Alert archive / Massachusetts / Flash Flood Warnings in 2020
Flash Flood Warning 3, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jun 28, 2020, 5:04 PM EDT for 5 counties in Massachusetts. It was in force for 116 min. 10 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 28, 2020, 5:04 PM EDT (21:04 UTC)
- Expired
- Jun 28, 2020, 7:00 PM EDT
- In force
- 116 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Bristol County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 21 km from the middle of the area, began a volume at 21:08 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 28, 5:10 PM EDT | FLOOD | Stoughton, MA | FLOODING ON PEARL STREET; AT LEAST 3-4 INCHES OF WATER ON THE ROADWAY. |
| Jun 28, 5:22 PM EDT | FLOOD | Norwood, MA | WASHINGTON STREET IS THE AREA OF NORWOOD HOSPITAL IS FLOODED AND IMPASSABLE. NORWOOD HOSPITAL HAS 4FT OF WATER IN THE BASEMENT. |
| Jun 28, 5:27 PM EDT | FLOOD | Westwood, MA | CAR STUCK IN FLOOD WATERS ON EAST STREET. |
| Jun 28, 5:45 PM EDT | FLOOD | Brockton, MA | FLOODING ON WEST STREET, WITH POPPED MANHOLE COVERS. |
| Jun 28, 5:57 PM EDT | FLOOD | Wrentham, MA | FLOODING OF A FINISHED BASEMENT ON MARTIN LANE. |
| Jun 28, 6:00 PM EDT | FLOOD | Brockton, MA | JEEP STUCK IN FLOOD WATERS ON TORREY AT CALVIN STREET. A CAR WAS STUCK IN FLOODING ON AMES STREET. |
| Jun 28, 6:16 PM EDT | FLOOD | Wrentham, MA | FLOODED BASEMENT ON CHESTNUT STREET |
| Jun 28, 6:18 PM EDT | FLOOD | Franklin, MA | 31 BROOK STREET FLOODED AND IMPASSABLE. |
| Jun 28, 6:18 PM EDT | FLOOD | Franklin, MA | BASEMENT FLOODED ON WASHINGTON STREET. |
| Jun 28, 6:45 PM EDT | FLOOD | Franklin, MA | FLOODED BASEMENT ON JORDAN ROAD. STREET FLOODING ON SARGENT LANE AT DARTMOUTH ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 9.1 hours before the alert went out and 113 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
679
WGUS51 KBOX 282104
FFWBOX
MAC005-017-021-023-027-282300-
/O.NEW.KBOX.FF.W.0003.200628T2104Z-200628T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
504 PM EDT Sun Jun 28 2020
The National Weather Service in Boston/Norton has issued a
* Flash Flood Warning for...
Norfolk County in eastern Massachusetts...
Eastern Worcester County in central Massachusetts...
South central Middlesex County in northeastern Massachusetts...
West central Plymouth County in southeastern Massachusetts...
North central Bristol County in southeastern Massachusetts...
* Until 700 PM EDT.
* At 504 PM EDT, Doppler radar and automated gauges indicated
thunderstorms producing heavy rain across the warned area. Two to
three inches of rain have already fallen. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Brockton, Quincy, Randolph, Franklin, Norwood, Milford, Milton,
Stoughton, Dedham, Walpole, Mansfield, Easton, Canton, Sharon,
Foxborough, Bellingham, Abington, Westwood, Holliston and Medway.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4210 7096 4204 7114 4203 7151 4219 7152
4223 7114 4223 7113 4224 7108
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$2 follow-up statements
124
WGUS71 KBOX 282122
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
522 PM EDT Sun Jun 28 2020
MAC005-017-021-023-027-282300-
/O.CON.KBOX.FF.W.0003.000000T0000Z-200628T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Norfolk MA-Worcester MA-Middlesex MA-Plymouth MA-Bristol MA-
522 PM EDT Sun Jun 28 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORFOLK...EASTERN WORCESTER...SOUTH CENTRAL MIDDLESEX...WEST CENTRAL
PLYMOUTH AND NORTH CENTRAL BRISTOL COUNTIES...
At 519 PM EDT, trained weather spotters reported heavy rain falling
in Westwood, Norwood and Dedham!. Up to 3.5 of rain have already
fallen. Flash flooding is already occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Trained weather spotters.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Brockton, Quincy, Randolph, Franklin, Norwood, Milford, Milton,
Stoughton, Dedham, Walpole, Mansfield, Easton, Canton, Sharon,
Foxborough, Bellingham, Abington, Westwood, Holliston and Medway.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4210 7096 4204 7114 4203 7151 4219 7152
4223 7114 4223 7113 4224 7108
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$844
WGUS71 KBOX 282143
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
543 PM EDT Sun Jun 28 2020
MAC005-017-021-023-027-282300-
/O.CON.KBOX.FF.W.0003.000000T0000Z-200628T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Norfolk MA-Worcester MA-Middlesex MA-Plymouth MA-Bristol MA-
543 PM EDT Sun Jun 28 2020
...THIS IS A FLASH FLOOD EMERGENCY FOR THE TOWN OF NORWOOD AND
SURROUNDING TOWNS...
