Alert archive / Rhode Island / Flash Flood Warnings in 2021
Flash Flood Warning 12, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jul 17, 2021, 5:30 PM EDT for Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 3 hr. 2 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
- Jul 17, 2021, 5:30 PM EDT (21:30 UTC)
- Expired
- Jul 17, 2021, 8:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Northeastern Connecticut Planning Region, CT, Providence County, RI
The radar
The Boston radar (KBOX), 38 km from the middle of the area, began a volume at 21:29 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 |
|---|---|---|---|
| Jul 17, 6:24 PM EDT | FLOOD | Providence, RI | EDDY STREET BETWEEN NEBRASKA STREET AND PAVILLION AVE FLOODED AND IMPASSABLE |
| Jul 17, 6:30 PM EDT | FLOOD | Providence, RI | FALLON AVE FLOODED AND IMPASSABLE |
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 12:00Z, 9.5 hours before the alert went out and 157 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
- 1203 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1054 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted.
173
WGUS51 KBOX 172130
FFWBOX
CTC015-RIC007-180030-
/O.NEW.KBOX.FF.W.0012.210717T2130Z-210718T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
530 PM EDT Sat Jul 17 2021
The National Weather Service in Norton has issued a
* Flash Flood Warning for...
Northeastern Windham County in northern Connecticut...
Providence County in Rhode Island...
* Until 830 PM EDT.
* At 530 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. 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...
Providence, Cranston, Pawtucket, East Providence, Woonsocket,
Cumberland, North Providence, Johnston, North Attleborough,
Attleboro, Smithfield, Lincoln, Central Falls, Killingly,
Bellingham, Burrillville, Uxbridge, North Smithfield, Wrentham and
Scituate.
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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4201 7183 4202 7139 4199 7138 4189 7138
4187 7134 4182 7141 4175 7155 4180 7191
4185 7190
FLASH FLOOD...RADAR INDICATED
$$
BL3 follow-up statements
564
WGUS71 KBOX 172301
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
701 PM EDT Sat Jul 17 2021
CTC015-RIC007-180030-
/O.CON.KBOX.FF.W.0012.000000T0000Z-210718T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Windham CT-Providence RI-
701 PM EDT Sat Jul 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR EASTERN WINDHAM AND CENTRAL PROVIDENCE COUNTIES...
At 701 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 3 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Providence, Cranston, Pawtucket, East Providence, Cumberland,
North Providence, Johnston, Attleboro, Smithfield, Lincoln,
Central Falls, Killingly, Burrillville, North Smithfield,
Scituate, Glocester and Foster.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4189 7180 4193 7168 4199 7144 4198 7139
4190 7138 4189 7138 4187 7134 4185 7137
4184 7138 4182 7141 4175 7155 4179 7164
4185 7190
FLASH FLOOD...RADAR INDICATED
$$
BL559
WGUS71 KBOX 172358
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
758 PM EDT Sat Jul 17 2021
RIC007-180030-
/O.CON.KBOX.FF.W.0012.000000T0000Z-210718T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Providence RI-
758 PM EDT Sat Jul 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR NORTHEASTERN PROVIDENCE COUNTY...
At 758 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 3 inches of rain have
fallen. 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...
Providence, Cranston, Pawtucket, East Providence, Cumberland,
North Providence, Johnston, Smithfield, Lincoln and Central Falls.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4191 7152 4192 7151 4196 7146 4193 7142
4190 7140 4189 7138 4187 7136 4185 7137
4184 7138 4182 7141 4179 7148 4186 7153
4190 7153
FLASH FLOOD...RADAR INDICATED
$$
BL147
WGUS71 KBOX 180018
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
818 PM EDT Sat Jul 17 2021
CTC015-180028-
/O.CAN.KBOX.FF.W.0012.000000T0000Z-210718T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Windham CT-
818 PM EDT Sat Jul 17 2021
...FLASH FLOOD WARNING IS CANCELLED FOR PROVIDENCE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4191 7152 4192 7151 4196 7146 4193 7142
4190 7140 4189 7138 4187 7136 4185 7137
4184 7138 4182 7141 4179 7148 4186 7153
4190 7153
$$
RIC007-180028-
/O.CAN.KBOX.FF.W.0012.000000T0000Z-210718T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Providence RI-
818 PM EDT Sat Jul 17 2021
...FLASH FLOOD WARNING IS CANCELLED FOR PROVIDENCE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4191 7152 4192 7151 4196 7146 4193 7142
4190 7140 4189 7138 4187 7136 4185 7137
4184 7138 4182 7141 4179 7148 4186 7153
4190 7153
$$
BLThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 2:14 PM EDT | Special Weather Statement | BOX | Bristol | 46 min |
| Jul 17, 2:39 PM EDT | Areal Flood Warning | BOX | Kent, Providence | 111 min |
| Jul 17, 2:46 PM EDT | Special Weather Statement | BOX | Providence | 44 min |
| Jul 17, 2:53 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 52 min |
| Jul 17, 3:26 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 64 min |
| Jul 17, 3:36 PM EDT | Areal Flood Warning | BOX | Kent, Providence | 114 min |
| Jul 17, 4:06 PM EDT | Flash Flood Warning | BOX | Kent, Providence | 4 hr |
| Jul 17, 4:29 PM EDT | Severe Thunderstorm Warning | BOX | Kent, Providence | 61 min |
| Jul 17, 5:49 PM EDT | Special Weather Statement | BOX | Bristol | 41 min |
| Jul 17, 6:05 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Kent, Providence | 26 min |
| Jul 17, 1:59 PM EDT | Special Weather Statement | BOX | 46 min | |
| Jul 17, 3:47 PM EDT | Areal Flood Warning | BOX | Northeastern Connecticut Planning Region | 118 min |
| Jul 17, 4:14 PM EDT | Flash Flood Warning | BOX | Northeastern Connecticut Planning Region | 5 hr |
| Jul 17, 4:15 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 60 min |
| Jul 17, 4:18 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 57 min |
| Jul 17, 4:20 PM EDT | Special Weather Statement | BOX | 40 min | |
| Jul 17, 4:38 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 67 min |
| Jul 17, 4:58 PM EDT | Flash Flood Warning | BOX | Capitol Planning Region | 2 hr |
| Jul 17, 5:21 PM EDT | Flash Flood Warning | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 5 hr |
Nearby
Flash Flood Warnings in Rhode Island, 2021Flash Flood Warnings in Connecticut, 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.