Alert archive / Alabama / Flash Flood Watches in 2018

Flash Flood Watch 4, NWS Birmingham, AL

July 31, 201828 counties in Alabama

NWS Birmingham, AL issued this flash flood watch at Jul 31, 2018, 1:43 PM CDT for 28 counties in Alabama. It took effect at Jul 31, 2018, 7:00 PM CDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
Jul 31, 2018, 1:43 PM CDT (18:43 UTC)
In effect from
Jul 31, 2018, 7:00 PM CDT
Expired
Aug 2, 2018, 2:44 AM CDT
In force
32 hr
Issued by
NWS Birmingham, AL
Flood severity
None
All 28 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Etowah County, AL, Jefferson County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL

The radar

The Maxwell AFB radar (KMXX), 54 km from the middle of the area, began a volume at 18:45 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

Birmingham, AL (KBMX), launched 12:00Z, 6.7 hours before the alert went out and 67 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, Birmingham, AL at 12:00Z on 2018-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1491 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, Birmingham, AL at 12:00Z on 2018-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 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
1491 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
749 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
1.3
Supercell composite
6.5

Open this sounding in Storm Lab

The text

As transmitted.

974 
WGUS64 KBMX 311843
FFABMX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Birmingham AL
143 PM CDT Tue Jul 31 2018

...PERIODS OF STORMY WEATHER MAY LEAD TO FLOODING ISSUES IN PARTS
OF CENTRAL ALABAMA...

.A steady stream of tropical moisture from the Gulf of Mexico, and
a series of upper level disturbances, will combine forces to bring
a several day period of off-and-on stormy weather to central
Alabama. At this time, it looks like the area most likely to get
repeated heavy rain from thunderstorms is in a band from the
Montgomery and Troy areas, northward to Anniston/Oxford and
Centre. Average rainfall amounts, through Thursday, in this area 
are expected to be between 2 and 3 inches. However, locations that
get persistent thunderstorms could receive 4 or more inches of
rain.

ALZ019>021-027>029-036>038-041>050-010245-
/O.NEW.KBMX.FF.A.0004.180801T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun-Cherokee-Cleburne-Talladega-Clay-Randolph-Coosa-
Tallapoosa-Chambers-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Anniston, Centre, Heflin, Talladega, 
Sylacauga, Ashland, Roanoke, Rockford, Alexander City, Dadeville,
Valley, Lanett, Lafayette, Prattville, Fort Deposit, Hayneville, 
Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Auburn,
Opelika, Phenix City, Troy, and Eufaula
143 PM CDT Tue Jul 31 2018

...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH
THURSDAY EVENING...

The National Weather Service in Birmingham has issued a

* Flash Flood Watch for portions of central Alabama, east 
  central Alabama, northeast Alabama, and southeast Alabama, 
  including the following areas, in central Alabama, Autauga, 
  Coosa, Elmore, Lowndes, Montgomery, and Talladega. In east 
  central Alabama, Calhoun, Chambers, Clay, Cleburne, Lee, 
  Macon, Randolph, Russell, and Tallapoosa. In northeast 
  Alabama, Cherokee. In southeast Alabama, Barbour, Bullock, and 
  Pike. 

* From 7 PM CDT this evening through Thursday evening

* Repeated heavy rain from thunderstorms expected over the next
  two days may lead to flash flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$
4 follow-up statements
144 
WGUS64 KBMX 010232
FFABMX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Birmingham AL
932 PM CDT Tue Jul 31 2018

...PERIODS OF STORMY WEATHER MAY LEAD TO FLOODING ISSUES ACROSS 
PORTIONS OF CENTRAL ALABAMA...

.A steady stream of tropical moisture from the Gulf of Mexico and
a series of upper level disturbances will combine forces to bring
a prolonged period of off and on stormy weather to Central 
Alabama. At this time, the area most likely to get repeated rounds
of heavy rain from thunderstorms is in a band from near 
Montgomery and Troy, and northward to near Anniston and Centre. 

ALZ018-025-026-035-011200-
/O.EXA.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Etowah-Shelby-St. Clair-Chilton-
Including the cities of Gadsden, Columbiana, Pelham, Alabaster, 
Pell City, Moody, and Clanton
932 PM CDT Tue Jul 31 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY EVENING...

