Tropical Depression Two strengthened to 35 mph before dawn Monday and pushed its tropical-storm watch west to the Mississippi-Alabama border. The National Hurricane Center still called it a depression. It still issued a watch, not a warning. [2]

That is the next stage after Sunday's account of a 30 mph depression and a Florida watch. The earlier article kept formation, naming, warning, landfall and measured flooding apart. Monday's archived advisories close some of those questions and preserve the rest.

At 3 a.m. UTC, before Monday's first full advisory, NHC placed the center about 155 miles south-southeast of Panama City, Florida. Winds remained 30 mph, movement was north-northwest at 3 mph, and the watch ran from the Ochlockonee River to the Florida-Alabama border. Rain of two to four inches, with local totals around eight, was already a forecast across a much broader Gulf region. [1]

Watches moved west

Advisory 4, issued at 4 a.m. Central, raised maximum sustained winds to 35 mph. Aircraft reconnaissance located the center about 120 miles south of Panama City. NHC extended the tropical-storm watch across Alabama's Gulf coast to the Mississippi border. [2]

The bulletin defined the household instruction precisely. Tropical-storm conditions were possible within the watch area during the next 24 to 48 hours. Possible is not expected. A watch gives residents time to check local warnings, transport, drainage and shelter plans; it does not announce that damaging wind has arrived.

Six hours later, advisory 5 changed the geography again. NHC issued a storm-surge watch from the Alabama-Florida border to the mouth of the Mississippi River. It extended the tropical-storm watch through the Mississippi coast and into Louisiana as far as the Jefferson-Plaquemines parish border. [3]

Those two watches covered different hazards. The surge watch meant life-threatening inundation was possible somewhere in its coastal area within 48 hours. The wind watch described where tropical-storm conditions might occur. A family inland from the coast could face rain without facing the same surge risk; a low coastal household could face tide-dependent water before an inland road did.

For people planning work, school, medication or evacuation, that geometry is the service. The question was not whether one colored outline looked alarming. It was which hazard could reach which address, during what window, and which local office would issue the next instruction.

NHC forecast two to four feet of water above ground from the mouth of the Mississippi to the Alabama-Florida border if peak surge coincided with high tide. Other listed stretches carried one-to-three-foot forecasts. [3] The condition matters. Surge varies over short distances and with the tidal cycle. The number is not a report that four feet entered a home.

Forecasts were not impacts

Advisory 5 retained a forecast of two to four inches of rain from western Florida to the middle Texas coast, with isolated totals around eight inches through Friday. It said flash flooding could occur, especially in cities. It also introduced the possibility of one or two tornadoes in Florida's Big Bend. [3]

By 4 p.m. Central, advisory 6 still described an unnamed 35 mph depression moving erratically northwest at 3 mph. The same storm-surge and tropical-storm watches remained in force. The two-to-four-foot surge forecast and rain range remained forecasts, while aircraft were due to investigate the circulation again that evening. [4]

No admitted advisory reported a flooded road, damaged house, outage, rescue or injury. Those outcomes require local gauges, emergency calls, road records and later observations. The national bulletin supplied where risk could develop and which kind of risk applied. It did not supply consequences in advance.

The rerun X search found NHC's own same-day advisory and key-message posts. They mirrored the operational record rather than providing an independent account of household action or damage. No status is embedded in this article. The platform evidence therefore adds distribution, not a separate outcome.

Midnight changed the name, not the cutoff

At 10 p.m. Central Monday, NHC named Tropical Storm Bertha, raised winds to 40 mph and issued a tropical-storm warning. In universal time, that advisory was stamped 3 a.m. on July 21, three hours beyond the edition's immutable cutoff. It cannot be moved into this article because the bulletin used a July 20 local clock.

That exclusion is not pedantry. A warning says conditions are expected, while a watch says they are possible. Naming marks a stronger classified system. Importing those later stages would erase the period in which Gulf households had expanding watch areas but no warning and no storm name.

The useful Monday record ends at advisory 6: an unnamed 35 mph depression, a tropical-storm watch from Florida into Louisiana, a storm-surge watch along part of the northern Gulf coast, and bounded forecasts for wind, water and rain. [4] Bertha belongs to the next dated record. So do landfall, measured flooding and every household consequence.

Local observations, not the forecast map, must now supply every measured consequence.

-- DARA OSEI, London