Last night's torrential downpour caused flash flooding and forced the closure of parts of the LIE in Queens and the Staten Island Railway, the NY Times reports. ("Consider galoshes," the Paper of Record helpfully suggests.) And over in Prospect Park, the heavy rains transformed a boring old staircase into a magical waterfall protecting the hidden entrance to Rivendell.

Surf's up 🏄

A photo posted by Rebecca Davis (@rebeccadavis) on

More rain will fall today, heavily at times, followed by additional rain tonight, plus some extra bonus "special features" rain tomorrow. A Flash Flood Watch remains in effect through 8 p.m. Tuesday. From the National "CAPS LOCK" Weather Service:

PERIODS OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL CONTINUE THROUGH TUESDAY AS SEVERAL DISTURBANCES TRACK ALONG A FRONTAL BOUNDARY NEAR THE LOCAL AREA.

* HEAVY RAIN WITH RAINFALL RATES AS HIGH AS 2 TO 3 INCHES PER HOUR
COULD CAUSE FLASH FLOODING...ESPECIALLY IN URBAN AND POOR
DRAINAGE AREAS...AND IN LOCATIONS THAT RECEIVED HEAVY RAIN FROM
THUNDERSTORMS ON SUNDAY. REPEATED TRAINING OF CELLS OVER THE
SAME AREAS COULD LEAD TO LOCALIZED RAINFALL AMOUNTS OVER 4
INCHES.

Great, now the city is just allowing CELLS to RETRAIN. Nice job, de Blasio! Meanwhile, in New Jersey, there's never been a better time to take the kids sewer fishin'.