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
NORFOLK...EASTERN WORCESTER...SOUTH CENTRAL MIDDLESEX...WEST CENTRAL
PLYMOUTH AND NORTH CENTRAL BRISTOL COUNTIES...
At 537 PM EDT, law enforcement reported heavy rain falling including
the towns of Norwood and Dedham where up to 3.5 inches have already
fallen. Flash flooding is already occurring. Some evacuations may be
necessary. Listen to local officials.
THIS IS A FLASH FLOOD EMERGENCY FOR NORWOOD AND SURROUNDING TOWNS!
This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!
HAZARD...Life threatening flash flooding. Heavy rain producing flash
flooding.
SOURCE...Law enforcement.
IMPACT...This is a PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER
GROUND NOW! Life threatening flash flooding of low water
crossings, small creeks and streams, urban areas, highways,
streets and underpasses.
Some locations that will experience flooding include...
Brockton, Quincy, Randolph, Franklin, Norwood, Milford, Milton,
Stoughton, Dedham, Walpole, Mansfield, Easton, Canton, Sharon,
Foxborough, Bellingham, Abington, Westwood, Holliston and Medway.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.
&&
LAT...LON 4210 7096 4204 7114 4203 7151 4219 7152
4223 7114 4223 7113 4224 7108
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
NOCERAThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 12:51 PM EDT | Special Weather Statement | BOX | Middlesex | 39 min |
| Jun 28, 1:10 PM EDT | Special Weather Statement | BOX | Hampshire | 50 min |
| Jun 28, 1:19 PM EDT | Special Weather Statement | BOX | Suffolk | 41 min |
| Jun 28, 1:26 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Norfolk, Plymouth, Suffolk | 64 min |
| Jun 28, 1:31 PM EDT | Special Marine Warning | BOX | 89 min | |
| Jun 28, 1:39 PM EDT | Special Weather Statement | BOX | Franklin | 51 min |
| Jun 28, 1:42 PM EDT | Special Weather Statement | BOX | Franklin | 63 min |
| Jun 28, 1:49 PM EDT | Areal Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 116 min |
| Jun 28, 1:58 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex, Norfolk, Suffolk | 3 hr |
| Jun 28, 2:23 PM EDT | Areal Flood Warning | BOX | Franklin, Hampshire | 2 hr |
| Jun 28, 2:32 PM EDT | Special Weather Statement | BOX | Suffolk | 58 min |
| Jun 28, 2:45 PM EDT | Special Weather Statement | BOX | Hampden | 45 min |
| Jun 28, 2:50 PM EDT | Special Weather Statement | BOX | Essex | 55 min |
| Jun 28, 3:02 PM EDT | Severe Thunderstorm Warning | BOX | Plymouth | 35 min |
| Jun 28, 3:03 PM EDT | Flash Flood Warning | BOX | Norfolk, Plymouth, Suffolk | 117 min |
| Jun 28, 3:07 PM EDT | Special Marine Warning | BOX | 83 min | |
| Jun 28, 3:13 PM EDT | Special Weather Statement | BOX | Norfolk | 47 min |
| Jun 28, 3:16 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 59 min |
| Jun 28, 3:47 PM EDT | Special Weather Statement | BOX | Middlesex | 43 min |
| Jun 28, 4:02 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Plymouth, Suffolk | 58 min |
| Jun 28, 4:11 PM EDT | Areal Flood Warning | BOX | Middlesex, Norfolk, Suffolk | 55 min |
| Jun 28, 4:39 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 51 min |
| Jun 28, 4:46 PM EDT | Special Weather Statement | BOX | Hampden | 44 min |
| Jun 28, 4:58 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth, Worcester | 62 min |
| Jun 28, 5:02 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Worcester | 58 min |
| Jun 28, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | Norfolk, Worcester | 55 min |
| Jun 28, 5:17 PM EDT | Special Weather Statement | BOX | Franklin, Hampshire | 58 min |
| Jun 28, 5:28 PM EDT | Special Weather Statement | BOX | Nantucket | 62 min |
| Jun 28, 5:34 PM EDT | Flash Flood Warning | BOX | Worcester | 108 min |
| Jun 28, 6:00 PM EDT | River Flood Warning | BOX | Norfolk, Suffolk | 2 hr |
| Jun 28, 6:04 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Worcester | 56 min |
| Jun 28, 6:20 PM EDT | Special Weather Statement | BOX | Hampshire | 40 min |
| Jun 28, 6:23 PM EDT | Flash Flood Warning | BOX | Worcester | 83 min |
| Jun 28, 6:35 PM EDT | Special Weather Statement | BOX | Norfolk | 55 min |
| Jun 28, 6:56 PM EDT | Areal Flood Warning | BOX | Bristol, Middlesex, Norfolk, Worcester | 2 hr |
| Jun 28, 6:59 PM EDT | Special Weather Statement | BOX | Worcester | 61 min |
| Jun 28, 7:01 PM EDT | Special Weather Statement | BOX | Bristol | 44 min |
| Jun 28, 7:20 PM EDT | Areal Flood Warning | BOX | Worcester | 115 min |
Nearby
Flash Flood Warnings in Massachusetts, 2020Every flash flood warning in 2020
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.