The following events were reported: Flood. These occurred near station USW00014734, approximately 32.2517 km away, between 2014-04-30 14:32:00 and 2014-04-30 23:59:00. The flood was caused by Heavy Rain. Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 3000000.0 and crop damage of 0.0. Episode Narrative: A slow moving low pressure system and a deep southerly flow from the Gulf of Mexico and then the Atlantic Ocean dropped heavy rain across New Jersey centered on the 30th. Event precipitation totals averaged from 3 to 6 inches, with the highest amounts in central New Jersey. This caused widespread poor drainage flooding as well as flooding of creeks and rivers throughout most of the state. Major creek and river flooding occurred in the Raritan and Assunpink Basins with moderate river flooding occurring in parts of the Passaic Basin. Many roadways were flooded. New Jersey Transit cross honored tickets on the commuter rail lines and buses. One hundred forty-six major roadways and interstates were flooded and completely closed or had lane closures throughout the state of New Jersey. Many roadways were re-opened by the end of the day on May 1st and most were opened again on May 2nd. The steady rain started during the afternoon of the 29th and fell at a steady light to moderate clip through the night. But, on the 30th the rain fell heavy at times during the morning and afternoon in the southern third of the state, and from the late morning into the evening of the 30th elsewhere in the state. Rainfall amounts of 2 inches in six hours were common. The rain ended from the south to north from around Midnight EDT to around 6 a.m. EDT on May 1st. | |The heavy rain was caused by the combination of a strong high pressure system that built over the Canadian Maritimes that initiated the onshore flow and a strong, but slow moving low pressure system. The low pressure system was located in northwest Missouri on the morning of the 29th. It moved northeast to near Chicago during the afternoon of the 29th. The low pressure system then became nearly stationary in southern Wisconsin as its cold front reached Ohio early on the 30th. Then a new low pressure system developed on the frontal boundary and was over Eastern Tennessee on the morning of the 30th. The low pressure system reached West Virginia during the late afternoon on the 30th as its warm front started to move through Delmarva. The low pressure system reached north central Maryland at 11 p.m. EDT on the 30th as its warm front reached extreme southeast Pennsylvania and central New Jersey. The low pressure system reached the Allentown, Pennsylvania area at 5 a.m. EDT on May 1st and then was absorbed again into the frontal boundary associated with the original low as it moved into New York State that morning. The steady rain ended as the low pressure system passed north of New Jersey. A slow moving low pressure system and a deep southerly flow from the Gulf of Mexico and then the Atlantic Ocean dropped heavy rain across New Jersey centered on the 30th. Event Narrative: Very heavy rain caused considerable roadway flooding in Middlesex County and also caused some brook flooding within the county. Flooding also occurred along the Raritan River. A few of the crests were the highest since Tropical Storm Irene on August 28, 2011. Nearly every major roadway in the county had flooding and many of them were closed. U.S. Route 1 was closed in both directions in South Brunswick Township. New Jersey State Route 28 was closed in two locations in Middlesex Borough. New Jersey State Route 33 was closed in Monroe Township. New Jersey State Route 18 was closed in New Brunswick. New Jersey State Route 171 was closed in North Brunswick and a sink hole also formed. The heavy rain forced emergency repairs on a northbound lane of the Garden State Parkway in Woodbridge.||The Lawrence Brook at Weston Mills was above its 18 foot flood stage from 705 p.m. EDT on the 30th through 830 a.m. It crested at 18.88 feet at 130 a.m. The Bound Brook at Middlesex had minor flooding and was above its 9 foot flood stage from 1010 p.m. EDT on the 30th through 923 a.m. It crested at 10.40 feet at 145 a.m. EDT on the 1st, the 6th highest crest on record and the highest since Tropical Storm Irene on August 28, 2011. The Manalapan Brook at Spotswood was above its 19 foot flood stage from 436 a.m. EDT on May 1st through 407 p.m. EDT on May 2nd. It crested at 20.31 feet at 500 p.m. EDT on the 1st, the 3rd highest crest on record and the highest since Tropical Storm Irene on August 28, 2011.