Florida, 2018Flash Flood and Flood in Florida, August 13, 2018
August 13, 2018 · NWS TAE · 6 events in 3 counties and zones
Scattered to numerous showers and thunderstorms occurred across the area. As is typical with summer storms in this part of the country, some of the storms were marginally severe with impacts to trees and power lines.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $3,000
- Crop damage
- None recorded
- Events
- 6
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.
Scattered to numerous showers and thunderstorms occurred across the area. As is typical with summer storms in this part of the country, some of the storms were marginally severe with impacts to trees and power lines.
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 Tallahassee, FL wrote its last area forecast discussion before the first event at Aug 13, 4:57 AM EST, 3 hours 3 minutes earlier.
Area forecast discussion, Aug 13, 4:57 AM EST, 3 hours 3 minutes before
Area Forecast Discussion
National Weather Service Tallahassee FL
557 AM EDT Mon Aug 13 2018
.AVIATION [Through 12Z Tuesday]...
VFR conditions and light winds are expected to prevail through the
period. However, brief periods of MVFR/IFR conditions are possible
this afternoon due to scattered showers and thunderstorms. The best
chance for seeing a storm will be at ECP, TLH, and VLD.
&&
.PREV DISCUSSION [301 AM EDT]...
.NEAR TERM [Through Today]...
The overnight analysis shows a closed upper low near Pittsburgh with
light northwest flow aloft across the local area. At the surface, a
weak frontal boundary stretches from northern Alabama across north-
central Georgia and into the Carolinas. As we head through the day,
this weak boundary is expected to drift slowly southward. Ample deep
layer moisture exists along the Gulf coast with precipitable water
values near 2 inches. Much drier air exists just north of the area.
Given the deep moisture in place with weak forcing, expect scattered
to numerous showers and thunderstorms to develop during the mid to
late afternoon hours, especially across the southern half of the
area where higher moisture exists. PoPs are forecast around 60
percent for a large part of the Florida panhandle, big bend, and far
southern Georgia with sea breeze activity. Farther north, slightly
drier air is expected to result in slightly less activity with PoPs
in the 30-50 percent range. Afternoon high temperatures in the low
to mid 90s are expected for most of the area, except upper 80s to
near 90 along the beaches.
.SHORT TERM [Tonight Through Wednesday]...
In the upper levels a trough is over the Eastern U.S. A ridge will
build in on Tuesday night. At the surface a weak stationary boundary
will remain over the region or just north of the region. There will
be plenty of low level moisture as southerly flow continues near the
surface. PW values are forecast to be 2 inches or more on Tuesday
and Wednesday. Afternoon/evening shower and thunderstorm activity
will be fairly widespread with POPs of 50 to 70 percent forecast for
most of the region. Most of the activity will dissipate shortly
after sunset. Highs will be near 90. Lows will be in the lower
70s.
.LONG TERM [Wednesday Night Through Monday]...
In the upper levels a weak ridge will be over the region until a
weak trough moves in this weekend. At the surface a weak pressure
gradient will be over the region with low pressure near the Great
Lakes and high pressure over the Atlantic. POPs will be seasonable
with 30 to 50 percent forecast everyday in the afternoon/evening.
Highs will be in the low 90s. Lows will be in the low to mid 70s.
.MARINE...
Light southwesterly winds are expected through this weekend. Seas
will be low around 1 to 2 feet. The wet pattern continues through at
least Wednesday. Thunderstorms can bring rapidly increasing winds
and seas.
.FIRE WEATHER...
Red flag conditions will not occur over the next several days with
relative humidity remaining above critical levels across the area.
.HYDROLOGY...
Most local rivers are steady or falling at this time. A few rivers
are in action stage. The wet pattern continues through at least
Wednesday with 0.5 to 1.5 inches of rain forecast through Wednesday.
The rest of the week rain chances are not as high.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not requested. However, spotters are always
encouraged to safely report significant weather conditions when they
occur by calling the office or tweeting us @NWSTallahassee.
&&
.PRELIMINARY POINT TEMPS/POPS...
