Alert archive / Florida / Flash Flood Warnings in 2018

Flash Flood Warning 32, NWS Mobile, AL

December 2, 2018Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama

NWS Mobile, AL issued this flash flood warning at Dec 2, 2018, 2:44 AM CST for Escambia County, Santa Rosa County, Florida; Baldwin County, Alabama. It was in force for 3 hr. 2 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
Dec 2, 2018, 2:44 AM CST (08:44 UTC)
Expired
Dec 2, 2018, 5:37 AM CST
In force
3 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Escambia County, FL, Santa Rosa County, FL

The radar

The Mobile radar (KMOB), 88 km from the middle of the area, began a volume at 08:44 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

TimeReportWhereRemark
Dec 2, 5:00 AM CSTHEAVY RAIN 7.782 E Cantonment, FLCOCORAHS STATION FL-ES-4, 1 E CANTONMENT, MEASURED 7.78 INCHES OF RAIN.
Dec 2, 5:28 AM CSTHEAVY RAIN 9.863 Ese Beulah, FLPERSONAL WEATHER STATION IN THE BEULAH AREA MEASURED 9.86 INCHES OF RAIN. REPORT VIA SOCIAL MEDIA.

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 00:00Z, 8.7 hours before the alert went out and 224 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 00:00Z on 2018-12-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1639 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2018-12-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939587897Sfc1 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
1639 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
848 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.8

Open this sounding in Storm Lab

The text

As transmitted.

325 
WGUS54 KMOB 020844
FFWMOB
ALC003-FLC033-113-021445-
/O.NEW.KMOB.FF.W.0032.181202T0844Z-181202T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
244 AM CST SUN DEC 2 2018

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Southeastern Baldwin County in southwestern Alabama...
  Central Santa Rosa County in northwestern Florida...
  South central Escambia County in northwestern Florida...

* Until 845 AM CST Sunday.

* At 243 AM CST, Doppler radar indicated numerous showers and 
  thunderstorms producing heavy rain across the warned area. 
  Additional showers and storms will train from the northern Gulf 
  into the warned area over the next few hours. Heavy rains will 
  move over already saturated grounds and areas that experienced 
  flash flooding Saturday. Flash flooding is expected to begin 
  shortly.

* Some locations that will experience flooding include...
  Pensacola, Ferry Pass, Brent, West Pensacola, Ensley, Warrington,
  Gonzalez, Gulf Shores, Foley, Pace, Milton, Orange Beach, Goulding,
  Bagdad, Lillian, Myrtle Grove, Bon Secour, Perdido Beach, Elberta
  and Point Baker.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3022 8773 3040 8774 3090 8679 3055 8680
      3039 8712 3022 8770

$$
1 follow-up statement
909 
WGUS74 KMOB 021137
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
537 AM CST SUN DEC 2 2018

ALC003-FLC033-113-021146-
/O.CAN.KMOB.FF.W.0032.000000T0000Z-181202T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baldwin AL-Santa Rosa FL-Escambia FL-
537 AM CST SUN DEC 2 2018

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN BALDWIN...CENTRAL SANTA
ROSA AND SOUTH CENTRAL ESCAMBIA COUNTIES IS CANCELLED...

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

LAT...LON 3022 8773 3040 8774 3090 8679 3055 8680
      3039 8712 3022 8770

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 1, 6:04 PM CSTRiver Flood WarningMOBOkaloosa4 days
Dec 1, 6:32 PM CSTSpecial Weather StatementMOBEscambia58 min
Dec 1, 6:44 PM CSTSpecial Weather StatementMOBSanta Rosa76 min
Dec 1, 6:51 PM CSTFlash Flood WarningMOBEscambia, Santa Rosa4 hr
Dec 1, 7:36 PM CSTSpecial Weather StatementMOBEscambia, Santa Rosa39 min
Dec 2, 12:31 AM CSTAreal Flood AdvisoryMOBOkaloosa3 hr
Dec 2, 1:52 AM CSTSpecial Weather StatementMOBEscambia, Santa Rosa38 min
Dec 2, 2:13 AM CSTSevere Thunderstorm WarningMOBEscambia, Santa Rosa47 min
Dec 2, 2:24 AM CSTSpecial Weather StatementMOBOkaloosa51 min
Dec 2, 2:59 AM CSTSpecial Weather StatementMOBEscambia, Santa Rosa46 min
Dec 2, 3:21 AM CSTSpecial Weather StatementMOBOkaloosa39 min
Dec 2, 3:53 AM CSTAreal Flood AdvisoryMOBOkaloosa, Santa Rosa3 hr
Dec 1, 6:12 PM CSTSpecial Marine WarningMOB93 min
Dec 1, 7:38 PM CSTSpecial Marine WarningMOB67 min
Dec 2, 1:06 AM CSTSpecial Marine WarningMOB54 min
Dec 2, 1:59 AM CSTSpecial Marine WarningMOB91 min
Dec 2, 2:15 AM CSTSpecial Marine WarningMOB60 min
Dec 2, 3:15 AM CSTSpecial Marine WarningMOB60 min
Dec 2, 4:17 AM CSTSpecial Marine WarningMOB58 min
Dec 2, 4:24 AM CSTSpecial Marine WarningMOB96 min
Dec 2, 5:12 AM CSTSpecial Marine WarningMOB63 min
Dec 2, 5:58 AM CSTSpecial Marine WarningMOB92 min

Nearby

Flash Flood Warnings in Florida, 2018Flash Flood Warnings in Alabama, 2018Every flash flood warning in 2018

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.