||Event precipitation totals included 5.59 inches in Matawan, 5.22 inches in Edison Township, 4.97 inches in North Brunswick Township, 4.96 inches in Colonia and 4.92 inches in East Brunswick Township and Woodbridge Township. Very heavy rain caused considerable poor drainage flooding in Somerset County as well as major river flooding. Major flooding occurred along the Millstone and the main stem of the Raritan River, the worst flooding since Tropical Storm Irene on August 28th and 29th in 2011. Flooding forced the closure of U.S. Route 206 in both directions south of Brooks Boulevard and south of County Route 608 or Dukes Parkway in Hillsborough Township and westbound U.S. Route 22 at Rock Avenue in  North Plainfield. The exit ramps off of Interstate 287 at southbound exit 14 were flooded and closed in Bridgewater Township. Many other roadways were flooded and closed in the county. In Franklin, Branchburg and Bridgewater Townships alone, there were 22 roads that were flooded and closed. | |The Millstone River had major flooding and the worst flooding along the river since Tropical Storm Irene on August 28th and 29th in 2011. The Millstone River at Griggstown was above its 10 foot flood stage from 543 p.m. EDT on the 30th through 130 p.m. EDT on May 3rd. It crested at 18.56 feet at 1030 a.m. EDT on May 1st, the 7th highest crest on record. Farther downstream, the Millstone River at Blackwells Mills was above its 9 foot flood stage from 945 p.m. EDT on the 30th through 115 a.m. It crested at 15.87 feet at Noon EDT on May 1st, also the 7th highest crest on record. Farther downstream, the Millstone River at Millstone was above its 10 foot flood stage from 1120 p.m. EDT on the 30th through 1233 a.m. It crested at 16.80 feet at 1145 a.m. Farther downstream, the Millstone River at Weston was above its 11.5 foot flood stage from 1243 a.m. EDT on May 1st through 621 a.m. It crested at 16.72 feet at 1000 a.m. ||The North Branch of the Raritan River at North Branch was above its 12.3 foot flood stage from 640 p.m. EDT on the 30th through 756 a.m. It crested at 16.10 feet at 1245 a.m. EDT on May 1st, and this was historically the 7th highest crest on record. Farther downstream, the North Branch of the Raritan River at Raritan had minor flooding and was above its 10 foot flood stage from 831 p.m. EDT on the 30th through 1021 a.m. It crested at 13.29 feet at 245 a.m. EDT on May 1st, the 9th highest crest on record and the highest since Tropical Storm Irene on August 28, 2011. Farther downstream, the North Branch of the Raritan River at South Branch was above its 7 foot flood stage from 445 p.m. EDT on the 30th through 721 p.m. It crested at 13.52 feet at 215 a.m. ||The Main Stem of the Raritan River had major flooding and its worst flooding since Tropical Storm Irene on August 28, 2011. At Manville, the Raritan River was above its 14 foot flood stage from 1056 p.m. EDT on the 30th through 1220 a.m. It crested at 20.25 feet at 745 a.m. EDT on May 1st, the 9th highest crest on record. Farther downstream, the Raritan River at Bound Brook was above its 28 foot flood stage from 1117 p.m. EDT on the 30th through 445 a.m. It crested at 34.65 feet at 945 a.m. EDT on the 1st, its 7th highest crest on record. ||The Lamington River at Burnt Mills was above its 11 foot flood stage from 638 p.m. EDT on the 30th through 411 a.m. EDT on May 1st, and it crested at 13.06 feet at 1045 p.m. EDT on the 30th. The Middle Brook at Burnt Mills was above its 9.5 foot flood stage from 710 p.m. EDT through 818 p.m. It crested at 9.55 feet at 745 p.m. EDT. Farther downstream, the Middle Brook at Bound Brook was above its 11 foot flood stage from 520 a.m. EDT through 230 p.m. It crested at 12.22 feet at 930 a.m. EDT, the 5th highest crest on record and the highest since August 28, 2011. The Green Brook at Plainfield was above its 8 foot flood stage from 508 p.m. EDT on the 30th through 327 a.m. It crested at 9.92 feet at 9 p.m. The Bound Brook at Middlesex Borough had minor flooding and was above its 9 foot flood stage from 1010 p.m. EDT on May 1st, the 6th highest crest on record and the highest since Tropical Storm Irene on August 28, 2011. The Stony Brook at North Plainfield was briefly above its 7 foot flood stage from 722 p.m. EDT through 746 p.m. It crested at 7.05 feet at 730 p.m. EDT.