Alert archive / Rhode Island / Flash Flood Warnings in 2021
Flash Flood Warning 35, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Sep 2, 2021, 2:34 AM EDT for Bristol County, Plymouth County, Massachusetts; 5 counties in Rhode Island. It was in force for 6 hr. 6 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
- Sep 2, 2021, 2:34 AM EDT (06:34 UTC)
- Expired
- Sep 2, 2021, 8:30 AM EDT
- In force
- 6 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Bristol County, MA, Plymouth County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 32 km from the middle of the area, began a volume at 06:37 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 |
|---|---|---|---|
| Sep 2, 2:47 AM EDT | FLOOD | 2 Sw Fall River, MA | BEDFORD STREET AT STINZIANO STREET FLOODED AND IMPASSABLE. |
| Sep 2, 3:04 AM EDT | FLOOD | 2 S Middletown, RI | WOOD ROAD FLOODED AND IMPASSABLE. A RESIDENTS BASEMENT IS ALSO FLOODED. |
| Sep 2, 3:20 AM EDT | FLOOD | Fall River, MA | 24 NORTHBOUND RAMP ON I-195 FLOODED WITH TWO CARS STUCK IN THE FLOOD WATERS. |
| Sep 2, 3:21 AM EDT | FLOOD | 1 Sse Somerset, MA | COVE STREET FLOODED AND IMPASSABLE. CAR WAS STUCK IN THE FLOOD WATERS AND A PERSON NEEDED TO BE RESCUED. |
| Sep 2, 8:33 AM EDT | HEAVY RAIN 9.5 | New Bedford, MA | |
| Sep 2, 8:40 AM EDT | HEAVY RAIN 5.5 | North Kingstown, RI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 6.6 hours before the alert went out and 162 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
- 123 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
431
WGUS51 KBOX 020634
FFWBOX
MAC005-023-RIC001-003-005-007-009-021230-
/O.NEW.KBOX.FF.W.0035.210902T0634Z-210902T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
234 AM EDT Thu Sep 2 2021
The National Weather Service in Norton has issued a
* Flash Flood Warning for...
Bristol County in southeastern Massachusetts...
Southwestern Plymouth County in southeastern Massachusetts...
Bristol County in Rhode Island...
Eastern Kent County in Rhode Island...
Newport County in Rhode Island...
Southeastern Providence County in Rhode Island...
Northeastern Washington County in Rhode Island...
* Until 830 AM EDT.
* At 234 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 4 inches of rain
have fallen. Additional rainfall amounts of 2 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Providence, New Bedford, Fall River, Warwick, Cranston, Pawtucket,
Taunton, East Providence, Coventry, Dartmouth, Cumberland, North
Providence, South Kingstown, West Warwick, Johnston, North
Kingstown, Newport, Bristol, Attleboro and Middleborough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4157 7161 4183 7156 4191 7141 4191 7139
4187 7108 4187 7106 4185 7092 4165 7079
4157 7073 4149 7104 4137 7150 4136 7156
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Frank1 follow-up statement
258
WGUS71 KBOX 020757
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
357 AM EDT Thu Sep 2 2021
MAC005-023-RIC001-003-005-007-009-021230-
/O.CON.KBOX.FF.W.0035.000000T0000Z-210902T1230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bristol MA-Plymouth MA-Bristol RI-Kent RI-Newport RI-Providence RI-
Washington RI-
357 AM EDT Thu Sep 2 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM EDT THIS
MORNING FOR BRISTOL, SOUTHWESTERN PLYMOUTH, BRISTOL, EASTERN KENT,
NEWPORT, SOUTHEASTERN PROVIDENCE AND NORTHEASTERN WASHINGTON
COUNTIES...
At 357 AM EDT, trained weather spotters reported thunderstorms
producing heavy rain across the warned area. There is significant
urban flooding reported across the region particularly in Fall
River. There are many roads acros Fall River that are currently
impassable and some vehicles stuck in flood waters.
