Alert archive / Connecticut / Flood Watches in 2018

Flood Watch 5, NWS Albany, NY

September 27, 2018Northwest Hills Planning Region, Connecticut

NWS Albany, NY issued this flood watch at Sep 27, 2018, 3:18 PM EDT for Northwest Hills Planning Region, Connecticut. It took effect at Sep 28, 2018, 4:00 AM EDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 27, 2018, 3:18 PM EDT (19:18 UTC)
In effect from
Sep 28, 2018, 4:00 AM EDT
Expired
Sep 28, 2018, 8:22 AM EDT
In force
4 hr
Issued by
NWS Albany, NY
Flood severity
None

County Northwest Hills Planning Region, CT

The radar

The Albany radar (KENX), 108 km from the middle of the area, began a volume at 19:18 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, 7.3 hours before the alert went out and 270 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.

Skew-T log-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2018-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2018-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
566 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Albany, NY wrote its last area forecast discussion before this flood watch went out at Sep 27, 2:17 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, Sep 27, 2:17 PM EDT, 1 hour 1 minute before
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Hazardous weather outlook, Sep 27, 4:23 AM EDT, 10 hours 55 minutes before
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In the hours before

Local storm report, Sep 27, 9:20 AM EDT, 5 hours 58 minutes before
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Local storm report, Sep 27, 10:47 AM EDT, 4 hours 31 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Albany, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 26, 8:00 PM EDTSevere Thunderstorm WarningALYDutchess45 min
Sep 26, 8:24 PM EDTSpecial Weather StatementALYDutchess66 min
Sep 26, 8:41 PM EDTAreal Flood AdvisoryALYDutchess2 hr
Sep 26, 8:21 PM EDTAreal Flood AdvisoryALYNorthwest Hills Planning Region114 min
Sep 26, 8:55 PM EDTFlash Flood WarningALYNorthwest Hills Planning Region3 hr
Sep 27, 3:53 AM EDTRiver Flood WarningALYNorthwest Hills Planning Region33 hr

Nearby

Flood Watches in Connecticut, 2018Every flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.