Alert archive / Colorado / Red Flag Warnings in 2009
Red Flag Warning 5, NWS Grand Junction, CO
NWS Grand Junction, CO issued this red flag warning at May 11, 2009, 3:17 PM MDT for 7 counties in Colorado. It took effect at May 12, 2009, 10:00 AM MDT. It was in force for 11 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 11, 2009, 3:17 PM MDT (21:17 UTC)
- In effect from
- May 12, 2009, 10:00 AM MDT
- Expired
- May 12, 2009, 9:00 PM MDT
- In force
- 11 hr
- Issued by
- NWS Grand Junction, CO
Counties Dolores County, CO, La Plata County, CO, Moffat County, CO, Montezuma County, CO, Rio Blanco County, CO, Routt County, CO, San Miguel County, CO
The radar
The Grand Junction radar (KGJX), 33 km from the middle of the area, began a volume at 21:22 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
Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 9.3 hours before the alert went out and 436 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
- 2008 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this red flag warning 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 red flag warning went out at May 11, 3:46 AM MDT, 11 hours 31 minutes earlier.
Area forecast discussion, May 11, 3:46 AM MDT, 11 hours 31 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, May 11, 5:45 AM MDT, 9 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 545 AM MDT MON MAY 11 2009 COZ001>014-017>023-UTZ022>025-027>029-121145- ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES- CENTRAL COLORADO RIVER BASIN- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- CENTRAL YAMPA RIVER BASIN-DEBEQUE TO SILT CORRIDOR- EASTERN UINTA BASIN-EASTERN UINTA MOUNTAINS- ELKHEAD AND PARK MOUNTAINS-FLAT TOPS- FOUR CORNERS/UPPER DOLORES RIVER- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS- GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN- NORTHWEST SAN JUAN MOUNTAINS-PARADOX VALLEY/LOWER DOLORES RIVER- ROAN AND TAVAPUTS PLATEAUS-SAN JUAN RIVER BASIN-SOUTHEAST UTAH- SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY- UPPER YAMPA RIVER BASIN-WEST ELK AND SAWATCH MOUNTAINS- 545 AM MDT MON MAY 11 2009 ...FIRE WEATHER WATCH IS IN EFFECT FOR NORTHWEST COLORADO FROM LATE TUESDAY MORNING THROUGH TUESDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS EAST CENTRAL UTAH AND WEST CENTRAL COLORADO LATE THIS AFTERNOON AND LINGER THROUGH TONIGHT. GUSTY WINDS TO NEAR 45 MPH WILL ACCOMPANY THE SHOWERS AND THUNDERSTORMS. THE GUNNISON RIVER THROUGH THE BLACK CANYON...AS WELL AS OTHER RIVERS AND STREAMS ACROSS WESTERN COLORADO AND EASTERN UTAH WILL CONTINUE TO RUN HIGH DUE TO THE MELTING OF THE MOUNTAIN SNOW PACK. CAUTION IS URGED WHEN WALKING OR RECREATING NEAR RIVERBANKS AND WATERWAYS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... GUSTY SOUTHWEST WINDS TO NEAR 45 MPH WILL TEAM UP WITH LOW RELATIVE HUMIDITIES AND DRY FUELS TUESDAY AFTERNOON AND EVENING...CREATING THE POTENTIAL FOR CRITICAL FIRE WEATHER CONDITIONS. AS A RESULT...A FIRE WEATHER WATCH WILL BE IN EFFECT FOR NORTHWEST COLORADO FROM LATE TUESDAY MORNING THROUGH TUESDAY EVENING. SEE DENRFWGJT FOR MORE INFORMATION...OR VISIT THE NATIONAL WEATHER SERVICE GRAND JUNCTION WEB SITE AT WEATHER.GOV.GJT. THERE IS A CHANCE OF SHOWERS AND THUNDERSTORMS FAVORING THE NORTHERN MOUNTAINS TUESDAY EVENING AND AGAIN THURSDAY NIGHT THROUGH FRIDAY NIGHT. RIVER AND STREAM FLOWS WILL CONTINUE TO RUN HIGH THROUGH SUNDAY DUE TO SNOW MELTING OFF THE HIGHER MOUNTAINS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. JDC/JOE
In the hours before
Special weather statement, May 11, 9:37 AM MDT, 5 hours 40 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>The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 6:46 AM MDT | Fire Weather Watch | GJT | Moffat, Rio Blanco, Routt | 9 hr |
| May 11, 10:08 AM MDT | River Flood Advisory | GJT | Routt | 56 hr |
Nearby
Red Flag Warnings in Colorado, 2009Every red flag warning in 2009
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.