Alert archive / Alabama / Flash Flood Warnings in 2017

Flash Flood Warning 19, NWS Mobile, AL

June 6, 2017Clarke County, Monroe County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 6, 2017, 5:27 PM CDT for Clarke County, Monroe County, Alabama. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 6, 2017, 5:27 PM CDT (22:27 UTC)
Expired
Jun 6, 2017, 11:30 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Clarke County, AL, Monroe County, AL

The radar

The Mobile radar (KMOB), 131 km from the middle of the area, began a volume at 22:27 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

Jackson, MS (KJAN), launched 12:00Z, 10.5 hours before the alert went out and 267 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, Jackson, MS at 12:00Z on 2017-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 825 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2017-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 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
825 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

497 
WGUS54 KMOB 062227
FFWMOB
ALC025-099-070430-
/O.NEW.KMOB.FF.W.0019.170606T2227Z-170607T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
527 PM CDT TUE JUN 6 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Central Monroe County in south central Alabama...
  East central Clarke County in southwestern Alabama...

* Until 1130 PM CDT Tuesday

* At 527 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Monroeville, Frisco City, Peterman and Beatrice. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3176 8720 3150 8718 3135 8763 3162 8767

$$
1 follow-up statement
450 
WGUS74 KMOB 070420
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1120 PM CDT TUE JUN 6 2017

ALC025-099-070430-
/O.EXP.KMOB.FF.W.0019.000000T0000Z-170607T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe AL-Clarke AL-
1120 PM CDT TUE JUN 6 2017

...THE FLASH FLOOD WARNING FOR CENTRAL MONROE AND EAST CENTRAL CLARKE
COUNTIES WILL EXPIRE AT 1130 PM CDT...

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

LAT...LON 3176 8720 3150 8718 3135 8763 3162 8767

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 5:36 AM CDTRip Current StatementMOBBaldwin, Mobile37 hr
Jun 6, 4:31 PM CDTAreal Flood AdvisoryMOBMobile3 hr

Nearby

Flash Flood Warnings in Alabama, 2017Every flash flood warning in 2017

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.