Alert archive / Alabama / Flash Flood Warnings in 2020

Flash Flood Warning 12, NWS Mobile, AL

June 7, 2020Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 7, 2020, 6:00 PM CDT for Mobile County, Alabama. 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
Jun 7, 2020, 6:00 PM CDT (23:00 UTC)
Expired
Jun 8, 2020, 12:00 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Mobile County, AL

The radar

The Mobile radar (KMOB), 12 km from the middle of the area, began a volume at 23:04 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
Jun 7, 10:45 PM CDTFLASH FLOOD1 N Prichard, ALWATER RESCUE ON MT. CALVARY AVE BETWEEN TAYLOR ST AND SAXON STREET DUE TO VEHICLE TRAPPED IN FLOOD WATERS. 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 12:00Z, 11.0 hours before the alert went out and 157 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 12:00Z on 2020-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2020-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.193958Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
479 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

020 
WGUS54 KMOB 072300
FFWMOB
ALC097-080500-
/O.NEW.KMOB.FF.W.0012.200607T2300Z-200608T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
600 PM CDT Sun Jun 7 2020

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Central Mobile County in southwestern Alabama...

* Until midnight CDT.

* At 556 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain moving northward into the greater metro area. This will 
  be the second round of heavy intense rainfall over an urban area. 
  Flash flooding will begin shortly and spread across the warned 
  area.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

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

* Some locations that will experience flash flooding include...
  Midtown Mobile, Downtown Mobile, Prichard, Tillmans Corner, 
  Chickasaw, Semmes, I10 And I65, Mobile Regional Airport, I65 And 
  I165, West Hill, Wheelerville, Forest Hill, Orchard, Navco, 
  Neshota, Eight Mile and Whistler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive into areas where water covers the roads. Turn around - 
don't drown!

&&

LAT...LON 3055 8808 3056 8818 3062 8827 3070 8828
      3081 8828 3077 8808 3069 8803 3066 8803
      3065 8806 3061 8806 3058 8807 3057 8809

FLASH FLOOD...RADAR INDICATED

$$

JMM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 2:35 AM CDTSpecial Marine WarningMOB115 min
Jun 7, 4:28 AM CDTSpecial Marine WarningMOB62 min
Jun 7, 5:11 AM CDTSpecial Marine WarningMOB94 min
Jun 7, 6:43 AM CDTSpecial Marine WarningMOB62 min
Jun 7, 7:45 AM CDTSpecial Marine WarningMOB45 min
Jun 7, 7:52 AM CDTTornado WarningMOBBaldwin27 min
Jun 7, 8:54 AM CDTSpecial Marine WarningMOB96 min
Jun 7, 9:27 AM CDTSpecial Marine WarningMOB93 min
Jun 7, 10:58 AM CDTSpecial Marine WarningMOB2 hr
Jun 7, 11:25 AM CDTWind AdvisoryMOBBaldwin, Choctaw, Clarke, Escambia, Mobile, Washington26 hr
Jun 7, 12:56 PM CDTSpecial Marine WarningMOB2 hr
Jun 7, 2:37 PM CDTSpecial Marine WarningMOB87 min
Jun 7, 3:15 PM CDTSpecial Marine WarningMOB60 min
Jun 7, 5:58 PM CDTSpecial Marine WarningMOB32 min
Jun 7, 6:16 PM CDTSpecial Marine WarningMOB29 min
Jun 7, 6:41 PM CDTSpecial Marine WarningMOB19 min
Jun 7, 6:52 PM CDTAreal Flood AdvisoryMOBBaldwin3 hr

Nearby

Flash Flood Warnings in Alabama, 2020Every 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.