Alert archive / Colorado / Mesoscale Discussions in 2004
Mesoscale Discussion 1782
The Storm Prediction Center issued this mesoscale discussion at Jul 27, 2004, 12:05 PM MDT for 17 counties in Colorado; White Pine County, Nevada; 9 counties in Utah. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 27, 2004, 12:05 PM MDT (18:05 UTC)
- Expired
- Jul 27, 2004, 2:30 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Archuleta County, CO, Conejos County, CO, Delta County, CO, Dolores County, CO, Gunnison County, CO, Hinsdale County, CO, La Plata County, CO, Mesa County, CO, Mineral County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, Pitkin County, CO, Rio Grande County, CO, Saguache County, CO, San Juan County, CO, San Miguel County, CO, White Pine County, NV, Beaver County, UT, Garfield County, UT, Iron County, UT, Kane County, UT, Millard County, UT, Piute County, UT, San Juan County, UT, Sevier County, UT, Wayne County, UT
The radar
The Grand Junction radar (KGJX), 209 km from the middle of the area, began a volume at 18:09 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 6.1 hours before the alert went out and 191 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1665 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
<!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>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 1:05 PM MDT | Severe Thunderstorm Watch | SPC | Dolores, Montezuma, Montrose, San Miguel | 5 hr |
| Jul 27, 2:01 PM MDT | Mesoscale Discussion | SPC | Dolores, Montezuma, Montrose, San Miguel | 119 min |
| Jul 27, 4:10 PM MDT | Mesoscale Discussion | SPC | Baca | 3 hr |
| Jul 27, 4:52 PM MDT | Mesoscale Discussion | SPC | Washington | 53 min |
Nearby
Mesoscale Discussions in Colorado, 2004Mesoscale Discussions in Utah, 2004Mesoscale Discussions in Nevada, 2004Every mesoscale discussion in 2004
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.