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Northeast
Flash Flood Emergency Activated Across the Tri-State Area — NYC Subway Stations Inundated, New Jersey Declares State of Emergency
The storm threat that forecasters warned about Sunday night arrived with a vengeance Monday, turning the New York City metro area into a flash flood disaster zone by evening.
CBS New York reported Monday as a First Alert Weather Day from the outset, warning that a tropical airmass locked over the Tri-State region was capable of producing rainfall rates of one to two inches per hour. Those fears proved well-founded: Central Park recorded 2.64 inches of rain, the city's heaviest single-day total in over two years, and more than two inches fell in a single hour in parts of Manhattan.
Dramatic video spread across social media and news broadcasts showing floodwaters cascading down the stairs of multiple subway stations and surging onto platforms — the MTA was forced to suspend service on several lines as a result.
New York City Emergency Management had pre-positioned task forces and cleared catch basins in flood-prone areas ahead of the storms, but the sheer volume and intensity of the rain overwhelmed infrastructure across all five boroughs.
New Jersey Governor Phil Murphy declared a state of emergency as flooding reached waist-high in parts of Westchester County and northeastern New Jersey — a region already saturated from repeated flooding events over the previous week.
A Flood Watch remained in effect for northern and central New Jersey through 11 p.m. Monday, and the National Weather Service noted the highest rainfall risk sat squarely over the northern half of the state.
The Weather Channel reported two deaths in Plainfield, New Jersey, after a vehicle was swept away — the city's fourth weather-related fatality in less than five weeks.
JFK, LaGuardia, and Newark airports all faced ground stop orders during the evening hours, causing widespread flight cancellations and delays across the entire East Coast network.
Sources: CBS New York · NWS Mount Holly · The Weather Channel · New York City Emergency Management
Mid-Atlantic & East Coast
Slight Risk of Excessive Rainfall Extends Into the Mid-Atlantic Monday — Northern Florida and Carolina Coast Also in the Flood Threat Zone
The same slow-moving disturbance that turned the Tri-State area into a flood zone Monday night cast a wide net of rainfall risk across a significant stretch of the East Coast.
The NWS Weather Prediction Center's overnight Excessive Rainfall Discussion placed a Slight Risk for excessive rainfall across the broader mid-Atlantic states, coastal Carolinas, and northern Florida — underscoring how expansive the moisture plume was ahead of the stalled frontal boundary.
Baltimore, Washington, Richmond, and Philadelphia all saw rounds of heavy rain through the afternoon and evening, though flash flood impacts were more scattered than in New Jersey and New York, where the heaviest training storms concentrated.
The North Carolina coast and Outer Banks remained under a moderate rip current advisory as the lingering swell pattern from last week's unsettled offshore circulation persisted.
The WPC's overnight extended discussion further flagged a continued Slight Risk for portions of the coastal Southeast and the Tri-State area through mid-week as the stalled front refuses to budge. Residents across the broader mid-Atlantic should monitor forecasts closely — the flooding pattern is not over with Monday's storms.
Sources: NWS Weather Prediction Center · NWS Baltimore/Washington · Fox Weather
Florida
South Florida Runs Monday's Standard August Script — Low 90s, High Heat Indices Near 105°F, and a 70-Percent Storm Chance by Afternoon
Florida's weather machine ran predictably Monday, with South Florida's east coast metro areas of Miami-Dade, Broward, and Palm Beach counties settling into the familiar pattern of morning sun, building humidity, and afternoon thunderstorm development.
NBC 6 South Florida's First Alert team called for highs near 91°F with a 70 percent chance of storms through the day — numbers virtually identical to Sunday's.
The NWS Miami forecast showed heat index values reaching as high as 105°F along the coast, while Boca Raton and interior communities saw RealFeel temperatures climb to 106°F in direct sun.
South Florida Reporter noted that Monday's highs would remain in the low 90s but would feel much hotter, and advised residents to stay hydrated throughout the day.
