Alert archive / Montana / Special Weather Statements in 2016

Special Weather Statement, NWS Great Falls, MT

June 21, 2016Fergus County, Montana

NWS Great Falls, MT issued this special weather statement at Jun 21, 2016, 2:39 PM MDT for Fergus County, Montana. It was in force for 36 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: Jun 21, 2016, 2:39 PM MDT (20:39 UTC)
Expired: Jun 21, 2016, 3:15 PM MDT
In force: 36 min
Issued by: NWS Great Falls, MT

County Fergus County, MT

The radar

The Great Falls radar (KTFX), 174 km from the middle of the area, began a volume at 20:39 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

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.7 hours before the alert went out and 198 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: 2556 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Great Falls, MT wrote its last area forecast discussion before this special weather statement went out at Jun 21, 11:30 AM MDT, 3 hours 9 minutes earlier.

Area forecast discussion, Jun 21, 11:30 AM MDT, 3 hours 9 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Special weather statement, Jun 21, 12:24 PM MDT, 2 hours 15 minutes before

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  <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Jun 21, 12:53 PM MDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1253 PM MDT TUE JUN 21 2016

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

1226 PM     HAIL             12 E LEDGER             48.29N 111.57W
06/21/2016  M0.25 INCH       TOOLE              MT   TRAINED SPOTTER

            STRONG WIND ACCOMPANIED THE STORM...BUT NO ESTIMATE
            GIVEN.

&&

MARTIN

Special weather statement, Jun 21, 1:02 PM MDT, 1 hour 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
102 PM MDT TUE JUN 21 2016

MTZ011-044-045-211945-
TOOLE MT-HILL MT-LIBERTY MT-
102 PM MDT TUE JUN 21 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LIBERTY...EASTERN TOOLE
AND WEST CENTRAL HILL COUNTIES UNTIL 145 PM MDT...

AT 101 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A STRONG
THUNDERSTORM NEAR LOTHAIR...OR 8 MILES SOUTHWEST OF CHESTER...MOVING
EAST AT 55 MPH. AN ADDITIONAL STRONG THUNDERSTORM WAS DEVELOPING
NORTHWEST OF CHESTER.

WIND GUSTS UP TO 50 MPH AND PEA SIZE HAIL ARE LIKELY WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
CHESTER...JOPLIN...LOTHAIR...INVERNESS...HINGHAM AND RUDYARD.

LAT...LON 4832 11126 4865 11128 4874 11038 4837 11031
TIME...MOT...LOC 1901Z 260DEG 49KT 4843 11110

MARTIN

Special weather statement, Jun 21, 1:48 PM MDT, 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
148 PM MDT TUE JUN 21 2016

MTZ011-212030-
HILL MT-
148 PM MDT TUE JUN 21 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HILL COUNTY UNTIL 230 PM
MDT...

AT 148 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A STRONG
THUNDERSTORM NEAR GILDFORD...OR 22 MILES NORTHWEST OF BIG SANDY...
MOVING EAST AT 55 MPH.

WIND GUSTS UP TO 50 MPH AND PEA SIZE HAIL WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
HAVRE...GILDFORD...BEAVER CREEK...HINGHAM...LAREDO...
RUDYARD AND KREMLIN.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4834 11059 4864 11064 4882 10952 4839 10953
TIME...MOT...LOC 1948Z 260DEG 49KT 4848 11032

MARTIN

Special weather statement, Jun 21, 2:39 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
239 PM MDT TUE JUN 21 2016

MTZ013-047-050-051-212115-
FERGUS MT-BLAINE MT-JUDITH BASIN MT-CHOUTEAU MT-
239 PM MDT TUE JUN 21 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CHOUTEAU...
NORTHEASTERN JUDITH BASIN...SOUTHWESTERN BLAINE AND FERGUS COUNTIES
UNTIL 315 PM MDT...

AT 233 PM MDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORM
OUTFLOW WINDS ALONG A LINE EXTENDING FROM 14 MILES SOUTH OF PARKER
SCHOOL TO 21 MILES NORTH OF DENTON TO 12 MILES SOUTH OF GERALDINE.
MOVEMENT WAS SOUTHEAST AT 65 MPH. WIND GUSTS REACHED 56 MPH WITH THE
OUTFLOW WINDS AS THEY MOVED THROUGH LOMA.

WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH THE OUTFLOW
BOUNDARY. SHOWERS OR THUNDERSTORMS MAY NOT BE PRESENT WITH THE
STRONG WINDS.

LOCATIONS IMPACTED INCLUDE...
LEWISTOWN...DENTON...WINIFRED...ROY...FERGUS...SUFFOLK...CHRISTINA...
GILTEDGE...COFFEE CREEK...ILIAD...SQUARE BUTTE...JUDITH LANDING...
DANVERS...GLENGARRY AND HILGER.

LAT...LON 4724 10878 4695 10938 4742 11049 4766 10997
      4813 10972 4790 10889 4774 10890 4771 10882
      4765 10877 4764 10872 4762 10868 4763 10861
      4761 10857
TIME...MOT...LOC 2033Z 297DEG 57KT 4804 10968 4764 10990 4743 11032

MARTIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 12:24 PM MDT	Special Weather Statement	TFX	Liberty	36 min
Jun 21, 1:02 PM MDT	Special Weather Statement	TFX	Liberty	43 min
Jun 21, 1:48 PM MDT	Special Weather Statement	TFX	Hill	42 min
Jun 21, 2:56 PM MDT	Special Weather Statement	TFX	Blaine	34 min
Jun 21, 3:18 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	42 min

Nearby

Special Weather Statements in Montana, 2016 Every special weather statement in 2016

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.