Alert archive / Connecticut / Flash Flood Warnings in 2020
Flash Flood Warning 6, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Jul 3, 2020, 2:45 PM EDT for Capitol Planning Region, Connecticut. It was in force for 2 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
- Jul 3, 2020, 2:45 PM EDT (18:45 UTC)
- Expired
- Jul 3, 2020, 4:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
County Capitol Planning Region, CT
The radar
The Brookhaven radar (KOKX), 95 km from the middle of the area, began a volume at 18:48 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 3, 3:10 PM EDT | FLOOD | Hartford, CT | BUCKINGHAM AND JOHN ST FLOODED AND CARS STUCK |
| Jul 3, 3:10 PM EDT | FLOOD | Hartford, CT | FLOODING ON HILLSIDE AND HAMILTON ST. |
| Jul 3, 3:10 PM EDT | FLOOD | Hartford, CT | HEAVY FLOODING ON BONNER ST AND HILLSIDE. |
| Jul 3, 3:10 PM EDT | FLOOD | Hartford, CT | HEAVY FLOODING ON FRANKLIN AVE AND SOUTH ST. |
| Jul 3, 3:15 PM EDT | FLOOD | Hartford, CT | BROWN ST FLOODED AND IMPASSABLE |
| Jul 3, 3:15 PM EDT | FLOOD | Hartford, CT | FLOODED BASEMENT IN WOLCOTT ST |
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, 6.8 hours before the alert went out and 95 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
- 42 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 1563 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
831
WGUS51 KBOX 031845
FFWBOX
CTC003-032045-
/O.NEW.KBOX.FF.W.0006.200703T1845Z-200703T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Boston/Norton MA
245 PM EDT Fri Jul 3 2020
The National Weather Service in Boston/Norton has issued a
* Flash Flood Warning for...
South central Hartford County in northern Connecticut...
* Until 445 PM EDT.
* At 244 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to two inches of rain have
already fallen. 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...
Hartford, West Hartford, East Hartford, Glastonbury, Newington,
Wethersfield and Rocky Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4178 7273 4180 7266 4164 7255 4163 7261
4163 7269
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
BL2 follow-up statements
023
WGUS71 KBOX 031919
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
319 PM EDT Fri Jul 3 2020
CTC003-032045-
/O.CON.KBOX.FF.W.0006.000000T0000Z-200703T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hartford CT-
319 PM EDT Fri Jul 3 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR
SOUTH CENTRAL HARTFORD COUNTY...
At 310 PM EDT, law enforcement reported Buckingham, John, Franklin,
South, Hillside, Hamilton and Bonner street were flooded. Up to two
and a half inches of rain have fallen. Flash flooding is already
occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Hartford, West Hartford, East Hartford, Glastonbury, Newington,
Wethersfield and Rocky Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4178 7273 4180 7266 4164 7255 4163 7261
4163 7269
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
BL185
WGUS71 KBOX 032037
FFSBOX
Flash Flood Statement
National Weather Service Boston/Norton MA
437 PM EDT Fri Jul 3 2020
CTC003-032046-
/O.EXP.KBOX.FF.W.0006.000000T0000Z-200703T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hartford CT-
437 PM EDT Fri Jul 3 2020
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL HARTFORD COUNTY WILL
EXPIRE AT 445 PM EDT...
The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.
LAT...LON 4178 7273 4180 7266 4164 7255 4163 7261
4163 7269
$$
BLThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 2:22 PM EDT | Special Weather Statement | BOX | 38 min |
Nearby
Flash Flood Warnings in Connecticut, 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.