Alert archive / Colorado / Special Weather Statements in 2020

Special Weather Statement, NWS Denver/Boulder, CO

August 6, 2020Elbert County, Colorado

NWS Denver/Boulder, CO issued this special weather statement at Aug 6, 2020, 12:38 PM MDT for Elbert County, Colorado. It was in force for 37 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, 2020, 12:38 PM MDT (18:38 UTC)
Expired: Aug 6, 2020, 1:15 PM MDT
In force: 37 min
Issued by: NWS Denver/Boulder, CO

County Elbert County, CO

The radar

The Denver radar (KFTG), 51 km from the middle of the area, began a volume at 18:39 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

Denver, CO (KDNR), launched 12:00Z, 6.6 hours before the alert went out and 92 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: 116 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 2239 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 53 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 Denver/Boulder, CO wrote its last area forecast discussion before this special weather statement went out at Aug 6, 10:27 AM MDT, 2 hours 11 minutes earlier.

Area forecast discussion, Aug 6, 10:27 AM MDT, 2 hours 11 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.
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Hazardous weather outlook, Aug 6, 10:51 AM MDT, 1 hour 47 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1051 AM MDT Thu Aug 6 2020

COZ030>051-071700-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1051 AM MDT Thu Aug 6 2020

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Isolated to scattered showers and thunderstorms are expected to
develop today over the mountains and foothills by early afternoon.
They will move eastward onto the plains by mid afternoon. The
stronger storms will be found over the eastern plains where heavy
rain, wind gusts to 45 mph, and hail up to three quarters of an
inch in diameter will be possible. A severe thunderstorm or two
can't be ruled out as well.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Hot and dry weather is expected over the weekend with increasing
fire danger. There may be an isolated severe thunderstorm near
the northeast corner of Colorado late Saturday. Isolated
thunderstorms will return by the middle of next week, but mainly
over the mountains and near the eastern border.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Special weather statement, Aug 6, 12:38 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service Denver CO
1238 PM MDT Thu Aug 6 2020

COZ046-061915-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County CO-
1238 PM MDT Thu Aug 6 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL ELBERT COUNTY UNTIL
115 PM MDT...

At 1238 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Agate, or 26 miles northwest of Limon, moving northeast
at 5 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

This storm will remain over mainly rural areas of north central
Elbert County.

LAT...LON 3939 10417 3942 10418 3943 10417 3945 10417
      3947 10419 3948 10419 3948 10420 3956 10422
      3956 10402 3943 10397 3940 10413 3941 10414
      3940 10415 3939 10415
TIME...MOT...LOC 1838Z 246DEG 6KT 3945 10414

MEIER

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 5, 6:25 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	23 min
Aug 5, 8:46 PM MDT	Severe Thunderstorm Warning	BOU	Sedgwick	44 min
Aug 6, 2:51 PM MDT	Severe Thunderstorm Warning	BOU	Weld	39 min
Aug 6, 3:02 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	28 min
Aug 6, 4:19 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	41 min
Aug 6, 4:25 PM MDT	Severe Thunderstorm Warning	BOU	Logan	50 min
Aug 6, 5:34 PM MDT	Areal Flood Advisory	BOU	Logan	97 min

Nearby

Special Weather Statements in Colorado, 2020 Every special weather statement in 2020

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.