The National Weather Service in Birmingham has expanded the

* Flash Flood Watch to include portions of Central Alabama and
  Northeast Alabama, including the following areas, in Central
  Alabama, Chilton, Shelby, and St. Clair. In Northeast Alabama, 
  Etowah. 

* Through Thursday evening.

* Repeated heavy rain from thunderstorms expected over the next
  two days may lead to periodic flash flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

ALZ019>021-027>029-036>038-041>050-011200-
/O.CON.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Calhoun-Cherokee-Cleburne-Talladega-Clay-Randolph-Coosa-
Tallapoosa-Chambers-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Anniston, Centre, Heflin, Talladega, 
Sylacauga, Ashland, Roanoke, Rockford, Alexander City, Dadeville,
Valley, Lanett, Lafayette, Prattville, Fort Deposit, Hayneville, 
Wetumpka, Tallassee, Montgomery, Tuskegee, Union Springs, Auburn,
Opelika, Phenix City, Troy, and Eufaula
932 PM CDT Tue Jul 31 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING...

The Flash Flood Watch continues for

* Portions of Central Alabama, East Central Alabama, Northeast
  Alabama, and Southeast Alabama, including the following areas,
  in Central Alabama, Autauga, Coosa, Elmore, Lowndes, Montgomery,
  and Talladega. In East Central Alabama, Calhoun, Chambers, Clay,
  Cleburne, Lee, Macon, Randolph, Russell, and Tallapoosa. In
  northeast Alabama, Cherokee. In Southeast Alabama, Barbour, 
  Bullock, and Pike. 

* Through Thursday evening.

* Repeated heavy rain from thunderstorms expected over the next
  two days may lead to flash flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

08
697 
WGUS64 KBMX 010726
FFABMX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Birmingham AL
226 AM CDT Wed Aug 1 2018

...PERIODS OF STORMY WEATHER MAY LEAD TO FLOODING ISSUES ACROSS
PORTIONS OF CENTRAL ALABAMA...

.A steady stream of tropical moisture from the Gulf of Mexico and
a series of upper level disturbances will combine forces to bring
a prolonged period of off and on stormy weather to Central
Alabama. 

ALZ017-024-033-034-040-012100-
/O.EXA.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Blount-Jefferson-Perry-Bibb-Dallas-
Including the cities of Oneonta, Birmingham, Hoover, Marion, 
Centreville, and Selma
226 AM CDT Wed Aug 1 2018

...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY EVENING...

The National Weather Service in Birmingham has expanded the

* Flash Flood Watch to include a portion of central Alabama, 
  including the following areas, Bibb, Blount, Dallas, 
  Jefferson, and Perry. 

* Through Thursday evening

* Repeated heavy rain from thunderstorms expected over the next
  two days may lead to periodic flash flooding. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

ALZ018>021-025>029-035>038-041>050-012100-
/O.CON.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Etowah-Calhoun-Cherokee-Cleburne-Shelby-St. Clair-Talladega-Clay-
Randolph-Chilton-Coosa-Tallapoosa-Chambers-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Gadsden, Anniston, Centre, Heflin, 
Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, 
Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Prattville, Fort Deposit, 
Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, 
Union Springs, Auburn, Opelika, Phenix City, Troy, and Eufaula
226 AM CDT Wed Aug 1 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING...

The Flash Flood Watch continues for

* Portions of central Alabama, east central Alabama, northeast 
  Alabama, and southeast Alabama, including the following areas, 
  in central Alabama, Autauga, Chilton, Coosa, Elmore, Lowndes, 
  Montgomery, Shelby, St. Clair, and Talladega. In east central 
  Alabama, Calhoun, Chambers, Clay, Cleburne, Lee, Macon, 
  Randolph, Russell, and Tallapoosa. In northeast Alabama, 
  Cherokee and Etowah. In southeast Alabama, Barbour, Bullock, 
  and Pike. 

* Through Thursday evening

* Repeated heavy rain from thunderstorms expected over the next
  two days may lead to flash flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$
573 
WGUS64 KBMX 012037
FFABMX

Flood Watch
National Weather Service Birmingham AL
337 PM CDT Wed Aug 1 2018

...ADDITIONAL RAINFALL MAY LEAD TO FLOODING IN EASTERN CENTRAL
ALABAMA...


