Alert archive / Massachusetts / Flood Watches in 2025
Flood Watch 5, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flood watch at Jul 10, 2025, 2:10 AM EDT for 7 counties in Massachusetts; 5 counties in Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 10, 2025, 2:10 AM EDT (06:10 UTC)
- Expired
- Jul 10, 2025, 10:17 AM EDT
- In force
- 8 hr
- Issued by
- NWS Boston/Norton, MA
- Flood severity
- None
Counties Northeastern Connecticut Planning Region, CT, Bristol County, MA, Essex County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 18 km from the middle of the area, began a volume at 06:13 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 6.2 hours before the alert went out and 177 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 340 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1139 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.7
What forecasters said that day
The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this flood watch went out at Jul 10, 1:13 AM EDT, 57 minutes earlier.
Area forecast discussion, Jul 10, 1:13 AM EDT, 57 minutes before
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</html>The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 2:43 AM EDT | Special Marine Warning | BOX | 62 min | |
| Jul 10, 6:01 AM EDT | Flash Flood Warning | BOX | Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 3 hr |
| Jul 10, 8:15 AM EDT | Flash Flood Warning | BOX | Norfolk, Plymouth, Suffolk | 3 hr |
| Jul 10, 5:48 AM EDT | Flash Flood Warning | BOX | Providence | 107 min |
Nearby
Flood Watches in Massachusetts, 2025Flood Watches in Rhode Island, 2025Flood Watches in Connecticut, 2025Every flood watch in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.