Alert archive / Rhode Island / Flash Flood Warnings in 2020
Flash Flood Warning 16, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 24, 2020, 2:42 PM EDT for Providence County, Rhode Island; Bristol County, Massachusetts. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 2020, 2:42 PM EDT (18:42 UTC)
- Expired
- Aug 24, 2020, 4:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bristol County, MA, Providence County, RI
The radar
The Boston radar (KBOX), 18 km from the middle of the area, began a volume at 18:45 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
Chatham, MA (KCHH), launched 12:00Z, 6.7 hours before the alert went out and 114 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
- 1029 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
294
WGUS51 KBOX 241842
FFWBOX
MAC005-RIC007-242045-
/O.NEW.KBOX.FF.W.0016.200824T1842Z-200824T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
242 PM EDT Mon Aug 24 2020
The National Weather Service in Boston/Norton has issued a
* Flash Flood Warning for...
West central Bristol County in southeastern Massachusetts...
East central Providence County in Rhode Island...
* Until 445 PM EDT.
* At 241 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
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...
Providence, Pawtucket, Taunton, East Providence, North
Attleborough, Attleboro, Norton, Seekonk, Rehoboth and Dighton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4183 7138 4184 7138 4184 7137 4187 7138
4195 7138 4193 7112 4182 7113
FLASH FLOOD...RADAR INDICATED
$$
Chai1 follow-up statement
325
WGUS71 KBOX 242040
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
440 PM EDT Mon Aug 24 2020
MAC005-RIC007-242047-
/O.EXP.KBOX.FF.W.0016.000000T0000Z-200824T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bristol MA-Providence RI-
440 PM EDT Mon Aug 24 2020
...THE FLASH FLOOD WARNING FOR WEST CENTRAL BRISTOL AND EAST CENTRAL
PROVIDENCE COUNTIES WILL EXPIRE AT 445 PM EDT...
As of 445 PM, heavy rain has ended. However, it may take a couple of
hours for flooding to recede in poor drainage areas. If you
encounter flooded roadways, remember to turn around, don't drown.
LAT...LON 4183 7138 4184 7138 4184 7137 4187 7138
4195 7138 4193 7112 4182 7113
$$
ChaiThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 8:14 PM EDT | Special Weather Statement | BOX | Providence | 46 min |
| Aug 24, 2:27 PM EDT | Special Weather Statement | BOX | Kent | 48 min |
| Aug 24, 3:30 PM EDT | Special Weather Statement | BOX | Bristol | 45 min |
| Aug 23, 9:01 PM EDT | Special Weather Statement | BOX | Hampden | 44 min |
| Aug 23, 9:10 PM EDT | Special Weather Statement | BOX | Worcester | 65 min |
| Aug 23, 9:12 PM EDT | Areal Flood Warning | BOX | Hampden, Hampshire, Worcester | 2 hr |
| Aug 23, 9:35 PM EDT | Special Weather Statement | BOX | Worcester | 40 min |
| Aug 23, 10:24 PM EDT | Special Weather Statement | BOX | Worcester | 51 min |
| Aug 24, 1:23 PM EDT | Special Weather Statement | BOX | Bristol | 52 min |
| Aug 24, 1:43 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Plymouth | 62 min |
| Aug 24, 2:06 PM EDT | Special Weather Statement | BOX | Hampden | 39 min |
| Aug 24, 2:43 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 62 min |
| Aug 24, 2:48 PM EDT | Special Weather Statement | BOX | Hampshire | 42 min |
| Aug 24, 2:56 PM EDT | Special Weather Statement | BOX | Middlesex | 64 min |
| Aug 24, 3:10 PM EDT | Special Weather Statement | BOX | Bristol | 50 min |
| Aug 24, 3:22 PM EDT | Special Weather Statement | BOX | Hampshire | 53 min |
| Aug 24, 3:31 PM EDT | Small Craft Advisory | BOX | 49 hr | |
| Aug 24, 3:37 PM EDT | Special Weather Statement | BOX | Hampshire | 38 min |
| Aug 24, 3:41 PM EDT | Special Weather Statement | BOX | Worcester | 64 min |
| Aug 24, 4:11 PM EDT | Special Weather Statement | BOX | Franklin | 49 min |
| Aug 24, 6:24 PM EDT | Special Weather Statement | BOX | Hampshire | 51 min |
| Aug 24, 6:26 PM EDT | Special Weather Statement | BOX | Franklin | 49 min |
Nearby
Flash Flood Warnings in Rhode Island, 2020Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.