The Gulf Coast side of the state saw more cloud cover and gusty onshore flow, with widespread showers and thunderstorms developing from Tampa Bay south through the Big Bend region during the afternoon and evening hours.
NWS Tampa Bay flagged numerous to widespread thunderstorms for the Gulf Coast with locally heavy rain possible. Florida's Big Bend area carried a lingering Slight Risk designation from the WPC's excessive rainfall outlook — an unusual late-summer signal for that part of the state.
The tropical Atlantic remained relatively quiet on Monday, with no active systems posing an immediate threat to Florida.
Sources: NWS Miami · NWS Tampa Bay · NBC 6 South Florida · South Florida Reporter
Southeast
Post-Frontal Dryout Arrives Along the Gulf Coast Monday — Baton Rouge and New Orleans Enjoy a Brief Respite Before Humidity Returns Midweek
The early August cold front that produced scattered to numerous storms across the Gulf Coast through the weekend finally pushed far enough south Monday to allow a noticeably drier and more pleasant air mass to settle over the region.
WAFB Baton Rouge reported that while temperatures would still climb near 90°F during the afternoon, sunshine and meaningfully lower humidity would make Monday feel quite comfortable by Louisiana summer standards — a genuine contrast to the oppressive pre-frontal conditions that preceded it.
The front stalled near the coast, so the drier air is expected to persist only through Monday at best.
Fox 10 Mobile noted that lingering morning showers from Sunday's frontal passage tapered off across south-central Alabama and the western Florida Panhandle before midday, with drying skies spreading west from Pensacola through Mobile and toward Biloxi and Gulfport as the afternoon progressed.
New Orleans and the surrounding metro area largely avoided significant Monday rainfall and saw some sunshine during the peak afternoon hours.
The reprieve, however, is short-lived: WAFB forecasters warned the frontal boundary will lift back northward Tuesday, allowing Gulf moisture and heat to return quickly, with daily afternoon storms and uncomfortable humidity making a comeback by midweek. Residents across the Gulf Coast are encouraged to make the most of Monday's comparative comfort before the summer pattern reasserts itself.
Sources: WAFB Baton Rouge · Fox 10 Mobile · NWS Mobile/Pensacola · NWS New Orleans
Midwest
Severe Storm Threat Shifts Into the Ohio Valley Monday — Damaging Winds, Large Hail, and an Isolated Tornado Possible From Michigan to West Virginia
After a destructive weekend squall line swept through Missouri and the Mississippi Valley Sunday night, the severe weather threat reorganized and pushed east into the Ohio Valley and Great Lakes on Monday.
The Storm Prediction Center issued a Slight Risk — Level 2 of 5 — for a corridor from southeastern Wisconsin through southern Michigan and into the Ohio and Tennessee Valleys, with damaging wind gusts of 58 mph or greater identified as the primary hazard.
AccuWeather meteorologist Brandon Buckingham noted that storms were forming and tracking along the northern edge of a persistent heat dome over the central U.S., where hot, humid conditions provided ample fuel for organized severe weather.
Rounds of showers and thunderstorms were expected to move across the Ohio Valley and into the Great Lakes through Monday night, with AccuWeather flagging the potential for a brief tornado from far eastern Ohio to the Buffalo, New York area.
Heavy rainfall concurrent with the storms raised flash flood concerns in a region where soils remain saturated from last week's repeated events.
Ohio agricultural forecasters noted that rain arriving in the early morning hours was producing travel slow-downs ahead of the main activity.
By Tuesday, AccuWeather said the severe weather threat would diminish as the cold front exits the region, though a few storms could still produce strong gusts before the pattern calms.
Chicago and the broader upper Midwest saw drier and somewhat cooler conditions developing behind the departing front.
Sources: NWS Storm Prediction Center · AccuWeather · Ohio Ag Net · NWS Cleveland
Texas & Oklahoma
Triple Digits Return to DFW Monday as NWS Heat Advisory Covers North Texas Through Evening — 101°F High Forecast With Heat Index Near 107
The brief weekend reprieve that kept North Texas temperatures in the upper 90s is firmly over as Monday brings triple-digit heat back to the Dallas–Fort Worth Metroplex and the rest of the state.
