Alert archive / Arizona / Flash Flood Warnings in 2009
Flash Flood Warning 12, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Sep 19, 2009, 2:30 PM MST for Gila County, Arizona. It was in force for 87 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 19, 2009, 2:30 PM MST (21:30 UTC)
- Expired
- Sep 19, 2009, 3:57 PM MST
- In force
- 87 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Gila County, AZ
The radar
The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 21:33 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.5 hours before the alert went out and 183 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
- 96 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1467 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning 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 flash flood warning went out at Sep 19, 9:38 AM MST, 4 hours 52 minutes earlier.
Area forecast discussion, Sep 19, 9:38 AM MST, 4 hours 52 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 938 AM MST SAT SEP 19 2009 .SYNOPSIS...ANOTHER ROUND OF WIDELY SCATTERED SHOWERS AND THUNDERSTORMS IS EXPECTED TODAY AS MOISTURE REMAINS ACROSS THE REGION. DRIER AIR WILL MOVE INTO THE STATE EARLY NEXT WEEK AS HIGH PRESSURE BUILDS TO OUR NORTH. COOLER CONDITIONS UNDER BREEZY NORTHEAST FLOW WILL PERSIST INTO MIDWEEK. && .DISCUSSION...A FEW SHOWERS...MAINLY IN APACHE COUNTY ARE ALREADY UNDER WAY THIS MORNING ACROSS NORTHERN ARIZONA. LOOK FOR THESE STORMS TO BECOME A BIT MORE NUMEROUS AS WE HEAD INTO THE AFTERNOON. TEMPS TODAY WILL BE NEAR DAILY NORMS. CURRENT FORECAST ZONES/GRIDS SEEM TO REPRESENT THIS SHORT-TERM SCENARIO WELL...WITH NO MAJOR UPDATES PLANNED. && .PREV DISCUSSION /355 AM MST/...A WEAK TROUGH MOVING ACROSS THE PACIFIC RIDGE WILL INDUCE SOUTHWESTERLY FLOW TODAY. THIS WILL KEEP JUST ENOUGH MOISTURE ACROSS THE REGION FOR CONTINUED ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS. THE BEST CHANCE WILL BE SOUTHEAST OF FLAGSTAFF WHERE COLDER TEMPERATURES ALOFT STILL LINGER FROM A WEAK UPPER LOW NOW OVER NEW MEXICO. BY SUNDAY...THE PACIFIC RIDGE WILL MOVE INTO THE GREAT BASIN...WITH WARMER AND DRIER CONDITIONS OVER ARIZONA. EARLY NEXT WEEK...A STRONGER S/WV MOVING AROUND THE RIDGE AND DOWN THE FRONT RANGE WILL PUSH A DRY COLD FRONT AND GUSTY NORTHEAST WINDS INTO THE STATE. MOST MODELS KEEP THIS WAVE EAST OF ARIZONA AS IT CUTS OFF...BUT THE GFS RETROGRADES THIS LOW INTO ARIZONA. THIS SEEMS LIKE AN UNLIKELY SCENARIO FOR NOW. WE WILL KEEP THE FORECAST ON THE COOL SIDE WITH DAILY NORTHEAST WINDS...BUT WILL KEEP POPS OUT OF THE PICTURE. && .AVIATION...FOR THE 18Z PACKAGE...ISOLD-SCT SHRA/TSRA WILL DEVELOP BTWN 18-22Z WITH ACTIVITY DIMINISHING 02-04Z. LCL MVFR PSBL IN THE STRONGEST STORMS. AVIATION DISCUSSION NOT UPDATED FOR AMENDMENTS. && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC.......................KD AVIATION/FIRE WEATHER........DB VISIT WEATHER.GOV/FLAGSTAFF FOR NORTHERN ARIZONA WEATHER INFORMATION.
Hazardous weather outlook, Sep 19, 9:42 AM MST, 4 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 942 AM MST SAT SEP 19 2009 AZZ004>018-037>040-200700- WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS- YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS- MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU- NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD- NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264- CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY- 942 AM MST SAT SEP 19 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY ENOUGH MOISTURE AND INSTABILITY WILL LINGER ACROSS NORTHERN ARIZONA FOR WIDELY SCATTERED THUNDERSTORMS TO DEVELOP TODAY AND CONTINUE INTO TONIGHT. THE BEST CHANCES OF STORMS WILL BE FOR HIGHER TERRAIN LOCATIONS SOUTHEAST OF A LINE FROM FLAGSTAFF TO WINDOW ROCK...INCLUDING THE WHITE MOUNTAINS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Local storm report, Sep 19, 12:32 PM MST, 1 hour 58 minutes before
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</html>The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 11:38 AM MST | Severe Thunderstorm Warning | FGZ | Navajo | 37 min |
| Sep 19, 12:38 PM MST | Severe Thunderstorm Warning | FGZ | Gila, Navajo | 22 min |
| Sep 19, 2:24 PM MST | Areal Flood Advisory | FGZ | Gila | 81 min |
| Sep 19, 3:26 PM MST | Areal Flood Advisory | FGZ | Yavapai | 103 min |
Nearby
Flash Flood Warnings in Arizona, 2009Every flash flood 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.