Alert archive / Montana / Wind Chill Advisories in 2019

Wind Chill Advisory 6, NWS Missoula, MT

March 2, 20196 counties in Montana

NWS Missoula, MT issued this wind chill advisory at Mar 2, 2019, 2:03 PM MST for 6 counties in Montana. It took effect at Mar 2, 2019, 5:00 PM MST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Mar 2, 2019, 2:03 PM MST (21:03 UTC)
In effect from: Mar 2, 2019, 5:00 PM MST
Expired: Mar 3, 2019, 11:00 AM MST
In force: 18 hr
Issued by: NWS Missoula, MT

Counties Flathead County, MT, Lake County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Sanders County, MT

The radar

The Missoula radar (KMSX), 89 km from the middle of the area, began a volume at 21:07 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

Spokane, WA (KOTX), launched 12:00Z, 9.1 hours before the alert went out and 135 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: 822 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: 0 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 wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Missoula, MT wrote its last area forecast discussion before this wind chill advisory went out at Mar 2, 10:49 AM MST, 3 hours 14 minutes earlier.

Area forecast discussion, Mar 2, 10:49 AM MST, 3 hours 14 minutes before

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In the hours before

Local storm report, Mar 2, 9:20 AM MST, 4 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
920 AM MST SAT MAR 2 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0919 AM     SNOW             8 N FINLEY POINT        47.85N 114.04W
03/02/2019  M4.5 INCH        LAKE               MT   TRAINED SPOTTER

            SNOW ACCUMULATED YESTERDAY AFTERNOON THROUGH
            THE OVERNIGHT HOURS.

&&

Local storm report, Mar 2, 9:33 AM MST, 4 hours 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
933 AM MST SAT MAR 2 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0932 AM     SNOW             ANACONDA                46.13N 112.94W
03/02/2019  E3.0 INCH        DEER LODGE         MT   DEPT OF HIGHWAYS

            SNOW FELL OVERNIGHT.

&&

Local storm report, Mar 2, 9:35 AM MST, 4 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
935 AM MST SAT MAR 2 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 PM     HEAVY SNOW       LOLO                    46.76N 114.09W
03/01/2019  M5.0 INCH        MISSOULA           MT   NWS EMPLOYEE

            FELL IN 3 HOURS FROM A HEAVY SNOW BAND.

&&

Local storm report, Mar 2, 10:18 AM MST, 3 hours 45 minutes before

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<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.
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      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Mar 2, 1:09 PM MST, 54 minutes before

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<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.
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The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 1, 6:39 PM MST	Special Weather Statement	MSO	Missoula	36 min
Mar 1, 6:44 PM MST	Special Weather Statement	MSO	Granite	31 min
Mar 2, 9:44 AM MST	Wind Chill Warning	MSO	Deer Lodge, Flathead, Granite, Lake, Missoula, Powell and 3 more	25 hr

Nearby

Wind Chill Advisories in Montana, 2019 Every wind chill advisory in 2019

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.