ALZ017-024-033-034-040-012145-
/O.CAN.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Blount-Jefferson-Perry-Bibb-Dallas-
Including the cities of Oneonta, Birmingham, Hoover, Marion, 
Centreville, and Selma
337 PM CDT Wed Aug 1 2018

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for a portion of central Alabama has been
cancelled. While there may be additional thunderstorms in the 
west half of central Alabama over the next 24 hours, they should 
be isolated and relatively short-lived. As a result, the flash 
flood threat for this area has diminished.

$$

ALZ018>021-025>029-035>038-041>050-021200-
/O.CON.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Etowah-Calhoun-Cherokee-Cleburne-Shelby-St. Clair-Talladega-Clay-
Randolph-Chilton-Coosa-Tallapoosa-Chambers-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Gadsden, Anniston, Centre, Heflin, 
Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, 
Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Prattville, Fort Deposit, 
Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, 
Union Springs, Auburn, Opelika, Phenix City, Troy, and Eufaula
337 PM CDT Wed Aug 1 2018

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING...

The Flash Flood Watch continues for

* Portions of central Alabama, east central Alabama, northeast 
  Alabama, and southeast Alabama, including the following areas, 
  in central Alabama, Autauga, Chilton, Coosa, Elmore, Lowndes, 
  Montgomery, Shelby, St. Clair, and Talladega. In east central 
  Alabama, Calhoun, Chambers, Clay, Cleburne, Lee, Macon, 
  Randolph, Russell, and Tallapoosa. In northeast Alabama, 
  Cherokee and Etowah. In southeast Alabama, Barbour, Bullock, 
  and Pike. 

* Through Thursday evening

* More bouts of moderate to heavy rain from showers and 
  thunderstorms expected over the next 24 hours may lead to flash 
  flooding. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$
690 
WGUS64 KBMX 020744
FFABMX

Flood Watch
National Weather Service Birmingham AL
244 AM CDT Thu Aug 2 2018

ALZ018>021-025>029-035>038-041>050-020845-
/O.CAN.KBMX.FF.A.0004.000000T0000Z-180803T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Etowah-Calhoun-Cherokee-Cleburne-Shelby-St. Clair-Talladega-Clay-
Randolph-Chilton-Coosa-Tallapoosa-Chambers-Autauga-Lowndes-Elmore-
Montgomery-Macon-Bullock-Lee-Russell-Pike-Barbour-
Including the cities of Gadsden, Anniston, Centre, Heflin, 
Columbiana, Pelham, Alabaster, Pell City, Moody, Talladega, 
Sylacauga, Ashland, Roanoke, Clanton, Rockford, Alexander City, 
Dadeville, Valley, Lanett, Lafayette, Prattville, Fort Deposit, 
Hayneville, Wetumpka, Tallassee, Montgomery, Tuskegee, 
Union Springs, Auburn, Opelika, Phenix City, Troy, and Eufaula
244 AM CDT Thu Aug 2 2018

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of central Alabama, east
central Alabama, northeast Alabama, and southeast Alabama has
been cancelled. While rainfall is still expected, amounts should
not be enough pose a risk for flash flooding.

$$

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this flash flood watch went out at Jul 31, 12:55 PM CDT, 48 minutes earlier.

Area forecast discussion, Jul 31, 12:55 PM CDT, 48 minutes before
Area Forecast Discussion
National Weather Service Birmingham AL
1255 PM CDT Tue Jul 31 2018

.UPDATE...
For 18Z Aviation.

&&

.SHORT TERM...

Today through Wednesday night.

High rain chances are expected across most of the forecast area
today with the approach of a cold front and an unseasonably strong
upper-level trough. PWAT values around 2 inches should exist
generally along and southeast of Interstate 59, and this is where 80
POPs have been introduced. Currently radar depicts very little in
the way of shower activity, but convection should easily develop
later today with the aid of daytime heating. Some storms could be on
the stronger side this afternoon, perhaps with marginally severe
wind gusts, but the strongest 500mb flow seems displaced from the
expected area of greatest thunderstorm coverage.

If widespread convection occurs this afternoon, there may be a
bigger lull in activity after 7 PM than our current forecast
indicates. The GFS and ECMWF indicate synoptic-scale support for a
corridor of overnight showers and storms, but this will probably be
highly influenced by mesoscale events. Due to low forecast
confidence and the possibility of a lull, our forecast undercuts
most model guidance, with POPs at or below 50 percent after 1 AM.

The upper-level trough will weaken and become nearly stationary on
Wednesday, with deep southerly flow remaining in place across our
forecast area. Rain chances should generally be correlated with PWAT
values, ranging from 40 percent in the West to 80 percent in the
East.

