Alert archive / Massachusetts / Flood Watches in 2023

Flood Watch 2, NWS Boston/Norton, MA

July 3, 20239 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this flood watch at Jul 3, 2023, 10:13 AM EDT for 9 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Jul 3, 2023, 12:00 PM EDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued: Jul 3, 2023, 10:13 AM EDT (14:13 UTC)
In effect from: Jul 3, 2023, 12:00 PM EDT
Expired: Jul 4, 2023, 8:29 PM EDT
In force: 32 hr
Issued by: NWS Boston/Norton, MA
Flood severity: None

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Bristol County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 46 km from the middle of the area, began a volume at 14:15 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

Brookhaven, NY (KOKX), launched 12:00Z, 2.2 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 101 J/kg
Mixed-layer CIN: -209 J/kg
Mixed-layer LCL: 1170 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Boston/Norton, MA wrote its last area forecast discussion before this flood watch went out at Jul 3, 7:18 AM EDT, 2 hours 55 minutes earlier.

Area forecast discussion, Jul 3, 7:18 AM EDT, 2 hours 55 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jul 3, 4:45 AM EDT, 5 hours 28 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 8:36 PM EDT	Special Weather Statement	BOX	Hampden	54 min
Jul 2, 10:55 PM EDT	Special Weather Statement	BOX	Franklin, Hampshire	95 min
Jul 3, 12:08 AM EDT	Special Weather Statement	BOX	Hampden	37 min
Jul 3, 12:30 AM EDT	Special Weather Statement	BOX	Worcester	60 min
Jul 3, 1:24 AM EDT	Special Weather Statement	BOX	Middlesex, Norfolk, Worcester	81 min
Jul 3, 2:47 AM EDT	Special Weather Statement	BOX	Bristol, Plymouth	58 min
Jul 3, 6:56 PM EDT	Special Weather Statement	BOX	Franklin	64 min
Jul 3, 7:48 PM EDT	Flash Flood Warning	BOX	Franklin, Hampshire	104 min
Jul 3, 12:11 AM EDT	Special Weather Statement	BOX		64 min
Jul 3, 6:37 PM EDT	Special Weather Statement	BOX		53 min
Jul 3, 7:28 PM EDT	Special Weather Statement	BOX		62 min

Nearby

Flood Watches in Massachusetts, 2023 Flood Watches in Rhode Island, 2023 Flood Watches in Connecticut, 2023 Every flood watch in 2023

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.