Fox 4 Dallas reported that DFW was forecast to hit 101°F Monday afternoon, with heat index values climbing as high as 107°F — prompting the NWS Fort Worth office to issue a Heat Advisory for most of North Texas and eastern Central Texas through 8 p.m. The advisory covers Dallas, Tarrant, Collin, Denton, and surrounding counties.
Forecasters at NWS Fort Worth cited mostly sunny skies and southerly winds of 5 to 10 mph with overnight lows remaining in the mid-70s to low 80s, offering limited overnight cooling ahead of another warm start Tuesday.
NBC 5 DFW's extended forecast shows the region locked in at 100 to 102°F through the entire week, with rain chances remaining essentially zero until a weak disturbance offers a marginal shot at relief late Friday.
NWS Fort Worth confirmed that a strong ridge of high pressure will keep afternoon temperatures hovering between 100 and 105°F daily, with additional heat advisories likely to be reissued through the workweek.
Wildfire smoke from Oregon's record-breaking 2026 fire season continues to produce hazy skies and elevated fine particle counts across parts of North Texas, compounding outdoor health risks during the heat. Residents are urged to limit outdoor activity during peak afternoon hours, stay hydrated, and check on elderly neighbors and those without reliable air conditioning.
Sources: NWS Fort Worth/Dallas · Fox 4 Dallas-Fort Worth · NBC 5 DFW · WBAP 820
Mountain West
Heat Wave Continues Across the Rockies and High Plains — Some Northern Rockies Relief Monday as Extreme Fire Danger Persists in Wyoming and Montana
The same expansive heat dome that has baked the Mountain West for over a week began showing the first hints of weakening at its northern fringes Monday, as a Pacific shortwave pushed into the Pacific Northwest and nudged temperatures down a few degrees across parts of Montana and northern Idaho.
AccuWeather and the Weather Channel noted that some heat relief would arrive in the northern Rockies by Monday, but cautioned that the Desert Southwest and Great Basin would remain in extreme heat territory through at least the first week of August.
Wyoming remained under heat advisories Monday, with temperatures ranging from the upper 80s near higher elevations to around 102°F in the lower basins around Casper — still dangerously hot, with Red Flag Fire Warnings in effect through the evening hours across much of the state. Single-digit relative humidity and gusty afternoon winds kept fire behavior analysts on high alert.
Colorado's Front Range from Denver through Colorado Springs remained at or near triple digits for another day.
The NWS Storm Prediction Center flagged isolated severe wind gusts possible across the southern High Plains and portions of the Rockies as the front pushed through.
Death Valley was forecast to hit 123°F Monday according to Eastern Sierra forecaster Dennis Mattinson, while Bishop, California, baked at 104°F and Mammoth Lakes settled near 83°F. Heat advisories from NWS Las Vegas, Denver, Bismarck, and Rapid City remained in effect, covering an enormous geographic footprint across the interior West and northern High Plains.
Sources: AccuWeather · NWS Storm Prediction Center · Sierra Wave · NWS Denver
Desert Southwest
Las Vegas at 113°F With Extreme Heat Warning Extended Through Wednesday — Phoenix Among Five Major U.S. Cities Under Extreme Heat Warnings Monday
There is no meaningful relief in sight for the Desert Southwest as Monday arrives with the same ferocious heat dome locked over the Four Corners region that made last week one of the most dangerous heat stretches on modern record.
The Las Vegas Review-Journal reported that Harry Reid International Airport hit 115°F on Saturday — the hottest day of 2026 — followed by 114°F on Sunday, and that the NWS extreme heat warning for the Las Vegas Valley was extended through 8 p.m. Wednesday.
Monday's forecast high is 113°F, with overnight lows expected to hold near 89°F, providing almost no physiological recovery window for residents without air conditioning.
Clark County has kept cooling stations open across community centers, libraries, and public buildings through at least Wednesday.
