Alert archive / Mississippi / Flash Flood Warnings in 2017

Flash Flood Warning 29, NWS Mobile, AL

June 21, 2017George County, Stone County, Mississippi; Baldwin County, Mobile County, Alabama

NWS Mobile, AL issued this flash flood warning at Jun 21, 2017, 4:15 AM CDT for George County, Stone County, Mississippi; Baldwin County, Mobile County, Alabama. It was in force for 12 hr. 4 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
Jun 21, 2017, 4:15 AM CDT (09:15 UTC)
Expired
Jun 21, 2017, 4:15 PM CDT
In force
12 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Flood severity
None

Counties Baldwin County, AL, Mobile County, AL, George County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 40 km from the middle of the area, began a volume at 09:18 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 21, 5:00 AM CDTFLASH FLOODWsw Dauphin Island, ALANKLE DEEP WATER AT THE CORNER OF HWY 193 AND BIENVILLE BLVD ON DAUPHIN ISLAND.
Jun 21, 6:11 AM CDTFLASH FLOOD1 N Mobile Airport, ALTANNER WILLIAMS RD EAST OF THE COAST GUARD BASE HAS ALL LANES UNDERWATER DUE TO STREET FLOODING.
Jun 21, 9:30 AM CDTHEAVY RAIN 8.5Wiggins, MSCOUNTY EM IN STONE COUNTY REPORTED A STORM TOTAL RAINFALL OF 8.5 INCHES
Jun 21, 10:19 AM CDTCOASTAL FLOOD4 Ese Downtown Mobile, ALRIGHT LANE OF THE EASTBOUND HIGHWAY 90 CAUSEWAY AT THE I-10 INTERCHANGE BLOCKED 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 00:00Z, 9.3 hours before the alert went out and 185 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 2017-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 2017-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
18 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

502 
WGUS54 KMOB 210915
FFWMOB
ALC003-097-MSC039-131-211515-
/O.NEW.KMOB.FF.W.0029.170621T0915Z-170621T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
415 AM CDT WED JUN 21 2017

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Mobile County in southwestern Alabama...
  Baldwin County in southwestern Alabama...
  George County in southeastern Mississippi...
  Stone County in southeastern Mississippi...

* Until 1015 AM CDT Wednesday

* At 412 AM CDT, heavy rainfall producing thunderstorms continue 
  moving across the warned area. Doppler radar rainfall estimates 
  show widespread amounts between 2 and 4 inches have fallen since 
  mid-evening Tuesday. An additional 2 inches or more may be seen in 
  spots through mid-morning as additional thunderstorms move inland 
  from the Gulf of Mexico. Flash flooding is expected to begin 
  shortly.

* Some locations that will experience flooding include...
  Midtown Mobile, Downtown Mobile, Pensacola, Prichard, Daphne,
  Tillmans Corner, Warrington, Fairhope, Saraland, Gulf Shores, Bay
  Minette, Foley, Theodore, Chickasaw, Satsuma, Gulf Breeze, Orange
  Beach, Spanish Fort, Grand Bay and Wiggins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3074 8841 3065 8934 3091 8934 3100 8843
      3111 8843 3114 8787 3130 8771 3085 8763
      3067 8741 3051 8745 3043 8734 3028 8753
      3043 8717 3035 8716 3035 8707 3032 8721
      3033 8715 3025 8703 3022 8838

$$

Butts
2 follow-up statements
440 
WGUS74 KMOB 211104
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
604 AM CDT WED JUN 21 2017

ALC003-097-MSC039-131-211515-
/O.CON.KMOB.FF.W.0029.000000T0000Z-170621T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mobile AL-Baldwin AL-George MS-Stone MS-
604 AM CDT WED JUN 21 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR
MOBILE...BALDWIN...GEORGE AND STONE COUNTIES...

At 558 AM CDT, Doppler radar continued to indicate heavy rainfall 
from bands of thunderstorms moving onshore. One region of heavy 
rainfall was located generally along and west of US Highway 43, 
where radar indicated 1 to 3 inches of rain has already fallen. 
Aother region of heavy rainfall was located over southeastern 
Baldwin County, east of Alabama Highway 59, where 2 to 4 inches of 
rain has already fallen. 

Any additional rainfall will only exacerbate high water concerns.

Some locations that will experience flooding include...
Midtown Mobile, Downtown Mobile, Pensacola, Prichard, Daphne,
Tillmans Corner, Warrington, Fairhope, Saraland, Gulf Shores, Bay
Minette, Foley, Theodore, Chickasaw, Satsuma, Gulf Breeze, Orange
Beach, Spanish Fort, Grand Bay and Wiggins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3074 8841 3065 8934 3091 8934 3100 8843
      3111 8843 3114 8787 3130 8771 3085 8763
      3067 8741 3051 8745 3043 8734 3028 8753
      3043 8717 3035 8716 3035 8707 3032 8721
      3033 8715 3025 8703 3022 8838

$$

Butts
028 
WGUS54 KMOB 211423
FFWMOB
ALC003-097-MSC039-131-212115-
/O.EXT.KMOB.FF.W.0029.000000T0000Z-170621T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
923 AM CDT WED JUN 21 2017

The National Weather Service in Mobile has extended the

* Flash Flood Warning for...
  Mobile County in southwestern Alabama...
  Baldwin County in southwestern Alabama...
  George County in southeastern Mississippi...
  Stone County in southeastern Mississippi...

