Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 44, NWS Mobile, AL

June 22, 2017George County, Mississippi

NWS Mobile, AL issued this flash flood warning at Jun 22, 2017, 4:02 PM CDT for George County, Mississippi. 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 22, 2017, 4:02 PM CDT (21:02 UTC)
Expired
Jun 22, 2017, 10:00 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County George County, MS

The radar

The Mobile radar (KMOB), 55 km from the middle of the area, began a volume at 21:06 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, 9.0 hours before the alert went out and 115 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 2017-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 951 joules per kilogram.LCLEL10008507005003002001001 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, Slidell Radar S, LA at 12:00Z on 2017-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 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
951 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
287 m²/s²
Significant tornado parameter
1.2
Supercell composite
10.6

Open this sounding in Storm Lab

The text

As transmitted.

264 
WGUS54 KMOB 222102
FFWMOB
MSC039-230300-
/O.NEW.KMOB.FF.W.0044.170622T2102Z-170623T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
402 PM CDT THU JUN 22 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Western George County in southeastern Mississippi...

* Until 1000 PM CDT

* At 401 PM CDT, Doppler radar indicated thunderstorms producing 
  locally heavy rain across the warned area. Although reports 
  indicate waters have recently receded a bit, an additional one to 
  two inches of rain in the next few hours will aggravate the 
  flooding situation once again.

* Flash flooding will remain over mainly rural areas of western
  George County.

LAT...LON 3100 8881 3100 8864 3073 8869 3074 8886

$$
1 follow-up statement
437 
WGUS74 KMOB 222309
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
609 PM CDT THU JUN 22 2017

MSC039-230300-
/O.CON.KMOB.FF.W.0044.000000T0000Z-170623T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
George MS-
609 PM CDT THU JUN 22 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
WESTERN GEORGE COUNTY...

At 606 PM CDT, Doppler radar indicated that the line of 
thunderstorms with heavy rain is moving east of the warned area. 
Over the next several hours, shower and thunderstorm activity will 
lessen in coverage and the warning may be cancelled upon 
verification local water levels have receded.

Flash flooding will remain over mainly rural areas of western George
County.

LAT...LON 3100 8881 3100 8864 3073 8869 3074 8886

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 3:50 AM CDTSpecial Weather StatementMOBPerry40 min
Jun 22, 5:13 AM CDTFlash Flood WarningMOBGeorge, Greene, Perry6 hr
Jun 22, 7:40 AM CDTRiver Flood WarningMOBGreene, Wayne21 days
Jun 22, 8:03 AM CDTFlash Flood WarningMOBWayne6 hr
Jun 22, 11:06 AM CDTFlash Flood WarningMOBGeorge, Greene6 hr

Nearby

Flash Flood Warnings in Mississippi, 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.