||Event precipitation totals included 5.29 inches in Greenbrook Township, 5.02 inches in Warren Township, 4.72 inches in Franklin Township, 4.59 inches in Bridgewater Township and 4.52 inches in Montgomery Township. Heavy rain caused poor drainage flooding in Hunterdon County and river flooding in the eastern part of the county. In Raritan Township, access to 50 homes was cut off for several hours after the Black River flooded near the Copper Hill Country Club. A woman was rescued from Neshanic River flooding in East Amwell Township. Route 22 was closed in Readington Township due to the flooding. Other major roadways that were flooded and closed included County Route 629 in Readington, Hampton Corner Road in Raritan and Hamden Road in Franklin. The Neshanic River at Reaville was above its 6.5 foot flood stage from 332  p.m. EDT on the 30th through 401 a.m. EDT on the 1st. It crested at 11.46 feet at 830 p.m. It was the 7th highest crest on record and the highest since Tropical Storm Irene on August 28, 2011. The South Branch of the Raritan River at Stanton had minor flooding and was above its 8 foot flood stage from 100 a.m. EDT through 202 p.m. It crested at 8.71 feet at 700 a.m. EDT on May 1st.||Event precipitation totals included 5.93 inches in Tewksbury Township, 5.08 inches in Lebanon, 5.00 inches in Whitehouse Station, 4.68 inches in Readington, 4.59 inches in Flemington and Clinton and 4.58 inches in Franklin Township. Very heavy rain caused poor drainage flooding as well as minor to moderate flooding in the Passaic Basin. Some of the flooding along the Passaic River did not start until May 1st. That flood information is included below and will be repeated in May's stormdata entry. In Roxbury Township, the exit ramps in both directions off of U.S. Route 46 were flooded and closed. The heavy rain forced emergency repair lane closures on Interstate 287 in Parsippany-Troy Hills and Morristown. Mass transit was not immune. Service was suspended along a section of New Jersey Transit's Montclair-Boonton Line until May 5th as workers repaired a track washout. Buses were made available to shuttle passengers between Montclair State University and Denville. The flooding washed away the stones that support the rails between Boonton and Towaco stations early on May 1st. The Passaic River flooded sections of Long Hill Township and Chatham. Some roadways remained closed into May 2nd. ||The Passaic River at Chatham had minor flooding and was above its 6 foot flood stage from 637 p.m. EDT on the 30th through 515 a.m. It crested at 6.46 feet at 815 p.m. on the 30th. The Pequannock River at the Macopin Dam had minor flooding and was above its 5.5 foot flood stage from 1120 p.m. EDT on the 30th through 1130 a.m. It crested at 6.07 feet at 155 p.m. The Whippany River at Morristown had minor flooding and was above its 6 foot flood stage from 711 p.m. EDT on the 30th and 700 a.m. It crested at 6.37 feet at 1100 p.m. EDT on April 30th. ||In May, the Passaic River at Millington had minor flooding and was above its 8 foot flood stage from 7 a.m. EDT on May 1st through 445 a.m. It crested at 8.24 feet at 730 p.m. The Passaic River at Chatham had a second round of minor flooding with a slightly lower crest. The river was above its 6 foot flood stage from 130 p.m. EDT on May 1st through Noon EDT on May 4th. It crested at 6.34 feet at 600 a.m. The Passaic River at Pine Brook had moderate flooding and was above its 19 foot flood stage from 120 p.m. EDT on May 1st through 845 a.m. EDT on May 6th. It crested at 20.23 feet at 300 p.m. Lastly, the Passaic River at Two Bridges had minor flooding and was above its 9 foot flood stage from 345 p.m. EDT on May 1st through 730 a.m. It crested at 10.76 feet at 330 a.m. The Rockaway River below the Boonton Reservoir had minor flooding and was above its 5 foot flood stage from 120 a.m. EDT on May 1st through 300 a.m. EDT on May 3rd . It crested at 6.62 feet at 330 p.m. EDT on the 1st.||Event precipitation totals included 4.89 inches in Chatham, 4.74 inches in Florham Park, 4.70 inches in Madison, 4.58 inches in Chester Township, 4.56 inches in Long Hill Township and 4.53 inches in Morris Township.