87/Grantham

.LONG TERM...

Thursday and Friday.

The forward advancement of a frontal boundary will decrease and
eventually become quasistationary by Thursday morning. The upper-
level trough will have settled in over the region and continue to
provide southwesterly flow aloft, though decreasing in magnitude
through time. Given the positive tilt of the trough axis and NE/SW
orientation of the surface front, moisture availability will be
greater in our southeastern CWA where showers and thunderstorms are
likely during the afternoon/evening Thursday. Guidance indicates
PWATs as high as 2.20" in these areas, especially south of I-85.
Thus, precipitation coverage should generally decrease as you go
farther northwest where drier resides, particularly north and west
of I-20/I-59. Expect temperatures to top out in the mid to upper
80s, with drier areas seeing warmer highs. Showers and storms should
weaken and reduce in coverage overnight Thursday and could lead to
patchy fog into Friday morning.

Overall, Friday's conditions will resemble Thursday in a lot of
ways, though have decreased PoPs a bit as guidance suggests
weaker forcing. The upper-level trough should weaken and begin de-
amplification by this time as mid-level dynamics have moved off to
our east, though a relatively moist PBL will remain in place. H3
winds will remain in the 50-60 knot range and shear stratiform
rain from thunderstorms to the northeast. Forecasting a similar
geographic distribution of showers and thunderstorms during peak
heating Friday afternoon with areas generally south and east of
I-20/I-59 seeing greater probabilities. As with Thursday, not
expecting organized severe storms with convective parameters
remaining quiet. Synoptically it appears the fairly saturated
profiles, low mid-level lapse rates, and lack of wind shear keep
our overall concerns on localities receiving heavy rainfall.

Saturday through Tuesday.

The weekend will invite overall warmer conditions and lower
precipitation coverage into central AL. The upper-level trough will
continue weakening and become disconnected from the polar jet to our
north. Ridging to our east, positioned over the western
Atlantic/Bermuda, will slowly move west and build over the
southeastern CONUS. Despite mesoscale disagreement between the GFS &
ECMWF on exact placement of moisture pooling, Saturday PoPs will
remain around 50% with low-level southerly flow maintaining good
moisture availability in the area. Though, as we move ahead into
next week, this isn't the case as the ridge moves west over our
area, pushing greater southerly flow out into the plains. With lack
of flow aloft and continuing height rises, the long-term looks more
hot and humid with isolated to scattered airmass thunderstorms
during the afternoon/evening. Heat indices could approach the
century mark in some of our communities next week, especially in the
south. Highs are expected to increase to the upper 80s to lower 90s
by Sunday and continue into the work week.

40/Sizemore

&&

.AVIATION...
18Z TAF Discussion.

While the southern and eastern central Alabama terminals will be
the first to be affected by convection today, I do think that all
locations will eventually have at least one period of
thunderstorms over the next 24 hour TAF period. However, trying
to time individual thunderstorms (with accompanying lower ceilings
and visibility) will be problematic at best in this moist and
unsettled weather pattern. Will take full advantage of updates and
amendments to give some lead time, when it appears a storm is
heading for a particular location.

As for the overnight hours, models indicate most spots should see
a low cloud deck develop -- probably 1500 ft or lower, perhaps
lower than 1000 ft.

/61/

&&

.FIRE WEATHER...

Showers and thunderstorms are expected Wednesday afternoon &
evening. Higher than normal rain chances remain in the forecast
through Friday. RH values will remain higher as good moisture
resides throughout the area. Localized fog will be possible
during the morning hours where rainfall occurs during the previous
afternoon and evening. There are no fire weather concerns at this
time.

&&

.BMX WATCHES/WARNINGS/ADVISORIES/...
None.

&&
Hazardous weather outlook, Jul 31, 1:40 PM CDT, 3 minutes before
Hazardous Weather Outlook
National Weather Service Birmingham AL
140 PM CDT Tue Jul 31 2018

ALZ011>015-017>050-012145-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
140 PM CDT Tue Jul 31 2018

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms with heavy rain may produce flash flooding across
east Central Alabama, roughly along and east of a line from
Lowndesboro to Sylacauga to Centre, this evening and overnight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Flash flooding will continue to be a concern across east Central
Alabama on Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Local activation of storm spotters and emergency management may be
needed through Thursday.

