Alert archive / Colorado / Special Weather Statements in 2017

Special Weather Statement, NWS Grand Junction, CO

August 5, 2017Garfield County, Colorado

NWS Grand Junction, CO issued this special weather statement at Aug 5, 2017, 3:36 PM MDT for Garfield County, Colorado. It was in force for 39 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 5, 2017, 3:36 PM MDT (21:36 UTC)
Expired
Aug 5, 2017, 4:15 PM MDT
In force
39 min
Issued by
NWS Grand Junction, CO

County Garfield County, CO

The radar

The Grand Junction radar (KGJX), 77 km from the middle of the area, began a volume at 21:36 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.

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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 Grand Junction, CO wrote its last area forecast discussion before this special weather statement went out at Aug 5, 2:47 PM MDT, 49 minutes earlier.

Area forecast discussion, Aug 5, 2:47 PM MDT, 49 minutes before
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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.
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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 5, 5:34 AM MDT, 10 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
534 AM MDT Sat Aug 5 2017

COZ001>014-017>023-UTZ022>025-027>029-061200-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
534 AM MDT Sat Aug 5 2017

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected today and
tonight across eastern Utah and western Colorado. Locally heavy
rain, small hail and gusty winds to 40 mph are all possible with
the strongest storms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Isolated to scattered showers and thunderstorms are expected each
day next week with gusty outflow winds, small hail and heavy rain
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight, however
spotters are encouraged to relay rainfall amounts or any observed
flooding to the National Weather Service in Grand Junction.

In the hours before

Special weather statement, Aug 5, 3:36 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Grand Junction CO
336 PM MDT SAT AUG 5 2017

COZ003-007-013-052215-
Roan and Tavaputs Plateaus CO-Debeque to Silt Corridor CO-
Flattops CO-
336 PM MDT SAT AUG 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GARFIELD COUNTY UNTIL 415
PM MDT...

At 335 PM MDT, Doppler radar was tracking a strong thunderstorm 16
miles northwest of Rifle, or 34 miles northwest of Glenwood Springs,
moving southeast at 10 mph.

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

Locations impacted include...
Rio Blanco.

This includes Colorado 13 between mile markers 6 and 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3969 10806 3985 10796 3978 10766 3954 10782
TIME...MOT...LOC 2135Z 297DEG 7KT 3974 10793

NL

The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 5, 3:47 PM MDTSpecial Weather StatementGJTRio Blanco28 min
Aug 5, 3:50 PM MDTAreal Flood AdvisoryGJTRio Blanco3 hr
Aug 5, 4:08 PM MDTSpecial Weather StatementGJTDolores52 min
Aug 5, 4:30 PM MDTSpecial Weather StatementGJT45 min
Aug 5, 5:20 PM MDTSevere Thunderstorm WarningGJTGarfield, Rio Blanco25 min
Aug 5, 5:40 PM MDTSevere Thunderstorm WarningGJTMesa31 min
Aug 5, 5:50 PM MDTFlash Flood WarningGJTGarfield3 hr

Nearby

Special Weather Statements in Colorado, 2017Every special weather statement in 2017

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.