* Until 415 PM CDT Wednesday

* At 914 AM CDT, Doppler radar indicates a new round of heavy rain 
  lifting northwest up across southeast Baldwin county. Rains are 
  forecast to increase once again in areal coverage through mid 
  afternoon over the warned area. Many area rain gauges across the 
  warning area have already received upwards of between 4 and 6 
  inches of rain since Tuesday, the most of which having occurred 
  overnight. 

* Some locations that will experience flooding include...
  Midtown Mobile, Downtown Mobile, Pensacola, Prichard, Daphne,
  Tillmans Corner, Warrington, Fairhope, Saraland, Gulf Shores, Bay
  Minette, Foley, Theodore, Chickasaw, Satsuma, Gulf Breeze, Orange
  Beach, Spanish Fort, Grand Bay and Wiggins.

Additional rainfall amounts of 2 to 4 inches today will easily lead 
to runoff and additional flooding problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3074 8841 3065 8934 3091 8934 3100 8843
      3111 8843 3114 8787 3130 8771 3085 8763
      3067 8741 3051 8745 3043 8734 3028 8753
      3043 8717 3035 8716 3035 8707 3032 8721
      3033 8715 3025 8703 3022 8838

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 10:16 PM CDTFlash Flood WarningMOBGeorge, Stone6 hr
Jun 21, 9:01 AM CDTTornado WarningMOBStone37 min
Jun 21, 9:29 AM CDTRiver Flood WarningMOBPerry5 days
Jun 21, 12:35 PM CDTAreal Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne24 hr
Jun 21, 3:37 PM CDTSpecial Weather StatementMOBStone38 min
Jun 21, 3:46 PM CDTFlash Flood WarningMOBGeorge, Greene, Perry, Stone, Wayne6 hr
Jun 21, 4:03 PM CDTTornado WarningMOBGreene17 min
Jun 21, 5:51 PM CDTFlash Flood WarningMOBGreene, Wayne6 hr
Jun 20, 8:12 PM CDTSpecial Marine WarningMOB2 hr
Jun 20, 8:19 PM CDTCoastal Flood WarningMOBBaldwin, Mobile50 hr
Jun 20, 8:23 PM CDTAreal Flood AdvisoryMOBBaldwin, Mobile3 hr
Jun 20, 10:07 PM CDTSpecial Marine WarningMOB113 min
Jun 20, 11:44 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 1:43 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:12 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:47 AM CDTSpecial Marine WarningMOB118 min
Jun 21, 5:44 AM CDTSpecial Marine WarningMOB2 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia48 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia61 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia67 hr
Jun 21, 8:38 AM CDTRiver Flood WarningMOBEscambia12 days
Jun 21, 8:38 AM CDTRiver Flood WarningMOBCovington, Escambia3 days
Jun 21, 10:14 AM CDTAreal Flood AdvisoryMOBBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 4 more6 hr
Jun 21, 11:06 AM CDTFlash Flood WarningMOBButler, Conecuh, Covington, Escambia6 hr
Jun 21, 12:05 PM CDTFlash Flood WarningMOBBaldwin, Clarke, Conecuh, Escambia, Monroe, Washington6 hr
Jun 21, 2:29 PM CDTTornado WarningMOBBaldwin46 min
Jun 21, 2:44 PM CDTTornado WarningMOBEscambia30 min
Jun 21, 2:46 PM CDTTornado WarningMOBBaldwin59 min
Jun 21, 2:56 PM CDTSpecial Weather StatementMOBMobile34 min
Jun 21, 2:59 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 3:10 PM CDTTornado WarningMOBBaldwin25 min
Jun 21, 3:53 PM CDTTornado WarningMOBBaldwin52 min
Jun 21, 3:57 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 4:02 PM CDTRiver Flood WarningMOBMobile3 days
Jun 21, 4:17 PM CDTTornado WarningMOBEscambia43 min
Jun 21, 4:28 PM CDTSpecial Marine WarningMOB92 min
Jun 21, 4:52 PM CDTSevere Thunderstorm WarningMOBMobile38 min
Jun 21, 5:04 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile86 min
Jun 21, 5:42 PM CDTSpecial Marine WarningMOB63 min
Jun 21, 5:48 PM CDTSevere Thunderstorm WarningMOBBaldwin44 min
Jun 21, 5:51 PM CDTSpecial Marine WarningMOB114 min
Jun 21, 6:10 PM CDTSevere Thunderstorm WarningMOBBaldwin26 min
Jun 21, 6:43 PM CDTSpecial Marine WarningMOB2 hr
Jun 21, 6:45 PM CDTTornado WarningMOBCovington45 min

Nearby

Flash Flood Warnings in Mississippi, 2017Flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.