Phoenix joins Las Vegas among five major U.S. cities — including Los Angeles, Tucson, and Salt Lake City — where extreme heat warnings are in effect Monday, according to ABC News. CNN reported that the heat dome is keeping about 45 million people under some form of heat alert across the West, with triple-digit heat stretching from Las Vegas to Montana.
The Weather Channel noted that Las Vegas has now logged ten or more days at or above 110°F this summer, approaching the city's record of 11 consecutive such days set in July 2024.
Monsoon moisture continues to produce dangerous flash flooding at altitude across the Mogollon Rim, central New Mexico mountains, and portions of southern Arizona, but the valley floors remain in extreme heat danger with no meaningful precipitation expected through mid-week.
Sources: Las Vegas Review-Journal · NWS Las Vegas · NWS Phoenix · ABC News · CNN · The Weather Channel
California
Death Valley Expected Near 123°F Monday as Interior Valley Heat Holds at 104°F — Wildfire Smoke Blankets Northern California
California offers little escape from the heat gripping the western United States on Monday, with Death Valley forecast to reach 123°F and interior valleys from Redding south through Bakersfield locked in at 103 to 108°F under relentless sunshine.
Nighttime lows in Death Valley are expected to hover around 96°F all week, giving residents and visitors no meaningful overnight recovery.
The coastal marine layer is providing modest relief along the immediate shoreline — Los Angeles beaches and Bay Area coastal communities were forecast in the mid-to-upper 80s Monday — but these conditions mask the extreme heat just miles inland.
Extreme Heat Warnings and Heat Advisories remain in effect for the vast majority of the state's population.
The wildfire smoke situation continues to worsen: Oregon's record-shattering 2026 fire season has now burned 1.978 million acres as of August 2, surpassing the all-time state record set in 2024 with nearly two months of fire season still remaining.
Smoke from Oregon's active fires continues to pour south, blanketing Northern California and the Sierra Nevada foothills with Unhealthy to Very Unhealthy AQI readings across much of the northern third of the state.
Cooling centers statewide remain open and at or near capacity. California residents are urged to combine heat and air quality precautions — drinking water and avoiding outdoor exertion is especially critical on days when both extreme heat and smoke are present simultaneously.
Sources: NWS Los Angeles · NWS Sacramento · Sierra Wave · NOAA · AP
Pacific Northwest
Oregon's 2026 Wildfire Season Shatters the All-Time Modern Record — 1.978 Million Acres Burned as of August 2, With Fire Season Far From Over
Oregon's catastrophic 2026 wildfire season crossed a historic threshold on August 2 when it surpassed the previous all-time state acreage record of 1.93 million acres set during the devastating 2024 season — and with nearly two months of fire season remaining.
Central Oregon Daily reported the state's 60 large fires have now blackened 1.978 million acres, based on data from the Northwest Coordination Center.
The Shingle Fire in Wheeler County reached 67,416 acres by August 3 at only 16 percent containment, having gained just six percentage points of containment in the latest reporting cycle according to FireRisk.ai data sourced from the National Interagency Fire Center.
The Rowe Creek Complex remained enormous at 313,439 acres with containment at 55 percent; the Hay Creek Complex had reached near 98 percent containment after burning more than 200,000 acres.
A rapidly escalating series of lightning storms across central and southern Oregon over the past two weeks drove the sharp acceleration, with naturally caused fires accounting for the overwhelming share of acreage.
A fast-moving wildfire in Spokane County, Washington, added to the regional toll Sunday, burning more than 5,000 acres and prompting evacuations. The Trump administration has denied federal firefighting assistance grants for two of the season's most significant Oregon fires despite approving grants for others requested by Gov. Kotek — a decision Oregon's congressional delegation has called inadequate given the historic scope of the crisis.
Oregon's massive smoke plume continues to blanket an area stretching from the Pacific Northwest east to the northern High Plains and south into Texas.
Sources: Central Oregon Daily · KGW · FireRisk.ai · IQAir · NWS Portland · AP