Flood Potential Outlook
Issued by NWS Atlanta, GA

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Hydrologic Outlook
National Weather Service Peachtree City GA
1000 AM EDT Tue Jun 20 2017

...PERIODS OF HEAVY RAIN AND ISOLATED FLASH FLOODING EXPECTED
THROUGH FRIDAY NIGHT...

.RAINFALL EXPECTED...
Storm total rainfall amounts of 3 to 6 inches are possible for
portions of north and central Georgia through Friday night.
Locally higher amounts can be expected. Periods of heavy rain will
combine with already saturated ground conditions to increase the
flash flood threat through the end of the week.

.SYNOPSIS...
A moist and unsettled pattern is expected across the forecast area
through Friday night as a weak frontal boundary remains positioned
over the area and ample tropical moisture advects into the region
from the south. Although prolonged periods of rain are expected
over the next several days, there are two time frames where the
heavy rain threat is highest. The first is today through tonight,
and generally along the I-20 corridor and southward over middle
Georgia. The second is Thursday and Thursday night as the axis of
enhanced moisture shifts northward over far north Georgia.

Additional rainfall is possible through the weekend, but amounts
remain uncertain at this time.

.ANTECEDENT CONDITIONS...
Although portions of the state have observed below normal rainfall
over the last week, drought conditions continue to improve or have
ended over the area. Rainfall over the last 48-hours,
particularly over the I-20 corridor, have been much above normal
and runoff from repeated rounds of rainfall or training showers
and thunderstorms through the end of the week could quickly result
in both rural and urban flooding.

.IMPACTS...
Isolated flash flooding will be possible if the heavy rain
repeatedly moves over the same area, or if heavy downpours result
in high rainfall amounts over a short period. Also, storm drains
and ditches may become quickly overwhelmed or clogged with debris
and cause extensive street flooding and road ponding.

Minor flooding of some of the larger creeks or rivers is more
likely with the expected storms total rainfall amounts in north
and central Georgia and should be monitored closely.

A Flash Flood Watch is in effect for portions of north and central
Georgia through 8 AM Wednesday morning. This watch may be extended
in time, or expanded in area as the event unfolds. Stay alert for
future Warnings and additional Flood Watches that may be issued
over the next several days. Know what to do if a warning is issued
and 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 stage and
precipitation information.

$$

Belanger

$$



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