Alert archive / Arizona / Special Weather Statements in 2011
Special Weather Statement, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this special weather statement at Aug 4, 2011, 1:53 PM MST for Coconino County, Arizona. 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 4, 2011, 1:53 PM MST (20:53 UTC)
- Expired
- Aug 4, 2011, 2:30 PM MST
- In force
- 37 min
- Issued by
- NWS Flagstaff, AZ
County Coconino County, AZ
The radar
The Cedar City radar (KICX), 179 km from the middle of the area, began a volume at 20:55 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
Phoenix, AZ (KPSR), launched 12:00Z, 8.9 hours before the alert went out and 296 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
- 80 J/kg
- Mixed-layer CIN
- -438 J/kg
- Mixed-layer LCL
- 2540 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</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 Flagstaff, AZ wrote its last area forecast discussion before this special weather statement went out at Aug 4, 9:00 AM MST, 4 hours 53 minutes earlier.
Area forecast discussion, Aug 4, 9:00 AM MST, 4 hours 53 minutes before
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</head>
<body>
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>Hazardous weather outlook, Aug 4, 6:00 AM MST, 7 hours 53 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 600 AM MST THU AUG 4 2011 AZZ004>018-037>040-050945- KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY- COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS- NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY- CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS- NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS- OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA- NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264- 600 AM MST THU AUG 4 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ARIZONA...NORTH CENTRAL ARIZONA...NORTHEAST ARIZONA AND WEST CENTRAL ARIZONA. .DAY ONE...TODAY AND TONIGHT A MODESTLY MOIST AIR MASS WILL REMAIN OVER NORTHERN ARIZONA FOR TODAY...WITH SCATTERED THUNDERSTORMS FORMING FROM LATE THIS MORNING INTO THE EVENING. THREATS FROM THE STORMS INCLUDE HEAVY RAINFALL AND CLOUD TO GROUND LIGHTNING. RECENT BURN AREAS...INCLUDING THE SCHULTZ...WALLOW...AND LOCUST ARE VULNERABLE TO FLOODING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SOUTHWEST FLOW ALOFT IS EXPECTED TO DECREASE MONSOONAL MOISTURE WITH THUNDERSTORM COVERAGE DECREASING SIGNIFICANTLY ACROSS THE NORTHLAND. STILL...CHANCES FOR SHOWERS WILL PERSIST...MAINLY ACROSS THE WHITE MOUNTAINS AND CHUSKA MOUNTAINS OF FAR EASTERN ARIZONA. MOISTURE MAY RETURN GRADUALLY EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, Aug 4, 1:53 PM MST, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 153 PM MST THU AUG 4 2011 AZZ004-006-007-042130- COCONINO AZ- 153 PM MST THU AUG 4 2011 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA UNTIL 230 PM MST AT 147 PM MST...RADAR DETECTED A STRONG THUNDERSTORM NEAR TUSAYAN AND THE GRAND CANYON VILLAGE...MOVING NORTHEAST AT 10 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS IMPACTED INCLUDE... HERMITS REST AT GRAND CANYON... TUSAYAN... SOUTH RIM VISITORS CENTER AND TUSAYAN... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN A STURDY BUILDING. && LAT...LON 3621 11210 3602 11196 3591 11225 3607 11235 TIME...MOT...LOC 2051Z 254DEG 9KT 3601 11223 RB/CO
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 2:26 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Aug 4, 3:37 PM MST | Areal Flood Advisory | FGZ | Navajo | 3 hr |
| Aug 4, 4:00 PM MST | Flash Flood Warning | FGZ | Navajo | 91 min |
| Aug 4, 4:14 PM MST | Special Weather Statement | FGZ | 46 min |
Nearby
Special Weather Statements in Arizona, 2011Every special weather statement in 2011
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.