Georgia, 2020Flood in Georgia, March 1, 2020
March 1, 2020 · NWS JAX · 1 event in 1 county or zone
Above normal rainfall across north and central GA during late February combined with a couple of waves of locally heavy rainfall across the Altamaha River basin created an extended Moderate River flood event.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Above normal rainfall across north and central GA during late February combined with a couple of waves of locally heavy rainfall across the Altamaha River basin created an extended Moderate River flood event.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before the first event at Mar 1, 4:13 PM EST, 17 minutes earlier.
Area forecast discussion, Mar 1, 4:13 PM EST, 17 minutes before
Area Forecast Discussion
National Weather Service Jacksonville FL
413 PM EST Sun Mar 1 2020
...SIGNIFICANT WARMING TREND THROUGH MIDWEEK...
...STRONG TO SEVERE THUNDERSTORMS POSSIBLE ON THURSDAY...
.CURRENTLY...
Late afternoon surface analysis depicts high pressure (1029
millibars) centered over coastal portions of the Carolinas.
Aloft...zonal flow now prevails locally as troughing has exited
into the western Atlantic waters, with a 150 knot jet streak over
the Red River Valley of northern Texas nosing across the northern
Gulf of Mexico spreading a veil of thin cirrus quickly eastward
across the southeastern states. Low level winds have veered to
south-southeasterly throughout our region, but a very dry air mass
prevails this afternoon, with dewpoints at 21Z still in the 25-30
degree range inland and 30-35 at coastal locations. Full sunshine
and the dry air mass have allowed high temperatures at inland
locations to reach the 65-70 degree range, with a light onshore
breeze keeping coastal highs generally in the lower 60s this
afternoon.
.NEAR TERM [Through Monday]...
Cirrus cloud cover will gradually thicken from west to east
after midnight as the aforementioned jet streak continues to nose
into our region from the west. Otherwise, surface winds at inland
locations will quickly decouple early this evening, with a light
south-southeast breeze at coastal locations keeping lows around
50, while inland locations fall mostly to the low to mid 40s.
A significant warming trend will commence on Monday as low level
flow veers to southerly, with our local pressure gradient
gradually tightening as weak low pressure takes shape along a
frontal boundary near the Arklatex region. Fast zonal flow aloft
will prevail, with an embedded shortwave trough moving across the
lower Mississippi Valley potentially tapping enough moisture to
develop isolated to widely scattered showers towards sunset for
locations along and west of U.S. Highway 84 in southeast Georgia
and also the northern Suwannee Valley in north Florida. Highs will
reach the low to mid 70s region-wide, except upper 60s for coastal
southeast Georgia.
.SHORT TERM [Monday Night Through Wednesday Night]...
Widely scattered showers are expected to develop over locations
north of Interstate 10 on Monday night and Tuesday morning as warm
frontogenesis takes shape. Light southerly winds and increasing
cloud cover will keep lows mostly in the 55-60 degree range
throughout our area. Shower activity will then slowly lift
northward on Tuesday and Tuesday night as weak shortwave troughs
continue to migrate across the southeastern states within a
persistently fast zonal flow pattern downstream of a closed trough
aloft that will be pivoting across northern Mexico and the Desert
Southwest. Breezy southwesterly winds will boost highs to the
75-80 degree range area-wide on Tuesday, with a few lower 80s
possible in north central Florida.
Fog and low stratus clouds will develop late Tuesday night as a
warm air advection pattern persists, keeping lows mostly in the
lower 60s. The wavy frontal boundary in place over the
southeastern states will then stall near the Altamaha and Ocmulgee
River on Wednesday, focusing scattered to numerous afternoon
showers and a few embedded thunderstorms for locations northwest
of Waycross, while isolated convection may develop towards evening
as far south as the Interstate 10 corridor. Increasing cloudiness
will keep highs on Wednesday just below 80 for locations north of
Waycross, ranging to the mid and upper 80s for north central
Florida.
Closed troughing will pivot east-northeastward across central and
northeast Texas on Wednesday afternoon and evening, resulting in
cyclogenesis along the upper Texas coast. This low pressure center
will migrate along the northern Gulf coast states Wednesday night
and should approach western portions of the Florida panhandle
towards sunrise on Thursday. Deeper moisture will overspread our
region from southwest to northeast on Wednesday night, with
numerous showers and a few embedded thunderstorms over southeast
Georgia, the Suwannee Valley and along the I-10 corridor, with
scattered convection possible towards sunrise elsewhere for
coastal northeast and north central Florida. Lows Wednesday night
will only fall to the low to mid 60s.
.LONG TERM [Thursday Through Sunday]...
Closed upper troughing will open into a potent shortwave trough as
it traverses the southeastern states on Thursday, moving offshore
of the Carolinas by late Thursday night. Low pressure centered
over the western Florida panhandle early on Thursday morning will
continue on an east-northeast trajectory across southeast Georgia
during the afternoon hours, placing northeast and north central
Florida within the warm sector during the afternoon hours.
