Alert archive / Rhode Island / Areal Flood Warnings in 2011
Areal Flood Warning 26, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this areal flood warning at Dec 8, 2011, 6:33 PM EST for Washington County, Rhode Island. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 8, 2011, 6:33 PM EST (23:33 UTC)
- Expired
- Dec 8, 2011, 11:31 PM EST
- In force
- 5 hr
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Flood severity
- None
County Washington County, RI
The radar
The Boston radar (KBOX), 74 km from the middle of the area, began a volume at 23:30 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
Brookhaven, NY (KOKX), launched 12:00Z, 11.6 hours before the alert went out and 120 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 831 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- -103 m²/s²
- 0-3 km storm-relative helicity
- -37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this areal flood warning went out at Dec 8, 5:05 PM EST, 1 hour 28 minutes earlier.
Area forecast discussion, Dec 8, 5:05 PM EST, 1 hour 28 minutes before
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</html>Hazardous weather outlook, Dec 8, 4:35 PM EST, 1 hour 58 minutes before
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Local storm report, Dec 8, 3:45 PM EST, 2 hours 48 minutes before
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</html>The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 8, 12:12 AM EST | Areal Flood Advisory | BOX | Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 5 hr |
| Dec 8, 1:23 AM EST | Areal Flood Advisory | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 4 hr |
| Dec 8, 3:41 AM EST | High Wind Warning | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 3 hr |
| Dec 8, 3:41 AM EST | Wind Advisory | BOX | Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 4 more | 6 hr |
| Dec 8, 4:05 AM EST | Storm Warning | BOX | 3 hr | |
| Dec 8, 4:27 AM EST | Areal Flood Warning | BOX | Franklin, Hampden, Hampshire | 4 hr |
| Dec 8, 10:29 AM EST | Small Craft Advisory | BOX | 16 hr | |
| Dec 7, 10:58 PM EST | River Flood Warning | BOX | Kent, Providence | 70 hr |
| Dec 8, 5:38 PM EST | Areal Flood Advisory | BOX | Washington | 12 hr |
| Dec 8, 4:39 AM EST | River Flood Warning | BOX | Capitol Planning Region | 25 hr |
| Dec 8, 5:40 AM EST | Areal Flood Warning | BOX | Northeastern Connecticut Planning Region | 3 hr |
| Dec 8, 11:45 AM EST | River Flood Warning | BOX | Capitol Planning Region, Lower Connecticut River Valley Planning Region | 57 hr |
Nearby
Areal Flood Warnings in Rhode Island, 2011Every areal flood warning in 2011
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.