Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 62, NWS Mobile, AL

July 24, 2017Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at Jul 24, 2017, 9:56 AM CDT for Stone County, Mississippi. It was in force for 6 hr. 7 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
Jul 24, 2017, 9:56 AM CDT (14:56 UTC)
Expired
Jul 24, 2017, 3:45 PM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

County Stone County, MS

The radar

The Mobile radar (KMOB), 93 km from the middle of the area, began a volume at 14:57 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
Jul 24, 11:45 AM CDTFLASH FLOOD2 Wnw Wiggins, MSCG EVANS RD WASHED OUT DUE TO STREET FLOODING FROM HEAVY RAIN.
Jul 24, 11:45 AM CDTFLASH FLOOD4 Wnw Wiggins, MSBRIDGE BARRICADED OFF NEAR CHANEY CREEK ON NEW HOPE RD.
Jul 24, 11:45 AM CDTFLASH FLOOD4 W Wiggins, MSVEHICLE STALLED IN HIGH WATER ON NEW HOPE ROAD NEAR CHANEY CREEK.
Jul 24, 11:45 AM CDTFLASH FLOOD6 Wnw Wiggins, MSBRIDGE BARRICADED OFF NEAR MARTIN CREEK ON NEW HOPE RD.
Jul 24, 3:15 PM CDTFLASH FLOOD2 S Wiggins, MSFLOODING AT THE PERK BEACH RV PARK SOUTH OF WIGGINS, MS
Jul 24, 3:15 PM CDTFLASH FLOOD3 E Wiggins, MSMARSHALL TAYLOR RD NEAR BIG 4 RD CLOSED NEAR BRIDGE CREEK DUE TO FLOODING.
Jul 24, 3:15 PM CDTFLASH FLOOD5 E Wiggins, MSKIRBY CREEK ROAD CLOSED AT KIRBY CREEK DUE TO FLOODING.

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, 2.9 hours before the alert went out and 75 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 2017-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2227 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, Slidell Radar S, LA at 12:00Z on 2017-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
2227 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

720 
WGUS54 KMOB 241456
FFWMOB
MSC131-242045-
/O.NEW.KMOB.FF.W.0062.170724T1456Z-170724T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
956 AM CDT MON JUL 24 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Stone County in southeastern Mississippi...

* Until 345 PM CDT

* At 953 AM CDT, Doppler radar continued to indicate showers and 
  thunderstorms producing very heavy rainfall across much of Stone 
  county. An estimated 4 to 7 inches of rain, with isolated higher 
  amounts around Wiggins has fallen this morning. Additional showers 
  and storms training over Stone county will continue to enhance the 
  potential for flash flooding. 

* Some locations that will experience flooding include...
  Wiggins, Perkinston and McHenry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3091 8934 3091 8896 3068 8897 3068 8924
      3065 8924 3065 8934

$$
1 follow-up statement
269 
WGUS74 KMOB 241704
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
1204 PM CDT MON JUL 24 2017

MSC131-242045-
/O.CON.KMOB.FF.W.0062.000000T0000Z-170724T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stone MS-
1204 PM CDT MON JUL 24 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR
STONE COUNTY...

At 1145 AM CDT, Stone county emergency management reported that C.G. 
Evans Road northwest of Wiggins had washed out due to flash 
flooding. Bridges were also barricaded off at Martin Creek and 
Chaney Creek on New Hope Road. 

At 1200 PM CDT, Doppler radar continued to detect additional showers 
and thunderstorms moving into Stone county. Radar estimates that 
widespread 4 to 8 inches of rain, with isolated amounts over 10 
inches has fallen in northwestern portions of Stone county since 
earlier this morning. Additional showers and storms moving over the 
warned area will continue to enhance ongoing flash flooding. 

Some locations that will experience flooding include...
Wiggins, Perkinston and McHenry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3091 8934 3091 8896 3068 8897 3068 8924
      3065 8924 3065 8934

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 6:32 AM CDTAreal Flood AdvisoryMOBStone3 hr
Jul 24, 7:01 AM CDTFlash Flood WarningMOBStone3 hr
Jul 24, 11:29 AM CDTFlash Flood WatchMOBGeorge, Greene, Perry, Stone, Wayne8 hr
Jul 24, 3:39 PM CDTAreal Flood WarningMOBStone6 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.