In the hours before

Special weather statement, Jul 31, 1:08 PM CDT, 35 minutes before
Special Weather Statement
National Weather Service Birmingham AL
108 PM CDT TUE JUL 31 2018

ALZ046-050-311845-
Bullock AL-Barbour AL-
108 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL BULLOCK AND CENTRAL
BARBOUR COUNTIES UNTIL 145 PM CDT...

At 108 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Boot Hill to near Gaino to near
Texasville. Movement was northeast at 25 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Midway, Clayton, Louisville, Gaino, Richards Crossroads, White Oak,
Barbour County Public Lake Dam, Millers Ford, Baker Hill, Clayton
Municipal Airport and Mount Andrew.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3173 8544 3185 8564 3215 8553 3197 8532
      3178 8522 3171 8527 3171 8541
TIME...MOT...LOC 1808Z 204DEG 21KT 3187 8555 3178 8542 3168 8538

05
Special weather statement, Jul 31, 1:10 PM CDT, 33 minutes before
Special Weather Statement
National Weather Service Birmingham AL
110 PM CDT TUE JUL 31 2018

ALZ040-311845-
Dallas AL-
110 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN DALLAS COUNTY UNTIL
145 PM CDT...

At 110 PM CDT, Doppler radar was tracking a strong thunderstorm near
Dannelly Reservoir, or 12 miles north of Camden, moving east at 10
mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Dannelly Reservoir and Crumptonia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3210 8723 3212 8724 3212 8726 3214 8725
      3215 8728 3217 8729 3216 8730 3218 8732
      3220 8732 3220 8736 3222 8737 3222 8739
      3224 8739 3230 8723 3208 8719
TIME...MOT...LOC 1810Z 273DEG 8KT 3218 8730

05
Special weather statement, Jul 31, 1:28 PM CDT, 15 minutes before
Special Weather Statement
National Weather Service Birmingham AL
128 PM CDT TUE JUL 31 2018

ALZ050-311900-
Barbour AL-
128 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BARBOUR COUNTY UNTIL 200
PM CDT...

At 128 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Spring Hill to Richards Crossroads.
Movement was northeast at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Eufaula, Clayton, Hawkinsville, Spring Hill, Gaino, Comer, Barbour
County Public Lake Dam, Osco, Richards Crossroads, White Oak, Millers
Ford, Batesville, Lugo and Baker Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3171 8541 3200 8552 3201 8551 3201 8547
      3202 8547 3202 8543 3212 8543 3215 8538
      3215 8526 3206 8518 3188 8513 3186 8514
      3179 8513 3178 8514 3176 8513 3177 8515
      3174 8521 3170 8522
TIME...MOT...LOC 1828Z 226DEG 15KT 3208 8539 3173 8528

05
Special weather statement, Jul 31, 1:33 PM CDT, 10 minutes before
Special Weather Statement
National Weather Service Birmingham AL
133 PM CDT TUE JUL 31 2018

ALZ040-311900-
Dallas AL-
133 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DALLAS COUNTY UNTIL 200
PM CDT...

At 133 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Old Cahaba Park to 10 miles south of Central
Mills. These storms were nearly stationary.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Selma, Valley Grande, Selmont-West Selmont, Orrville, Tyler, Old
Cahaba Park, Memorial Stadium, Dannelly Reservoir, Dallas County
Horse Arena, Potter Station, Skyharbor Airport, Whites Bluff, Hazen,
Craig Field Aiport, Selma Drag Strip, Edmund Pettus Bridge, Selma
University and Crumptonia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3212 8724 3212 8726 3214 8725 3215 8728
      3217 8729 3216 8730 3218 8732 3220 8732
      3220 8736 3222 8737 3222 8739 3224 8739
      3224 8741 3254 8696 3237 8681 3235 8681
      3210 8723
TIME...MOT...LOC 1833Z 019DEG 2KT 3232 8712 3214 8739

05
Special weather statement, Jul 31, 1:37 PM CDT, 6 minutes before
Special Weather Statement
National Weather Service Birmingham AL
137 PM CDT TUE JUL 31 2018

ALZ048-050-311900-
Russell AL-Barbour AL-
137 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BARBOUR AND
SOUTHEASTERN RUSSELL COUNTIES UNTIL 200 PM CDT...

