Alert archive / Wyoming / Special Weather Statements in 2022

Special Weather Statement, NWS Cheyenne, WY

August 6, 2022Goshen County, Wyoming

NWS Cheyenne, WY issued this special weather statement at Aug 6, 2022, 6:55 PM MDT for Goshen County, Wyoming. It was in force for 50 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 6, 2022, 6:55 PM MDT (00:55 UTC)
Expired
Aug 6, 2022, 7:45 PM MDT
In force
50 min
Issued by
NWS Cheyenne, WY
Hail
0.75 in
Wind
50

County Goshen County, WY

The radar

The Cheyenne radar (KCYS), 67 km from the middle of the area, began a volume at 00:58 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

Rapid City, SD (KUNR), launched 00:00Z, 0.9 hours before the alert went out and 298 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-pSkew-T log-p diagram, Rapid City, SD at 00:00Z on 2022-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 00:00Z on 2022-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1613 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
182 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 Cheyenne, WY wrote its last area forecast discussion before this special weather statement went out at Aug 6, 5:46 PM MDT, 1 hour 9 minutes earlier.

Area forecast discussion, Aug 6, 5:46 PM MDT, 1 hour 9 minutes before
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  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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>
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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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Hazardous weather outlook, Aug 6, 11:09 AM MDT, 7 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
1109 AM MDT Sat Aug 6 2022

NEZ002-003-019>021-054-055-095-096-WYZ101>119-071715-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen 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-
1109 AM MDT Sat Aug 6 2022

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered showers and thunderstorms will develop across southeast
Wyoming and the western Nebraska Panhandle this afternoon and
evening. Isolated strong to severe thunderstorms are possible along
and east of the Laramie Range. Hail up to one inch in diameter,
wind gusts to 60 mph, and heavy rain will be the primary hazards.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

Scattered showers and thunderstorms can be expected Sunday afternoon
and evening, mainly over the higher terrain of southeast Wyoming.
Gusty winds, small hail and locally heavy rainfall are possible.

.Spotter information statement...

Spotters are encouraged to report significant weather to the
National Weather Service in Cheyenne.

In the hours before

Special weather statement, Aug 6, 6:03 PM MDT, 52 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
603 PM MDT Sat Aug 6 2022

WYZ106>108-117-118-070045-
East Platte County WY-
Central Laramie Range and Southwest Platte County WY-
Goshen County WY-Central Laramie County WY-
South Laramie Range Foothills WY-
603 PM MDT Sat Aug 6 2022

...A strong thunderstorm will impact portions of southwestern Goshen,
northwestern Laramie and southeastern Platte Counties through 645 PM
MDT...

At 603 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Chugwater, or 23 miles south of Wheatland, moving
northeast at 20 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Chugwater and Slater.

This includes Interstate 25 in Wyoming between mile markers 47 and
67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4161 10495 4171 10510 4195 10486 4174 10458
TIME...MOT...LOC 0003Z 228DEG 18KT 4171 10499

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Natoli
Local storm report, Aug 6, 6:20 PM MDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
620 PM MDT SAT AUG 6 2022

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

0512 PM     HEAVY RAIN       10 SSE CHUGWATER        41.62N 104.75W
08/06/2022  E2.00 INCH       LARAMIE            WY   PUBLIC

            REPORT RECEIVED VIA FACEBOOK. PEA TO MARBLE SIZED HAIL.
            STRONG WINDS FROM THE EAST.

&&

GCC
Special weather statement, Aug 6, 6:55 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
655 PM MDT Sat Aug 6 2022

WYZ106>108-070145-
East Platte County WY-
Central Laramie Range and Southwest Platte County WY-
Goshen County WY-
655 PM MDT Sat Aug 6 2022

...A strong thunderstorm will impact portions of southwestern Goshen
and southeastern Platte Counties through 745 PM MDT...

At 655 PM MDT, Doppler radar was tracking a strong thunderstorm near
Chugwater, or 25 miles southeast of Wheatland, moving east at 15 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Chugwater and Slater.

This includes Interstate 25 in Wyoming between mile markers 49 and
53, and between mile markers 56 and 59.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4167 10485 4180 10481 4191 10451 4168 10445
TIME...MOT...LOC 0055Z 251DEG 15KT 4172 10475

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Natoli

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 6:03 PM MDTSpecial Weather StatementCYSPlatte42 min
Aug 6, 10:49 PM MDTSpecial Weather StatementCYSPlatte41 min
Aug 6, 11:49 PM MDTSpecial Weather StatementCYSNiobrara41 min

Nearby

Special Weather Statements in Wyoming, 2022Every special weather statement in 2022

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.