Alert archive / Massachusetts / Flash Flood Warnings in 2025
Flash Flood Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jun 6, 2025, 3:25 PM EDT for Franklin County, Hampshire County, Massachusetts. It was in force for 3 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 6, 2025, 3:25 PM EDT (19:25 UTC)
- Expired
- Jun 6, 2025, 6:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Franklin County, MA, Hampshire County, MA
The radar
The Albany radar (KENX), 101 km from the middle of the area, began a volume at 19:27 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 6, 5:30 PM EDT | FLASH FLOOD | Charlemont, MA | Corrects previous flash flood report from Charlemont. In Charlemont, flash flooding washed out Legate Hill road at route 2. Report relayed via amateur radio. |
| Jun 6, 5:30 PM EDT | FLASH FLOOD | Charlemont, MA | Corrects previous flash flood report from Charlemont. In Charlemont, flash flooding washed out Legate Hill road at route 2. Report relayed via amateur radio. |
| Jun 6, 5:30 PM EDT | FLASH FLOOD | Charlemont, MA | In Charlemont, flash flooding washed out a secion of route 2. Report relayed via amateur radio. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.4 hours before the alert went out and 82 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
- 53 J/kg
- Mixed-layer CIN
- -201 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
416
WGUS51 KBOX 061925
FFWBOX
MAC011-015-062115-
/O.NEW.KBOX.FF.W.0002.250606T1925Z-250606T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
325 PM EDT Fri Jun 6 2025
The National Weather Service in Norton has issued a
* Flash Flood Warning for...
Northwestern Franklin County in western Massachusetts...
Northern Hampshire County in western Massachusetts...
* Until 515 PM EDT.
* At 325 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Buckland, Conway, Shelburne, Ashfield, Colrain, Charlemont, Heath,
Plainfield, Rowe and Hawley.
Additional rainfall from thunderstorm approaching from the south may
result in localized Flash Flooding for portions of western Franklin
County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4269 7288 4270 7270 4250 7276 4252 7295
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
RM3 follow-up statements
385
WGUS71 KBOX 062033
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
433 PM EDT Fri Jun 6 2025
MAC015-062043-
/O.CAN.KBOX.FF.W.0002.000000T0000Z-250606T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hampshire MA-
433 PM EDT Fri Jun 6 2025
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN HAMPSHIRE COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
A Flood Watch remains in effect until 1200 AM EDT Saturday for
portions of central, eastern, northeastern, and western
Massachusetts.
&&
LAT...LON 4251 7287 4252 7287 4253 7288 4254 7288
4255 7294 4269 7288 4270 7270 4250 7276
$$
MAC011-062115-
/O.CON.KBOX.FF.W.0002.000000T0000Z-250606T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MA-
433 PM EDT Fri Jun 6 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT THIS
AFTERNOON FOR NORTHWESTERN FRANKLIN COUNTY...
At 433 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 3 inches of rain have
fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Buckland, Conway, Shelburne, Ashfield, Colrain, Charlemont, Heath,
Plainfield, Rowe and Hawley.
Hawley, MA reported 1 inch of rain in 20 minutes. Another round of
heavy precipitation will be moving through the area within the next
hour. This may exacerbate any ongoing impacts from previous
excessive rainfall.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4251 7287 4252 7287 4253 7288 4254 7288
4255 7294 4269 7288 4270 7270 4250 7276
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
RM621
WGUS51 KBOX 062057
FFWBOX
MAC011-062215-
/O.EXT.KBOX.FF.W.0002.000000T0000Z-250606T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
457 PM EDT Fri Jun 6 2025
The National Weather Service in Norton has extended the
* Flash Flood Warning for...
Northwestern Franklin County in western Massachusetts...
* Until 615 PM EDT.
* At 457 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 3 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Buckland, Conway, Shelburne, Ashfield, Colrain, Charlemont, Heath,
Plainfield, Rowe and Hawley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4251 7287 4252 7287 4253 7288 4254 7288
4255 7294 4269 7288 4270 7270 4250 7276
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
RM013
WGUS71 KBOX 062211
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
611 PM EDT Fri Jun 6 2025
MAC011-062221-
/O.EXP.KBOX.FF.W.0002.000000T0000Z-250606T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Franklin MA-
611 PM EDT Fri Jun 6 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 615 PM EDT THIS EVENING FOR
NORTHWESTERN FRANKLIN COUNTY...
Renewed flash flooding is no longer expected to pose a threat.
Please continue to heed remaining road closures.
A Flood Watch remains in effect until 1200 AM EDT for portions of
central, eastern, northeastern, and western Massachusetts.
&&
LAT...LON 4251 7287 4252 7287 4253 7288 4254 7288
4255 7294 4269 7288 4270 7270 4250 7276
$$The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 2:24 AM EDT | Flood Watch | BOX | Essex, Franklin, Hampden, Hampshire, Middlesex, Worcester | 19 hr |
| Jun 6, 6:52 AM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 53 min |
| Jun 6, 3:24 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 51 min |
| Jun 6, 3:38 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 52 min |
| Jun 6, 4:16 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 44 min |
| Jun 6, 4:52 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 53 min |
| Jun 6, 5:05 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire, Worcester | 114 min |
| Jun 6, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 40 min |
| Jun 6, 5:32 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 13 min |
| Jun 6, 5:44 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 46 min |
| Jun 6, 6:09 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 51 min |
| Jun 6, 6:31 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 83 min |
| Jun 6, 7:14 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 22 min |
Nearby
Flash Flood Warnings in Massachusetts, 2025Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.