here is the outlook from peachtree city nws
Hydrologic Outlook
National Weather Service Peachtree City GA
229 PM EST Mon Dec 24 2018
...HEAVY RAINFALL WILL INCREASE FLASH FLOOD THREAT THURSDAY AND
FRIDAY...
.RAINFALL EXPECTED...
Forecast rainfall amounts for later this week continue to be high,
with the main concern being midday Thursday through late Friday.
Current forecast rainfall amounts for this period range between 2 to
4 inches, with isolated higher amounts, over most of north and
central Georgia. Highest rainfall amounts are expected generally
along the I-85 corridor, or along a line from LaGrange, to Atlanta,
to Gainesville, and over the higher elevations of the northeast
Georgia mountains. These rainfall amounts will increase the risk of
flash flooding and river flooding over the area. These rainfall
amounts may be conservative given the abundantly moist environment,
and subsequent forecast packages may include slightly higher
amounts.
.SYNOPSIS...
Big changes are expected in the weather pattern late week, with
ample moisture axis stretching over the southeastern U.S. by
Thursday. Forecast models differ somewhat on the duration of time
this swath of moisture remains over the area, but latest solutions
suggest this excessively wet pattern could persist well into next
week, keeping the region extremely soggy.
.ANTECEDENT CONDITIONS...
Soils are saturated from recent rainy conditions over the area, and
local creeks and rivers are currently at normal to well above normal
stream flow. Rainfall observed over the last 7 days has been 150 to
300 percent of normal. As rainfall begins to accumulate later this
week, the ability of rivers to handle increased runoff within the
channel is suppressed and could quickly result in flash flooding.
.IMPACTS...
With the expected rainfall amounts, isolated flash flooding is
expected. Periods of heavy rain can overwhelm or clog storm drains
and ditches with debris and cause extensive street flooding and road
ponding. This is especially true this time of year as fallen leaves
block or impede drainage systems. Take time ahead of the rain to
clear leaves and debris from these drainage systems.
Minor flooding of some of the larger creeks or rivers is likely
with the expected storm total rainfall amounts and should be
monitored closely. Quickly accumulating rainfall can produce
widespread minor flooding of smaller, fast-responding creeks, and
moderate flooding may be possible.
.ACTIONS...
Stay alert to changing forecasts. A Flood or Flash Flood Watch is
likely to be issued in the next day or two for large portions of
north and central Georgia. Know what to do if a Warning is issued,
particularly if you live near a creek or river.
For additional hydrologic information, visit our website at
weather.gov/atlanta. CLick on the Rivers and Lakes tab under
current weather to access the latest river state and precipitation
information.
Hydrologic Outlook
National Weather Service Peachtree City GA
229 PM EST Mon Dec 24 2018
...HEAVY RAINFALL WILL INCREASE FLASH FLOOD THREAT THURSDAY AND
FRIDAY...
.RAINFALL EXPECTED...
Forecast rainfall amounts for later this week continue to be high,
with the main concern being midday Thursday through late Friday.
Current forecast rainfall amounts for this period range between 2 to
4 inches, with isolated higher amounts, over most of north and
central Georgia. Highest rainfall amounts are expected generally
along the I-85 corridor, or along a line from LaGrange, to Atlanta,
to Gainesville, and over the higher elevations of the northeast
Georgia mountains. These rainfall amounts will increase the risk of
flash flooding and river flooding over the area. These rainfall
amounts may be conservative given the abundantly moist environment,
and subsequent forecast packages may include slightly higher
amounts.
.SYNOPSIS...
Big changes are expected in the weather pattern late week, with
ample moisture axis stretching over the southeastern U.S. by
Thursday. Forecast models differ somewhat on the duration of time
this swath of moisture remains over the area, but latest solutions
suggest this excessively wet pattern could persist well into next
week, keeping the region extremely soggy.
.ANTECEDENT CONDITIONS...
Soils are saturated from recent rainy conditions over the area, and
local creeks and rivers are currently at normal to well above normal
stream flow. Rainfall observed over the last 7 days has been 150 to
300 percent of normal. As rainfall begins to accumulate later this
week, the ability of rivers to handle increased runoff within the
channel is suppressed and could quickly result in flash flooding.
.IMPACTS...
With the expected rainfall amounts, isolated flash flooding is
expected. Periods of heavy rain can overwhelm or clog storm drains
and ditches with debris and cause extensive street flooding and road
ponding. This is especially true this time of year as fallen leaves
block or impede drainage systems. Take time ahead of the rain to
clear leaves and debris from these drainage systems.
Minor flooding of some of the larger creeks or rivers is likely
with the expected storm total rainfall amounts and should be
monitored closely. Quickly accumulating rainfall can produce
widespread minor flooding of smaller, fast-responding creeks, and
moderate flooding may be possible.
.ACTIONS...
Stay alert to changing forecasts. A Flood or Flash Flood Watch is
likely to be issued in the next day or two for large portions of
north and central Georgia. Know what to do if a Warning is issued,
particularly if you live near a creek or river.
For additional hydrologic information, visit our website at
weather.gov/atlanta. CLick on the Rivers and Lakes tab under
current weather to access the latest river state and precipitation
information.
