UPDATE 1:22 p.m.: There is a marginal risk for severe thunderstorms this afternoon as the east and west coast sea breezes collide over northern Palm Beach County through the Treasure Coast.
The National Weather Service in Miami said the biggest concern is for dangerous lightning, but there is also a low risk of wind gusts up to 60 mph with the most robust storms.
Check The Palm Beach Post’s interactive radar before heading home from work to find out what the conditions are for your commute.
Previous story: Near record heat will descend again onto South Florida today with forecasters warning of temperatures soaring past 90 degrees from Miami through Palm Beach County.
Southwest winds from a high pressure system over the Florida Keys will pump more hot, dry air over the Peninsula, pushing the forecast temperature in West Palm Beach to 94 degrees.
That’s just two degrees below the record high of 96 set in 1945 and 4 degrees above what’s normal for this time of year.
The heat index value today could reach into the triple digits, according to the National Weather Service in Miami.
The temperature reached 90 degrees Sunday at Palm Beach International Airport, which was 5 degrees below the 2002 record. Miami and Fort Lauderdale both hit 94 degrees on Sunday.
Sunday’s 90-degree day in West Palm Beach was the first since a freak, but brief, heat wave hit South Florida in early April, driving the temperature to 90 degrees at PBIA on April 7.
Forecasters are also warning of afternoon thunderstorms as sea breezes from both coasts move inland.
Florida is unique nationally for its sea breeze-initiated thunderstorms from both coasts.
Land heats faster than water, creating a temperature difference that can be as much as 10 degrees.
The warmer, lighter air over land rises and flows toward the sea creating areas of low pressure along the coast. The atmosphere compensates by sending in the cooler, moist sea breeze.
In Palm Beach County, the Atlantic isn’t the only body of water creating a breeze. Lake Okeechobee is big enough to create a temperature difference that forces a lake breeze to kick up.
The lake breeze can crash into the Atlantic sea breeze for an atmospheric combustion only Florida can create.
Although a cool front is expected to wash out north of Lake Okeechobee mid-week, it won’t bring temperatures down much.
Daytime highs in the low 90s are forecast through Wednesday, before dipping to 88 in West Palm Beach on Thursday as rain chances increase to 40 percent.
Typical summer thunderstorm patters are expected to persist through the weekend with rain chances hovering between 20 and 30 percent Saturday and Sunday.
There is no tropical activity in the Atlantic basin expected over the next five days.
Colorado State University’s tropical meteorology project revised its April hurricane forecast last week, calling for a more normal season.
The forecast in April was for a slightly more active season than normal.
Including Alberto, CSU is now calling for 14 named storms, six hurricanes and two major hurricanes.