Calamity
mediumSevere weatherCalamity Score: 46

Severe weather near Hillsborough

HunterdonUnited StatesNOAA

This alert expired on 8 August 2026 at 00:30 UTC. It is kept here as a record.

It is the 86th strongest of the 118 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 17 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Flash Flood Warning issued August 7 at 7:02PM EDT until August 7 at 8:30PM EDT by NWS Mount Holly NJ

An estimated 1,467,708 people live within 50 km of this point.

Nearby, since 12 March 2026

How we know

Confirmed by 19 independent sources, including NOAA.

Our own score for this event is 46 out of 100, at 88 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Event Data

TypeSevere weather
Severitymedium
Calamity Score (ours)46 / 100
Our confidence88%
Coordinates40.4762, -74.9125
Nearest CityHillsborough (24 km)
Population Exposed1.5M within 50 km
Impact Tiersignificant
Timestamp2026-08-07T23:02:00.000Z
Sourcehttps://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.89ea341664c82fcc85ced12b7c025fb6

Score Breakdown

35
intensity
100
population
0
cascading
18
historical

Technical Details

EventFlash Flood Warning
UrgencyImmediate
CertaintyLikely
AreaDescBurlington, NJ; Mercer, NJ; Bucks, PA; Fairfield, CT; New Haven, CT; Putnam, NY; Westchester, NY; Monmouth, NJ and 11 more areas
HeadlineFlash Flood Warning issued August 7 at 7:02PM EDT until August 7 at 8:30PM EDT by NWS Mount Holly NJ
Expires2026-08-07T20:30:00-04:00
SenderNameNWS Mount Holly NJ
HasExactCoordstrue
MergedCount14
MergedIds["noaa_urn:oid:2.49.0.1.840.0.89ea341664c82fcc85ced12b7c025fb661385d05.001.1","noaa_urn:oid:2.49.0.1.840.0.36286183260c107d047cd56ec7f0fe8927237f46.001.1","noaa_urn:oid:2.49.0.1.840.0.764cbea3cf3526402ed045619a63acc6e193a706.001.1","noaa_urn:oid:2.49.0.1.840.0.3b08cfe49cdaacf2aaf88982001e207a578af414.001.1","noaa_urn:oid:2.49.0.1.840.0.4e758e7e7f3c8bb089bafdf4bf8d9d749deb9ffd.001.1","noaa_urn:oid:2.49.0.1.840.0.65fd10dccb67061fb89ed2bc706a566693831537.001.1","noaa_urn:oid:2.49.0.1.840.0.9eb443a868d1610faaf96bb780c9e3515ea7bde0.001.1","noaa_urn:oid:2.49.0.1.840.0.073c8d8ab8b6d0956a649edc4f477e1a63bf4b17.001.1","noaa_urn:oid:2.49.0.1.840.0.90ed4d58d05ea8cf2ba4c608b25204d0a91dede0.001.1","noaa_urn:oid:2.49.0.1.840.0.72ba0b23c05c91c4ef7c8db5b3bb26786e492027.001.1","noaa_urn:oid:2.49.0.1.840.0.83aa93c62815cc4119d9278004b3f90b4d733865.001.1","noaa_urn:oid:2.49.0.1.840.0.00f1876b158b2605b030e9efc78f7513996266cf.001.1","noaa_urn:oid:2.49.0.1.840.0.f0b64bbe5a54a06e03ba5a737252cc54ea98d843.001.1","noaa_urn:oid:2.49.0.1.840.0.35e3419d77e0ecbf2e917915ab83f1e060bda2e0.001.1"]
Iem TypeSummaryF
Iem City1 SE Analomink
Iem CountyMonroe
Iem StatePA
Iem WfoPHI
Iem RemarkWater on PA-447 with both directions between Cobble Lane and Fifth Street closed.
MergedSources[{"id":"iem_D_40.460_-74.260_1786140780000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140780000,"latitude":40.46,"longitude":-74.26},{"id":"iem_D_40.600_-75.470_1786132980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786132980000,"latitude":40.6,"longitude":-75.47},{"id":"iem_F_40.980_-75.140_1786138020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786138020000,"latitude":40.98,"longitude":-75.14},{"id":"iem_G_40.160_-74.890_1786137540000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137540000,"latitude":40.16,"longitude":-74.89},{"id":"iem_F_40.180_-74.700_1786142880000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142880000,"latitude":40.18,"longitude":-74.7},{"id":"iem_D_40.720_-75.620_1786132200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786132200000,"latitude":40.72,"longitude":-75.62},{"id":"iem_F_40.990_-74.950_1786135500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786135500000,"latitude":40.99,"longitude":-74.95},{"id":"iem_F_40.470_-74.490_1786140540000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140540000,"latitude":40.47,"longitude":-74.49},{"id":"iem_D_40.610_-74.920_1786135320000","source":"iem","severity":"low","severityValue":25,"timestamp":1786135320000,"latitude":40.61,"longitude":-74.92},{"id":"iem_F_40.800_-74.920_1786135800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786135800000,"latitude":40.8,"longitude":-74.92},{"id":"iem_D_40.620_-75.550_1786132500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786132500000,"latitude":40.62,"longitude":-75.55},{"id":"iem_D_40.870_-74.950_1786134900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786134900000,"latitude":40.87,"longitude":-74.95},{"id":"iem_D_40.240_-74.280_1786140960000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140960000,"latitude":40.24,"longitude":-74.28},{"id":"iem_F_40.850_-74.830_1786136400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786136400000,"latitude":40.85,"longitude":-74.83},{"id":"iem_F_40.920_-74.810_1786136700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786136700000,"latitude":40.92,"longitude":-74.81},{"id":"iem_D_40.690_-75.590_1786132500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786132500000,"latitude":40.69,"longitude":-75.59},{"id":"iem_F_40.180_-74.670_1786142580000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142580000,"latitude":40.18,"longitude":-74.67},{"id":"iem_F_41.040_-75.210_1786135560000","source":"iem","severity":"low","severityValue":25,"timestamp":1786135560000,"latitude":41.04,"longitude":-75.21}]

Safety Information

During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.

Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Share:XLinkedIn

Calamity.live data shows a weather event with CalamityScore 46/100, near Hillsborough (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.