Tropical Storm Bertha: Florida floods before landfall

Updated: NHC 8 PM EDT Monday, July 20, 2026 advisory

Tropical Storm Bertha formed Monday night over the northeastern Gulf of America, about 110 miles south of Panama City and 190 miles southeast of Mobile, Alabama. Maximum sustained winds are 40 mph with higher gusts. Bertha is moving west-northwest at 3 mph.

A tropical storm watch is in effect from Florida’s Ochlockonee River west to the Jefferson/Plaquemines Parish border in Louisiana. A storm surge watch covers the Alabama-Florida border to the mouth of the Mississippi River. The system is forecast to organize slowly through Tuesday, with some strengthening possible — though dry air and hostile upper-level winds over the Gulf may keep it from strengthening markedly.

For Florida homeowners, the headline is not the wind speed. It is the rain and surge that arrive before any landfall, before any warning escalates, and before the forecast track firms up. Tropical Storm Bertha is already a Florida storm. Here is what NHC is reporting, why the impacts arrive ahead of the cone, and what Florida homeowners should do in the next 24 to 48 hours.

What the NHC’s 8 PM EDT Monday advisory says about Tropical Storm Bertha

Per the National Hurricane Center’s active cyclones page, the 8 PM EDT Monday, July 20 advisory places Tropical Storm Bertha about 110 miles south of Panama City, moving west-northwest at 3 mph. Maximum sustained winds are 40 mph, with higher gusts. Tropical-storm-force winds extend up to 70 miles from the center.

Key watches and warnings:

• Tropical storm watch from Florida’s Ochlockonee River west to the Jefferson/Plaquemines Parish border in Louisiana.
• Storm surge watch from the Alabama-Florida border to the mouth of the Mississippi River.

Florida counties under the tropical storm watch: Bay, Escambia, Franklin, Gulf, Okaloosa, Santa Rosa, and Walton — the western Panhandle coast.

The NHC forecast calls for some strengthening through Tuesday. Dry air and unfavorable upper-level winds are likely to cap further intensification, but the storm is forecast to remain at tropical-storm strength as it tracks near or along the northern Gulf coast.

The NHC updates advisories every six hours. The next informative update will incorporate any overnight Air Force Reserve reconnaissance data and the Tuesday morning model cycle.

Why Tropical Storm Bertha still floods Florida at 40 mph

Heavy rain arrives before the center does

Tropical Storm Bertha’s rain shield extends well beyond the 70-mile wind radius. Outer bands can and do drop several inches of rain hours before the storm center makes its closest approach — and that rain falls on ground that does not need a landfall event to be saturated. Mid-July in Florida is hot, humid, and already wet. When an organized tropical system adds three to six inches of rain on top of saturated soil, runoff has nowhere to go. Streets flood. Storm drains back up. Low-elevation homes take on water.

Storm surge is not the same as the cone

The NHC cone shows the forecast track of the center. Storm surge is a separate product: it depends on the storm’s angle of approach, the bathymetry of the shallow Gulf shelf, and the shape of the coastline. The current storm surge watch covers 2 to 4 feet of surge from the mouth of the Mississippi River in Louisiana to the Alabama-Florida border, and 1 to 3 feet along Indian Pass to Chassahowitzka, Florida. One to three feet of surge is enough to push Gulf water into ground-level living space on already-flood-prone properties, even without a direct landfall on the Florida coast.

Wind is not the headline for most Florida homes

At 40 mph sustained winds, Bertha is below the threshold for structural roof damage to a code-built Florida home. The headline risk is water — rain, surge, and the flash flooding the National Hurricane Center has flagged through Friday on the Gulf Coast, including for western Florida north of Fort Myers. The damage profile of a 40-mph tropical storm is dominated by water intrusion. Water is the damage profile that costs Florida homeowners the most.

A few isolated tornadoes change the picture

The NHC notes a few isolated tornadoes are possible over Florida’s Big Bend region through Monday evening. Tropical-system tornadoes are typically short-lived and weak, but they form fast and they form on the outer rain bands, often before the storm is overhead. They are the reason tornado watches are issued for counties the cone does not directly cross.

What is happening in Florida right now

The Florida Division of Emergency Management reported Monday that outer bands of Tropical Storm Bertha are bringing heavy rain to parts of North Florida and ocean hazards to the Panhandle. Tropical-storm-force winds are possible within the Florida Panhandle watch area by late Monday — meaning tonight, not Wednesday.