Between 2 and 4.5 inches of rain have fallen. Additional rainfall
amounts of 1 to 2 inches are possible in the warned area. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Trained spotters reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Providence, New Bedford, Fall River, Warwick, Cranston, Pawtucket,
Taunton, East Providence, Coventry, Dartmouth, Cumberland, North
Providence, South Kingstown, West Warwick, Johnston, North
Kingstown, Newport, Bristol, Attleboro and Middleborough.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4157 7161 4183 7156 4191 7141 4191 7139
4187 7108 4187 7106 4185 7092 4165 7079
4157 7073 4149 7104 4137 7150 4136 7156
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
FrankThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 9:13 PM EDT | Flash Flood Warning | BOX | Hampden | 10 hr |
| Sep 1, 9:24 PM EDT | Special Marine Warning | BOX | 66 min | |
| Sep 1, 9:37 PM EDT | Flash Flood Warning | BOX | Worcester | 10 hr |
| Sep 1, 10:01 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 8 hr |
| Sep 1, 10:32 PM EDT | Flash Flood Warning | BOX | Bristol, Norfolk, Plymouth | 10 hr |
| Sep 1, 10:45 PM EDT | Special Marine Warning | BOX | 45 min | |
| Sep 1, 10:57 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire, Middlesex, Worcester | 8 hr |
| Sep 1, 11:02 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex | 8 hr |
| Sep 1, 11:21 PM EDT | Tornado Warning | BOX | Barnstable, Bristol, Dukes, Plymouth | 54 min |
| Sep 1, 11:24 PM EDT | Special Marine Warning | BOX | 66 min | |
| Sep 1, 11:32 PM EDT | Special Marine Warning | BOX | 58 min | |
| Sep 1, 11:32 PM EDT | Special Marine Warning | BOX | 58 min | |
| Sep 1, 11:56 PM EDT | Tornado Warning | BOX | Barnstable, Dukes | 49 min |
| Sep 2, 12:08 AM EDT | Flash Flood Warning | BOX | Barnstable, Dukes | 8 hr |
| Sep 2, 12:20 AM EDT | Special Marine Warning | BOX | 55 min | |
| Sep 2, 12:22 AM EDT | Tornado Warning | BOX | Dukes | 53 min |
| Sep 2, 12:25 AM EDT | Special Marine Warning | BOX | 65 min | |
| Sep 2, 12:45 AM EDT | Tornado Warning | BOX | Barnstable, Dukes | 60 min |
| Sep 2, 1:07 AM EDT | Special Marine Warning | BOX | 83 min | |
| Sep 2, 1:15 AM EDT | Tornado Warning | BOX | Dukes | 28 min |
| Sep 2, 1:51 AM EDT | River Flood Warning | BOX | Worcester | 31 hr |
| Sep 2, 1:56 AM EDT | Tornado Warning | BOX | Barnstable | 26 min |
| Sep 2, 3:42 AM EDT | River Flood Warning | BOX | Norfolk, Suffolk | 11 hr |
| Sep 2, 5:14 AM EDT | Special Marine Warning | BOX | 46 min | |
| Sep 2, 5:26 AM EDT | Flash Flood Warning | BOX | Barnstable, Bristol, Dukes, Plymouth | 3 hr |
| Sep 2, 5:30 AM EDT | River Flood Warning | BOX | Middlesex | 22 hr |
| Sep 2, 5:49 AM EDT | Special Marine Warning | BOX | 42 min | |
| Sep 2, 6:02 AM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 3 hr |
| Sep 2, 6:14 AM EDT | Special Marine Warning | BOX | 25 min | |
| Sep 2, 6:50 AM EDT | Areal Flood Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 6 hr |
| Sep 2, 7:04 AM EDT | Areal Flood Warning | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more | 11 hr |
| Sep 2, 7:25 AM EDT | Flash Flood Warning | BOX | Hampden, Hampshire, Worcester | 6 hr |
| Sep 2, 7:43 AM EDT | Areal Flood Warning | BOX | Bristol, Norfolk, Plymouth, Worcester | 6 hr |
| Sep 2, 7:54 AM EDT | Areal Flood Warning | BOX | Barnstable, Dukes, Plymouth | 6 hr |
| Sep 2, 8:14 AM EDT | River Flood Warning | BOX | Hampden, Hampshire | 13 hr |
| Sep 2, 8:20 AM EDT | River Flood Warning | BOX | Worcester | 32 hr |
| Sep 2, 8:20 AM EDT | River Flood Warning | BOX | Middlesex, Worcester | 60 hr |
| Sep 2, 9:25 AM EDT | River Flood Warning | BOX | Bristol, Plymouth | 64 hr |
| Sep 2, 10:40 AM EDT | Small Craft Advisory | BOX | 17 hr | |
| Sep 2, 12:51 PM EDT | Areal Flood Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Norfolk, Worcester | 6 hr |
| Sep 2, 1:28 PM EDT | Areal Flood Warning | BOX | Hampden | 6 hr |
| Sep 2, 1:42 PM EDT | Areal Flood Warning | BOX | Bristol, Norfolk, Plymouth, Worcester | 6 hr |
| Sep 2, 5:59 PM EDT | River Flood Warning | BOX | Essex, Middlesex | 25 hr |
| Sep 1, 10:17 PM EDT | Flash Flood Warning | BOX | Bristol, Kent, Newport, Providence, Washington | 9 hr |
| Sep 2, 5:10 AM EDT | River Flood Warning | BOX | Kent, Providence | 18 hr |
| Sep 2, 8:20 AM EDT | River Flood Warning | BOX | Washington | 43 hr |
| Sep 2, 8:20 AM EDT | River Flood Warning | BOX | Washington | 53 hr |
Nearby
Flash Flood Warnings in Rhode Island, 2021Flash Flood Warnings in Massachusetts, 2021Every flash flood warning in 2021
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.