Weather Friday June 14 2024 IonWeather T-storm in the northeast but fair this weekend ... More south Florida rains and flooding causing Airline delays

There is a High Risk of Excessive Rainfall leading to Flash Floodingover parts of southern Florida for tonight......There are Severe weather concerns over portions of the Northern/CentralHigh Plains as well as portions of the Northeast and Mid-Atlantic onFriday......There are Excessive Heat Warnings/Watches and Advisories over SouthernCalifornia, Southwest, Central Plains, and Southern High Plains...In Florida, ongoing rounds of thunderstorm activity are expected tocontinue through Friday before subsiding just in time for the weekend. Aquasi-stationary surface front and upper trough axis swinging through theGulf of Mexico/Southeast U.S. will continue focusing tropical moistureacross the Florida peninsula over the next couple of days. Intensethunderstorms will occur tonight, when storms will bring several moreinches of rainfall, in some cases, over the very saturated and vulnerablesoils/surfaces and urban areas of southern Florida. There is now a HighRisk (at least 70%) of Excessive Rainfall leading to Flash Flooding overparts of southern Florida, particularly along the I-75 corridor fromNaples to Fort Lauderdale and down to Miami. There remains a Slight Risk(at least 15%) of Excessive Rainfall across the central-southern peninsulathrough Friday, with a Marginal Risk (at least 5%) in place throughSaturday when conditions are likely to improve.A closed mid-level low will degrade into an open shortwave trough while itswings through the Southwest and Rockies this weekend. This shortwavefeature will promote thunderstorm activity across the High Plainsbeginning Friday afternoon and continuing into the evening. The StormPrediction Center issued a Slight Risk of Severe Thunderstorms (level 2/5)over parts of eastern Colorado, southwestern Nebraska and eastern Kansas.Scattered severe storms with large hail and severe wind gusts will bepossible along the Front Range into the Central Plains Fridayafternoon/evening. A complex of storms are expected to develop overwestern Pennsylvania Friday afternoon and propagate into theNortheast/Mid-Atlantic Coast that evening.Tonight, convection is expected to flare up along a cold front pushingthrough the Midwest. Surface cyclogenesis along the front could promoteenhanced hourly rainfall rates. Thus, a Slight Risk (at least 15%) ofExcessive Rainfall leading to Flash Flooding is in effect for portions ofthe Midwest, from southeastern Iowa/northeastern Missouri acrossnorth-central Illinois and into northwestern Indiana. Totals of around aninch of rain are expected with isolated amounts closer to two inchespossible in certain spots. Excessive Heat concerns will wane over theSouthwest this weekend as the mid-level disturbance shifts into the Plainsalong with an upper ridge. The newly developing ridge over the CentralU.S. will increase Excessive Heat threats across the eastern half of thecountry heading into next week.