Alert archive / Massachusetts / Flash Flood Warnings in 2023
Flash Flood Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jun 2, 2023, 7:19 PM EDT for Essex County, Middlesex County, Massachusetts. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 2, 2023, 7:19 PM EDT (23:19 UTC)
- Expired
- Jun 2, 2023, 9:15 PM EDT
- In force
- 116 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Essex County, MA, Middlesex County, MA
The radar
The Boston radar (KBOX), 59 km from the middle of the area, began a volume at 23:21 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
Gray, ME (KGYX), launched 12:00Z, 11.3 hours before the alert went out and 172 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
- 55 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 2001 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
815
WGUS51 KBOX 022319
FFWBOX
MAC009-017-030115-
/O.NEW.KBOX.FF.W.0002.230602T2319Z-230603T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
719 PM EDT Fri Jun 2 2023
The National Weather Service in Norton has issued a
* Flash Flood Warning for...
South Central Essex County in northeastern Massachusetts...
East Central Middlesex County in northeastern Massachusetts...
* Until 915 PM EDT.
* At 719 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 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...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...
Lynn, Malden, Medford, Arlington, Woburn, Lexington, Melrose,
Saugus, Wakefield, Reading, Burlington, Wilmington, Stoneham,
Winchester and Lynnfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4242 7108 4242 7122 4250 7123 4251 7122
4252 7120 4254 7113 4253 7102 4248 7098
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 3 HOURS
$$
RMThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 12:40 PM EDT | Special Weather Statement | BOX | Hampden | 50 min |
| Jun 2, 1:25 PM EDT | Special Weather Statement | BOX | Hampden | 35 min |
| Jun 2, 1:40 PM EDT | Special Weather Statement | BOX | Worcester | 50 min |
| Jun 2, 2:36 PM EDT | Special Weather Statement | BOX | Worcester | 39 min |
| Jun 2, 3:12 PM EDT | High Surf Advisory | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 3 days |
| Jun 2, 4:05 PM EDT | Special Weather Statement | BOX | Middlesex | 25 min |
| Jun 2, 4:14 PM EDT | Special Weather Statement | BOX | Hampshire | 46 min |
| Jun 2, 4:25 PM EDT | Special Weather Statement | BOX | Middlesex | 65 min |
| Jun 2, 4:32 PM EDT | Special Weather Statement | BOX | Middlesex | 28 min |
| Jun 2, 4:41 PM EDT | Flash Flood Warning | BOX | Middlesex | 94 min |
| Jun 2, 4:57 PM EDT | Special Weather Statement | BOX | Norfolk | 33 min |
| Jun 2, 5:02 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 24 min |
| Jun 2, 6:59 PM EDT | Special Weather Statement | BOX | Suffolk | 61 min |
Nearby
Flash Flood Warnings in Massachusetts, 2023Every flash flood warning in 2023
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.