Alert archive / Wyoming / Special Weather Statements in 2019

Special Weather Statement, NWS Cheyenne, WY

August 15, 2019Niobrara County, Wyoming

NWS Cheyenne, WY issued this special weather statement at Aug 15, 2019, 1:08 PM MDT for Niobrara County, Wyoming. It was in force for 52 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: Aug 15, 2019, 1:08 PM MDT (19:08 UTC)
Expired: Aug 15, 2019, 2:00 PM MDT
In force: 52 min
Issued by: NWS Cheyenne, WY

County Niobrara County, WY

The radar

The Cheyenne radar (KCYS), 198 km from the middle of the area, began a volume at 19:09 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 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 Cheyenne, WY wrote its last area forecast discussion before this special weather statement went out at Aug 15, 11:00 AM MDT, 2 hours 8 minutes earlier.

Area forecast discussion, Aug 15, 11:00 AM MDT, 2 hours 8 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, Aug 15, 10:43 AM MDT, 2 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
1043 AM MDT Thu Aug 15 2019

NEZ002-003-019-021-095-096-WYZ101-102-107-108-161000-
Dawes-Box Butte-Scotts Bluff-Morrill-North Sioux-South Sioux-
Converse County Lower Elevations-Niobrara County-
East Platte County-Goshen County-
1043 AM MDT Thu Aug 15 2019

This hazardous weather outlook is for portions of western
Nebraska...east central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms will be possible this afternoon with a few
strong storms possible. A somewhat greater threat for scattered
strong to severe storms is expected later tonight with large hail
the main threat.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Widely scattered showers and storms are expected mainly on Friday,
with a few of the storms possibly becoming severe, mainly over the
Nebraska Panhandle.

.Spotter information statement...

Spotter activation is not expected at this time.

NEZ020-054-055-WYZ103>106-109>119-161000-
Banner-Kimball-Cheyenne-North Laramie Range-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Laramie Range and Southwest Platte County-
Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-Sierra Madre Range-
Upper North Platte River Basin-Snowy Range-Laramie Valley-
South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
1043 AM MDT Thu Aug 15 2019

This hazardous weather outlook is for portions of western
Nebraska...south central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Isolated showers and thunderstorms are possible into this evening
but the severe threat is low.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The probability for widespread hazardous weather is low.

.Spotter information statement...

Spotter activation will not be needed.

In the hours before

Local storm report, Aug 15, 8:07 AM MDT, 5 hours 1 minute 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>

Local storm report, Aug 15, 8:41 AM MDT, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHEYENNE WY
841 AM MDT THU AUG 15 2019

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

1245 AM     HAIL             13 NW MULE CREEK JUNCTI 43.50N 104.42W
08/15/2019  E2.00 INCH       WESTON             WY   PUBLIC

            ON WESTON AND NIOBRARA COUNTY LINE.

0154 AM     HAIL             8 N MULE CREEK JUNCTION 43.50N 104.20W
08/15/2019  E2.00 INCH       NIOBRARA           WY   PUBLIC

            DELAYED REPORT. HAIL DRIFTS ALONG HIGHWAY 85 NORTH OF
            MULE CREEK JUNCTION. AT 825 AM HAIL DRIFTS UP TO 1.5 FEET
            STILL EXIST. TIME ESTIMATED FROM RADAR.

0206 AM     TSTM WND DMG     9 NE HARRISON           42.78N 103.76W
08/15/2019                   SIOUX              NE   CO-OP OBSERVER

            COOP OBSERVER SUGGESTED SHE HAD STRONG WINDS OVERNIGHT,
            WITH LARGE TREE LIMBS REPORTED DOWN.

0300 AM     HAIL             7 NE LANCE CREEK        43.09N 104.54W
08/15/2019  E1.75 INCH       NIOBRARA           WY   TRAINED SPOTTER

            HAIL STRIPPED TREES ON RESIDENTS PROPERTY.

0300 AM     HAIL             7 NE LANCE CREEK        43.09N 104.54W
08/15/2019  E1.75 INCH       NIOBRARA           WY   TRAINED SPOTTER

            HAIL STRIPPED TREES ON PROPERTY.

&&

GCLAYCOM

Special weather statement, Aug 15, 1:08 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service Cheyenne WY
108 PM MDT Thu Aug 15 2019

WYZ101-102-152000-
Converse County Lower Elevations WY-Niobrara County WY-
108 PM MDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN NIOBRARA AND EAST
CENTRAL CONVERSE COUNTIES UNTIL 200 PM MDT...

At 108 PM MDT, Doppler radar was tracking a strong thunderstorm near
Manning Ranch, or 24 miles northwest of Lusk, moving southeast at
40 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Lusk, Manville, Keeline, Lance Creek and Manning Ranch.

LAT...LON 4297 10502 4311 10490 4297 10421 4262 10465
TIME...MOT...LOC 1908Z 305DEG 39KT 4297 10484

Claycomb

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 15, 12:34 AM MDT	Severe Thunderstorm Warning	CYS	Niobrara	56 min
Aug 15, 1:42 AM MDT	Severe Thunderstorm Warning	CYS	Niobrara	33 min
Aug 15, 2:15 AM MDT	Severe Thunderstorm Warning	CYS	Niobrara	45 min
Aug 15, 2:40 AM MDT	Fire Weather Watch	CYS		19 hr
Aug 15, 2:40 AM MDT	Red Flag Warning	CYS		17 hr
Aug 15, 2:53 AM MDT	Severe Thunderstorm Warning	CYS	Niobrara	37 min
Aug 15, 3:28 AM MDT	Severe Thunderstorm Warning	CYS	Niobrara	22 min
Aug 15, 3:50 AM MDT	Special Weather Statement	CYS	Niobrara	25 min
Aug 15, 1:31 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	21 min
Aug 15, 2:00 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Niobrara, Platte	30 min
Aug 15, 2:23 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	37 min
Aug 15, 2:46 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	44 min
Aug 15, 4:05 PM MDT	Special Weather Statement	CYS	Goshen	40 min
Aug 15, 4:23 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	29 min
Aug 15, 1:55 AM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sioux	50 min
Aug 15, 2:49 AM MDT	Special Weather Statement	CYS	Dawes	26 min
Aug 15, 3:19 AM MDT	Special Weather Statement	CYS	Dawes	26 min
Aug 15, 3:18 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	57 min
Aug 15, 3:59 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff	46 min
Aug 15, 4:43 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	77 min
Aug 15, 5:23 PM MDT	Special Weather Statement	CYS	Kimball	37 min

Nearby

Special Weather Statements in Wyoming, 2019 Every special weather statement 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; radar from the NEXRAD Level II archive.