36 min |
| Aug 19, 7:01 PM CDT | Special Weather Statement | MOB | Wayne | 59 min |
| Aug 19, 7:50 PM CDT | Special Weather Statement | MOB | Wayne | 40 min |
| Aug 20, 5:21 PM CDT | Special Weather Statement | MOB | George | 39 min |
Nearby
Areal Flood Advisories in Florida, 2021Every areal flood advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.