Alert archive / Connecticut / Flash Flood Warnings in 2018
Flash Flood Warning 22, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this flash flood warning at Aug 7, 2018, 9:35 PM EDT for Capitol Planning Region, Connecticut. It was in force for 94 min. 8 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
- Aug 7, 2018, 9:35 PM EDT (01:35 UTC)
- Expired
- Aug 7, 2018, 11:09 PM EDT
- In force
- 94 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
County Capitol Planning Region, CT
The radar
The Brookhaven radar (KOKX), 118 km from the middle of the area, began a volume at 01:37 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 |
|---|---|---|---|
| Aug 7, 9:50 PM EDT | FLASH FLOOD | 1 Ssw North Bloomfield, CT | 3 FEET OF WATER ON ROAD AT WALTS HILL |
| Aug 7, 10:26 PM EDT | FLASH FLOOD | 1 Nne Windsor, CT | SLEEPY HOLLOW ROAD AT PIERSON LANE CLOSED DUE TO FLOODING |
| Aug 7, 10:35 PM EDT | FLASH FLOOD | Windsor, CT | SIGNIFICANT STREET FLOODING ON HOLCOMB HILL ROAD |
| Aug 7, 10:35 PM EDT | FLASH FLOOD | Windsor Locks, CT | CENTER STREET BETWEEN SPRING AND ELM STREETS CLOSED DUE TO FLOODING |
| Aug 7, 10:41 PM EDT | FLASH FLOOD | Simsbury, CT | SECTION OF ROUTE 10 FLOODED OUT |
| Aug 7, 10:49 PM EDT | HEAVY RAIN 4.67 | Windsor, CT | |
| Aug 7, 11:05 PM EDT | HEAVY RAIN 4.67 | Windsor, CT | |
| Aug 7, 11:09 PM EDT | HEAVY RAIN 3.47 | East Granby, CT |
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 00:00Z, 1.6 hours before the alert went out and 118 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
- 1768 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
510 WGUS51 KBOX 080135 FFWBOX CTC003-080330- /O.NEW.KBOX.FF.W.0022.180808T0135Z-180808T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Boston/Norton MA 935 PM EDT TUE AUG 7 2018 The National Weather Service in Boston/Norton has issued a * Flash Flood Warning for... North central Hartford County in northern Connecticut... * Until 1130 PM EDT. * At 933 PM EDT Doppler radar indicated thunderstorms producing heavy rain across northern Hartford county. Over two inches of rain has already fallen in the past hour with additional rainfall expected. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Enfield, Windsor, South Windsor, Simsbury, Bloomfield, Avon, Suffield, Windsor Locks, Granby, East Windsor, Canton and East Granby. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Warning means that flooding will occur quickly, and could be life threatening for those who try to drive through flooded roads or underpasses. Find alternate routes. Those near small streams need to get to higher ground immediately. && LAT...LON 4199 7258 4184 7259 4181 7288 4196 7288 $$ Nocera
1 follow-up statement
209 WGUS71 KBOX 080309 FFSBOX Flash Flood Statement National Weather Service Boston/Norton MA 1109 PM EDT TUE AUG 7 2018 CTC003-080319- /O.CAN.KBOX.FF.W.0022.000000T0000Z-180808T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hartford CT- 1109 PM EDT TUE AUG 7 2018 ...THE FLASH FLOOD WARNING FOR NORTH CENTRAL HARTFORD COUNTY IS CANCELLED... The heavy rain has ended. Flood waters have receded...but please continue to heed any remaining road closures. LAT...LON 4199 7258 4184 7259 4181 7288 4196 7288 $$ Frank
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:50 PM EDT | Areal Flood Advisory | BOX | Capitol Planning Region | 55 min |
| Aug 8, 3:29 AM EDT | Heat Advisory | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 15 hr |
Nearby
Flash Flood Warnings in Connecticut, 2018Every flash flood warning in 2018
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.