South Florida — Miami-Dade, Broward, Palm Beach, and the Keys — is not in the impact corridor. The National Weather Service Miami office has confirmed South Florida will not see direct impacts from Bertha. The cone does not cross South Florida, and the storm’s rain shield is concentrated on the northern Gulf coast.

For Florida homeowners in the watch area — the western Panhandle and the Big Bend — the next 24 to 48 hours will bring heavy rain, gusty winds, storm surge along the coast, and the chance of a short-lived tornado overnight.

What changes for Florida homeowners now

As of the 8 PM EDT Monday advisory, the tropical storm and storm surge watches are in effect. Tropical-storm-force winds are possible within the watch area within 48 hours, and a few isolated tornadoes are possible through Monday evening over the Big Bend. None of these products require a forecast to firm up — they trigger on the conditions NHC is observing now.

The next 24 to 48 hours are the window for Florida storm prep actions. After that window, the storm conditions make outside-the-house work unsafe. The earlier the prep happens, the more options are available when water arrives.

Florida storm prep: what to do in the next 24 to 48 hours

This is the back-third “what to do about it” bridge. The forecast will tighten overnight. The rain is already falling on the western Panhandle.

Outside the house

• Clear gutters, downspouts, and storm drains around your property. Saturated summer soil + a clogged downspout is a recipe for foundation water intrusion.
• Bring in or secure outdoor furniture that wind can turn into projectiles.
• Test the sump pump if you have one — battery backup matters in a power outage.
• Park vehicles on high ground if your street floods in heavy rain. Even 6 to 12 inches of moving water can stall a car.
• Photograph the exterior before the rain arrives. Time-stamped images of the property’s pre-storm condition support any later documentation of damage.

Inside the house

• Move electronics, important papers, and family photos off the floor in any room that has flooded before. Drawer-level storage is not enough if water rises 6 inches or more.
• Know where your breaker panel is and how to shut off power to a wet zone safely.
• Charge phones and a battery pack. Power outages in summer storms are common and can last 12 to 48 hours.
• Stage towels, a wet vac, and plastic sheeting somewhere accessible. The first hour after water arrives is the window where homeowner action prevents structural damage.

Documentation

If water gets into your home, the documentation you create in the first 24 hours is what any later conversation about the damage references. State the facts: when the water arrived, which rooms were affected, what the water reached, and how long it sat. Time-stamped photos and videos before anything is moved.

Qlab’s certified damage reports — IICRC-format documentation, moisture mapping, and steps taken — are the source-of-truth record.

If water gets in — what the next 24 hours look like

Hour 0 — the first hour

If standing water enters the home, treat every wet surface as energized until you confirm otherwise. If you can’t reach the breaker safely, leave the wet zone and call. Move what’s moveable to a dry area and start air-drying.

Hour 1–3 — call and document

Call a Florida-licensed storm response team. Ask whether they’re IICRC-certified and whether they can start extraction the same day. Photograph the damage before cleanup.

Hour 3–24 — keep it from getting worse

Stay out of wet ceilings — a waterlogged drywall ceiling can hold more weight than it looks like until it doesn’t. Don’t run a household dehumidifier alone — a residential dehumidifier is not sized for structural drying and will run continuously without bringing the structure down to safe moisture levels. Don’t paint or patch until the structure is verified dry by meter readings. A roof leak that started at midnight can become a full hurricane damage restoration project by sunrise if the structure is closed up wet. Water damage caught early is contained; left wet for 24 hours it is structural.

If the roof is breached

A properly installed emergency roof tarp over a damaged section keeps the next round of rain from turning a contained problem into a full interior restoration. Tarping is not a fix — it is a stop.

Tropical Storm Bertha is a Florida storm right now. The wind field is small, the cone is narrow, and the forecast may shift overnight — but the rain and surge are already arriving on the western Panhandle. Florida storm prep is what you control in between.

If your Florida home is taking on water, call Qlab. Phone: (786) 746-7599. 24/7 response across Florida.

Qlab Solutions LLC is a property restoration contractor. This post is for informational purposes only and does not constitute legal, insurance, or financial advice. For such matters, consult a licensed professional.