At 137 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Spring Hill to Fort Gaines. Movement was east
at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Eufaula, Hawkinsville, Lakepoint Resort State Park and Twin Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3218 8501 3213 8506 3209 8505 3206 8506
      3202 8505 3200 8507 3197 8506 3196 8509
      3194 8508 3191 8511 3190 8511 3189 8513
      3180 8513 3214 8528 3222 8496 3221 8497
      3220 8496
TIME...MOT...LOC 1837Z 254DEG 17KT 3209 8531 3162 8505

05
Special weather statement, Jul 31, 1:38 PM CDT, 5 minutes before
Special Weather Statement
National Weather Service Birmingham AL
138 PM CDT TUE JUL 31 2018

ALZ038-047-311915-
Lee AL-Chambers AL-
138 PM CDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LEE AND SOUTHWESTERN
CHAMBERS COUNTIES UNTIL 215 PM CDT...

At 138 PM CDT, Doppler radar was tracking a strong thunderstorm near
Waverly, or 7 miles northwest of Auburn, moving northeast at 15 mph.

Pea size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Auburn, Opelika, Waverly, Sturkie, Oak Bowery, West Chambers,
Loachapoka, Roxana and Mount Jefferson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3259 8563 3269 8570 3270 8568 3271 8568
      3271 8561 3273 8561 3273 8559 3278 8559
      3288 8543 3267 8529
TIME...MOT...LOC 1838Z 242DEG 14KT 3267 8558

05

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 7:48 PM CDTAreal Flood AdvisoryBMXShelby, Talladega3 hr
Jul 31, 12:34 PM CDTSpecial Weather StatementBMXBullock26 min
Jul 31, 12:46 PM CDTSpecial Weather StatementBMXMontgomery29 min
Jul 31, 12:58 PM CDTSpecial Weather StatementBMXBullock32 min
Jul 31, 1:00 PM CDTSpecial Weather StatementBMXMontgomery30 min
Jul 31, 1:08 PM CDTSpecial Weather StatementBMXBarbour37 min
Jul 31, 1:10 PM CDTSpecial Weather StatementBMXWilcox35 min
Jul 31, 1:28 PM CDTSpecial Weather StatementBMXBarbour32 min
Jul 31, 1:33 PM CDTSpecial Weather StatementBMXDallas27 min
Jul 31, 1:38 PM CDTSpecial Weather StatementBMXLee37 min
Jul 31, 2:06 PM CDTSpecial Weather StatementBMXMarengo24 min
Jul 31, 2:14 PM CDTAreal Flood AdvisoryBMXBarbour3 hr
Jul 31, 2:28 PM CDTSpecial Weather StatementBMXMarengo32 min
Jul 31, 2:51 PM CDTAreal Flood AdvisoryBMXDallas, Marengo3 hr
Jul 31, 3:35 PM CDTSpecial Weather StatementBMXCleburne25 min
Jul 31, 3:46 PM CDTAreal Flood AdvisoryBMXGreene, Hale, Marengo, Sumter3 hr
Jul 31, 3:54 PM CDTSpecial Weather StatementBMXCleburne36 min
Jul 31, 4:19 PM CDTSpecial Weather StatementBMXShelby26 min
Jul 31, 4:40 PM CDTSpecial Weather StatementBMXEtowah35 min
Jul 31, 4:45 PM CDTAreal Flood AdvisoryBMXShelby3 hr
Jul 31, 4:57 PM CDTAreal Flood AdvisoryBMXCherokee3 hr
Jul 31, 5:01 PM CDTAreal Flood AdvisoryBMXEtowah3 hr
Jul 31, 5:12 PM CDTSpecial Weather StatementBMXEtowah33 min
Jul 31, 5:28 PM CDTFlash Flood WarningBMXCherokee, Etowah4 hr
Jul 31, 5:37 PM CDTAreal Flood AdvisoryBMXChambers, Coosa, Randolph, Tallapoosa3 hr
Jul 31, 5:44 PM CDTAreal Flood AdvisoryBMXBibb3 hr
Jul 31, 6:11 PM CDTAreal Flood AdvisoryBMXJefferson, Tuscaloosa3 hr
Jul 31, 6:14 PM CDTAreal Flood AdvisoryBMXCalhoun, St. Clair3 hr
Jul 31, 6:39 PM CDTFlash Flood WarningBMXSt. Clair3 hr

Nearby

Flash Flood Watches in Alabama, 2018Every flash flood watch in 2018

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.