Alert archive / Massachusetts / Areal Flood Advisories in 2012
Areal Flood Advisory 48, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this areal flood advisory at Aug 11, 2012, 1:13 PM EDT for Franklin County, Hampden County, Hampshire County, Massachusetts; Capitol Planning Region, Connecticut. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Aug 11, 2012, 1:13 PM EDT (17:13 UTC)
- Expired
- Aug 11, 2012, 2:03 PM EDT
- In force
- 50 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Capitol Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA
The radar
The Boston radar (KBOX), 125 km from the middle of the area, began a volume at 17:15 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
Albany, NY (KALY), launched 12:00Z, 5.2 hours before the alert went out and 113 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
- 225 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 600 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 105 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 advisory 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 advisory went out at Aug 11, 10:55 AM EDT, 2 hours 18 minutes earlier.
Area forecast discussion, Aug 11, 10:55 AM EDT, 2 hours 18 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 |
|---|---|---|---|---|
| Aug 10, 9:21 PM EDT | Special Marine Warning | BOX | 20 min | |
| Aug 11, 4:38 PM EDT | Special Weather Statement | BOX | Franklin | 52 min |
| Aug 11, 4:56 PM EDT | Severe Thunderstorm Warning | BOX | Franklin | 49 min |
| Aug 11, 5:14 PM EDT | Special Weather Statement | BOX | Hampshire | 46 min |
| Aug 11, 6:09 PM EDT | Special Weather Statement | BOX | Hampshire | 51 min |
Nearby
Areal Flood Advisories in Massachusetts, 2012Areal Flood Advisories in Connecticut, 2012Every areal flood advisory in 2012
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.