Operational GFS guidance continues to come into better agreement
with the operational ECMWF solution, which increases the threat
for strong to severe thunderstorms to impact locations along and
south of the I-10 corridor during the afternoon hours as
impressive southwesterly speed shear overspreads our area. The
Storm Prediction Center has already placed our area within severe
weather probabilities (15%) for Thursday. Locally heavy rainfall
will also be possible closer to the surface low across much of
southeast Georgia, and widespread heavy rainfall across the
southeastern states this week may eventually exacerbate ongoing
river flooding for the main stem rivers in southeast Georgia such
as the Ocmulgee, Altamaha and Satilla Rivers. High temperatures on
Thursday will range from near 70 along the Altamaha River to the
mid 80s in north central Florida.
Low pressure will exit the southeast Georgia coastline on Thursday
evening, with this system's cold front pushing southward through
the Florida peninsula and cool air advection arriving overnight in
southeast Georgia, where lows will fall into the 40s on the heels
of breezy northwesterly winds. Troughing aloft will then gradually
dig along the U.S. eastern seaboard into early portions of the
weekend as a strong surface ridge over the Great Lakes and Ohio
Valley builds into the southeastern states. Temperatures will fall
below climatology, with frost and a potential light freeze next
weekend for inland southeast Georgia.
&&
.MARINE...
High pressure centered along the Carolina coast will shift
eastward over the western Atlantic waters this evening. Southerly
winds will gradually strengthen on Monday well in advance of a
frontal boundary that will gradually push into the southeastern
states through midweek, with Caution conditions developing
offshore by Monday evening and continuing through at least Tuesday
evening as sustained winds reach 15-20 knots. Seas will build to
3-5 feet offshore and will remain 2-4 feet near shore. Low
pressure will develop along the Texas Gulf coast by midweek and
then move east-northeastward across our region on Thursday.
Southwesterly winds will strengthen on Thursday, with increasing
chances for showers and a few strong thunderstorms accompanied by
building seas. Small Craft Advisory level seas are forecast
offshore beginning on Thursday. Strong northwesterly winds are
expected following the passage of this storm system on Thursday
night and Friday, with Caution conditions expected near shore and
Small Craft Advisory conditions prevailing offshore.
&&
.FIRE WEATHER...
A very dry air mass will remain in place through Monday morning.
Long durations of critically low humidity values will prevail
area-wide except at coastal locations through sunset this evening.
Southeasterly surface and transport winds will begin to gradually
increase around sunrise and will quickly shift to southerly by
the mid-morning hours on Monday. These strengthening winds will
combine with rising mixing heights and warmer temperatures to
create marginally high dispersion values area-wide on Monday
afternoon. Minimum relative humidity values will fall to around
40 percent along the U.S. Highway 301 corridor on Monday
afternoon, with higher values elsewhere. Breezy southwesterly
surface and transport winds are forecast for Tuesday.
&&
.HYDROLOGY...
Runoff from heavy rainfall during the past month over central and
northern Georgia continues to be routed southeastward through the
main stem rivers in southeast Georgia. Moderate flooding
continues along all of the Altamaha River, with falling levels
near Charlotteville and Baxley and a crest recently occurring at
Doctortown. A crest is forecast early this week for downstream
locations such as Doctortown. Minor flooding continues along
portions of the Satilla, Alabaha and Little Satilla Rivers.
Additional heavy rainfall throughout the southeastern states this
week will likely result in another significant flood wave
working its way through the main stem rivers next weekend and
beyond.
&&
.PRELIMINARY POINT TEMPS/POPS...
AMG 41 72 57 76 61 / 0 30 40 30 30
SSI 50 68 58 75 61 / 0 20 30 20 10
JAX 43 76 58 80 61 / 0 10 20 20 10
SGJ 51 74 60 80 62 / 0 10 20 10 0
GNV 44 75 57 79 62 / 0 10 20 10 0
OCF 45 75 56 80 61 / 0 10 10 10 0
&&
.JAX WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AM...None.
&&
Flood, Glynn
- When
- March 1, 4:30 PM EST
- Where
- Glynn County, 3.14 mi NE of Everett to 2.75 mi NE of Everett
- Cause
- Heavy Rain
- Reported by
- Broadcast Media
- Coordinates
- 31.430, -81.610
Flooding along the Altamaha River caused water to enter homes. At the time of this report the Everett City stage was 16.19 ft. The record stage for this site is 16.8 ft and Major flooding begins at 17.0 ft.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Flood in Pennsylvania, March 1 to 31, 2020$5.0 million · 1 event
- Flood in Ohio, March 1 to 31, 2020$5.0 million · 1 event
- Drought in Texas, March 1 to 31, 202024 events
- Flash Flooding and Flooding in Missouri, March 1 to 2, 2020$2,000 · 2.25 in hail · 24 events
- High Wind in North Dakota, March 1, 202058 kt wind · 21 events
- Flood in Illinois, March 1 to 31, 2020$20,000 · 1 event
- Flooding in South Dakota, March 1 to 31, 202010 events
- Drought in Texas, March 1 to 31, 20208 events
- High Surf in Hawaii, March 1 to 4, 20208 events
- Drought in Texas, March 1 to 31, 20207 events
- Heavy Snow and High Wind in California, March 1 to 3, 202057 kt wind · 7 events
- Flooding in Arkansas, March 1 to 31, 20206 events
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 872076.