Tallahassee 93 74 90 74 90 / 60 30 70 30 50
Panama City 92 76 89 76 89 / 60 20 40 30 40
Dothan 93 73 91 73 90 / 50 30 50 30 40
Albany 93 73 91 73 91 / 40 20 40 30 30
Valdosta 92 73 91 73 91 / 60 30 50 30 50
Cross City 89 74 89 74 90 / 60 30 50 20 30
Apalachicola 89 77 88 77 88 / 50 30 40 30 40
&&
.TAE WATCHES/WARNINGS/ADVISORIES...
FL...None.
GA...None.
AL...None.
GM...None.
&&
NEAR TERM...DVD
SHORT TERM...McD
LONG TERM...McD
AVIATION...DVD
MARINE...McD
FIRE WEATHER...DVD
HYDROLOGY...McD
Event by event
4 thunderstorm wind, 1 flood, 1 flash flood. Local standard time, as filed.
Flood, Taylor
- When
- August 13, 8:00 AM EST to 3:00 PM EST
- Where
- Taylor County, 3.51 mi S of Hampton Springs to 3.08 mi SW of Hampton Springs
- Cause
- Heavy Rain
- Reported by
- Social Media
- Coordinates
- 30.030, -83.660
Video of standing water on Courtney Grade Road was posted to the Taylor County EM facebook page. Radar estimates around 3.5 inches of rain in the previous 24 hours across the area. This rain on top of saturated soils resulted in minor flooding across the area in the form of areas of standing water.
Thunderstorm Wind, Washington
- When
- August 13, 2:30 PM CST
- Where
- Washington County, Ebro
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- Broadcast Media
- Coordinates
- 30.440, -85.870
Trees were blown down in the Ebro area.
Thunderstorm Wind, Bay
- When
- August 13, 2:56 PM CST
- Where
- Bay County, Lynn Haven
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- Social Media
- Coordinates
- 30.230, -85.640
A tree was uprooted in Lynn Haven.
Thunderstorm Wind, Bay
- When
- August 13, 2:56 PM CST
- Where
- Bay County, 0.28 mi NW of Lynn Haven
- Measured
- 50 kt (58 mph) estimated gust
- Property damage
- $2,000
- Reported by
- Social Media
- Coordinates
- 30.233, -85.643
Damage to fencing occurred at Cain Griffin Park in Lynn Haven.
Thunderstorm Wind, Bay
- When
- August 13, 2:56 PM CST
- Where
- Bay County, Southport
- Measured
- 50 kt (58 mph) estimated gust
- Reported by
- Social Media
- Coordinates
- 30.280, -85.640
Trees were blown down in Southport.
Flash Flood, Bay
- When
- August 13, 3:45 PM CST to 4:15 PM CST
- Where
- Bay County, 1.58 mi NNW of Dirego Park to 1.63 mi NNW of Dirego Park
- Cause
- Heavy Rain
- Property damage
- $1,000
- Reported by
- Broadcast Media
- Coordinates
- 30.202, -85.647
Several classrooms were flooded at Haney Technical Center with several other reports of flooded roads in the area. Some roads had standing water estimated up to 2.5 feet deep. Rainfall of 3-4 inches occurred in one hour across the area with one report of 2.5 inches of rain in 15 minutes. Water rose very rapidly and also receded very rapidly when the rain ended.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Flash Flooding and Flood in Pennsylvania, August 13 to 14, 2018$842,000 · 14 events
- Flash Flooding in New York, August 13, 2018$100,000 · 6 events
- Flash Flooding and Damaging Winds in Pennsylvania, August 13, 201852 kt wind · 29 events
- Flash Flood in Arizona, August 13, 2018$30,000 · 1 event
- Flash Flooding and Flooding in Kansas, August 13 to 14, 20181 injured · $5,000 · 14 events
- Flash Flood and Flood in Pennsylvania, August 13, 20181 injured · $6,000 · 1 in hail · 11 events
- Dense Fog in Virginia, August 13, 201815 events
- Flash Flooding and Flooding in Maryland, August 13, 201813 events
- Hail and Damaging Winds in Virginia, August 13, 2018$1,000 · 1 in hail · 13 events
- Hail and Damaging Winds in Maryland, August 13, 20181 in hail · 12 events
- Hail and Damaging Winds in Virginia, August 13, 20181.5 in hail · 10 events
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, August 13, 201810 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: 766122, 766123, 766124, 766125, 766126, 766127.