Alert archive / Vermont / Special Weather Statements in 2021

Special Weather Statement, NWS Burlington, VT

December 4, 2021Franklin County, Grand Isle County, Lamoille County, Vermont

NWS Burlington, VT issued this special weather statement at Dec 4, 2021, 4:44 PM EST for Franklin County, Grand Isle County, Lamoille County, Vermont. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 4, 2021, 4:44 PM EST (21:44 UTC)
Expired: Dec 4, 2021, 5:30 PM EST
In force: 46 min
Issued by: NWS Burlington, VT

Counties Franklin County, VT, Grand Isle County, VT, Lamoille County, VT

The radar

The Burlington radar (KCXX), 41 km from the middle of the area, began a volume at 21:43 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

Gray, ME (KGYX), launched 12:00Z, 9.7 hours before the alert went out and 227 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1687 m above ground
0-6 km bulk shear: 97 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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>

What forecasters said that day

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

NWS Burlington, VT wrote its last area forecast discussion before this special weather statement went out at Dec 4, 4:13 PM EST, 31 minutes earlier.

Area forecast discussion, Dec 4, 4:13 PM EST, 31 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, Dec 4, 4:25 PM EST, 19 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>

In the hours before

Special weather statement, Dec 4, 3:01 PM EST, 1 hour 43 minutes before

Special Weather Statement
National Weather Service Burlington VT
301 PM EST Sat Dec 4 2021

NYZ028-VTZ001>003-005>008-010-016-017-042045-
Eastern Clinton-Western Franklin-Caledonia-Grand Isle-Eastern
Chittenden-Western Chittenden-Washington-Eastern
Franklin-Orleans-Lamoille-Orange-
301 PM EST Sat Dec 4 2021

...AN AREA OF HEAVY SNOW WILL AFFECT EAST CENTRAL CLINTON...
LAMOILLE...SOUTHWESTERN CALEDONIA...NORTHERN ORANGE...SOUTHWESTERN
ORLEANS...CENTRAL GRAND ISLE...NORTHEASTERN CHITTENDEN...WASHINGTON
AND CENTRAL FRANKLIN COUNTIES...

At 300 PM EST...an area of heavy snow was along a line extending from
Milton to near Waterbury to near Braintree Hill...and moving east at
45 mph.

Locations impacted include...
Barre, Montpelier, Morrisville, Cambridge, Waterbury Village,
Montgomery Center, Websterville, Westford, Worcester, Middlesex,
Marshfield, Cabot Village, Georgia, Waterville, Washington,
Morrisville Village, Woodbury, Grand Isle, St. Albans Town and
Newbury.

This includes the following highways...
 Interstate 89 between mile markers 38 and 65, and between mile
markers 100 and 119.
 Interstate 91 between mile markers 104 and 121.

  * winds in excess of 25 mph are possible with this area of heavy
  snow.

  * visibilities will drop quickly to less than a half mile in this
  area of heavy snow.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.

LAT...LON 4491 7262 4455 7212 4430 7204 4429 7206
      4427 7207 4427 7206 4423 7205 4419 7207
      4413 7203 4411 7206 4410 7205 4410 7203
      4409 7205 4408 7203 4407 7206 4403 7270
      4433 7275 4484 7351
TIME...MOT...LOC 2000Z 252DEG 41KT 4465 7318 4439 7280 4401 7265

Haynes

Special weather statement, Dec 4, 3:15 PM EST, 1 hour 29 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>

Special weather statement, Dec 4, 3:32 PM EST, 1 hour 12 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>

Special weather statement, Dec 4, 4:04 PM EST, 40 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>

Special weather statement, Dec 4, 4:07 PM EST, 37 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>

Special weather statement, Dec 4, 4:44 PM EST, 0 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 Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 4, 2:07 PM EST	Special Weather Statement	BTV	Chittenden	23 min
Dec 4, 2:25 PM EST	Special Weather Statement	BTV	Chittenden	50 min
Dec 4, 2:48 PM EST	Special Weather Statement	BTV	Addison	42 min
Dec 4, 3:01 PM EST	Special Weather Statement	BTV	Caledonia, Franklin, Grand Isle, Lamoille, Washington	44 min
Dec 4, 3:15 PM EST	Special Weather Statement	BTV	Chittenden	30 min
Dec 4, 3:23 PM EST	Wind Advisory	BTV	Addison, Caledonia, Chittenden, Essex, Franklin, Grand Isle and 5 more	59 hr
Dec 4, 3:32 PM EST	Special Weather Statement	BTV	Grand Isle	28 min
Dec 4, 4:04 PM EST	Special Weather Statement	BTV	Chittenden, Lamoille, Washington	41 min
Dec 4, 4:07 PM EST	Special Weather Statement	BTV	Franklin, Grand Isle	38 min
Dec 4, 2:21 PM EST	Special Weather Statement	BTV	St. Lawrence	39 min
Dec 4, 2:56 PM EST	Special Weather Statement	BTV	Franklin	34 min

Nearby

Special Weather Statements in Vermont, 2021 Every special weather statement in 2021

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.