Alert archive / Colorado / Special Weather Statements in 2015
Special Weather Statement, NWS Grand Junction, CO
NWS Grand Junction, CO issued this special weather statement at Aug 3, 2015, 2:16 PM MDT for Pitkin County, Colorado. It was in force for 29 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 3, 2015, 2:16 PM MDT (20:16 UTC)
- Expired
- Aug 3, 2015, 2:45 PM MDT
- In force
- 29 min
- Issued by
- NWS Grand Junction, CO
County Pitkin County, CO
The radar
The Grand Junction radar (KGJX), 88 km from the middle of the area, began a volume at 20:19 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
Grand Junction, CO (KGJT), launched 12:00Z, 8.3 hours before the alert went out and 108 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
- 37 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1396 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 113 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>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 3, 1:00 PM MDT, 1 hour 16 minutes earlier.
Area forecast discussion, Aug 3, 1:00 PM MDT, 1 hour 16 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 3, 5:30 AM MDT, 8 hours 46 minutes before
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
In the hours before
Special weather statement, Aug 3, 2:16 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 216 PM MDT MON AUG 3 2015 COZ008>010-012-013-032045- GRAND AND BATTLEMENT MESAS CO-CENTRAL COLORADO RIVER BASIN CO- FLATTOPS CO-WEST ELK AND SAWATCH MOUNTAINS CO- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS CO- 216 PM MDT MON AUG 3 2015 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL EAGLE...NORTHWESTERN PITKIN AND SOUTHEASTERN GARFIELD COUNTIES UNTIL 245 PM MDT... AT 215 PM MDT...DOPPLER RADAR WAS TRACKING AN AREA OF THUNDERSTORMS NEAR GLENWOOD SPRINGS...MOVING NORTHEAST AT 30 MPH. BRIEF HEAVY RAIN AND OCCASIONAL LIGHTNING CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. WINDS IN EXCESS OF 40 MPH WILL ALSO BE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... GLENWOOD SPRINGS...CARBONDALE...DOTSERO...CATTLE CREEK...SHOSHONE AND EL JEBEL. LAT...LON 3919 10749 3949 10749 3974 10712 3951 10692 TIME...MOT...LOC 2015Z 235DEG 25KT 3947 10735 TGR
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 6:17 PM MDT | Special Weather Statement | GJT | Garfield | 43 min |
| Aug 2, 7:38 PM MDT | Special Weather Statement | GJT | Moffat | 52 min |
| Aug 3, 4:45 PM MDT | Special Weather Statement | GJT | Dolores | 30 min |
| Aug 3, 5:41 PM MDT | Flash Flood Warning | GJT | Dolores, San Miguel | 2 hr |
| Aug 3, 5:59 PM MDT | Areal Flood Advisory | GJT | Dolores | 3 hr |
| Aug 2, 7:25 PM MDT | Flash Flood Warning | GJT | San Juan | 3 hr |
Nearby
Special Weather Statements in Colorado, 2015Every special weather statement in 2015
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.