Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jul 12, 2012, 3:47 PM MST for Coconino County, Arizona. It was in force for 118 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
- Jul 12, 2012, 3:47 PM MST (22:47 UTC)
- Expired
- Jul 12, 2012, 5:45 PM MST
- In force
- 118 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Coconino County, AZ
The radar
The Cedar City radar (KICX), 163 km from the middle of the area, began a volume at 22:49 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, 10.8 hours before the alert went out and 170 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
- 2 J/kg
- Mixed-layer CIN
- -274 J/kg
- Mixed-layer LCL
- 2079 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
143
WGUS55 KFGZ 122247
FFWFGZ
AZC005-130045-
/O.NEW.KFGZ.FF.W.0001.120712T2247Z-120713T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
347 PM MST THU JUL 12 2012
THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL COCONINO COUNTY IN NORTH CENTRAL ARIZONA...
THIS INCLUDES THE ANTELOPE CANYON NEAR SR 98.
* UNTIL 545 PM MST
* AT 336 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LE CHEE AND
BIG FIVE...AND ANTELOPE CANYON.
* THUNDERSTORMS ARE OVER AND EAST OF THE ANTELOP CANYON DRAINGAGE...AND
MOVING TO THE WEST AT 10 MPH. RADAR IS ESTIMATING RAINFALL OF NEARLY
ONE INCH PER HOUR FROM THESE STORMS.
DO NOT ENTER ANTELOPE CANYON THIS AFTERNOON.
LAT...LON 3673 11146 3694 11146 3694 11131 3651 11121
3649 11134
$$
413 follow-up statements
221
WGUS75 KFGZ 122353
FFSFGZ
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
453 PM MST THU JUL 12 2012
AZC005-130045-
/O.CON.KFGZ.FF.W.0001.000000T0000Z-120713T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
453 PM MST THU JUL 12 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR NORTH
CENTRAL COCONINO COUNTY...
AT 441 PM MST...THE THREAT FOR FLASH FLOODING REMAINS OVER THE
WARNED AREA OF ANTELOPE CANYON NEAR STATE ROUTE 98. WHILE HEAVY RAIN
HAS ENDED OVER THE ANTELOPE CANYON DRAINAGE BASIN...FLOODING FROM
EARLIER HEAVY RAINS IS STILL EXPECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOT CANYONS ARE PARTICULARLY PRONE TO FLASH FLOODING. AVOID HIKING
IN SLOT CANYONS WHEN THUNDERSTORMS ARE NEARBY.
&&
LAT...LON 3673 11146 3694 11146 3694 11131 3651 11121
3649 11134
$$118
WGUS75 KFGZ 122359 CCA
FFSFGZ
FLASH FLOOD STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
453 PM MST THU JUL 12 2012
AZC005-130045-
/O.COR.KFGZ.FF.W.0001.000000T0000Z-120713T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
453 PM MST THU JUL 12 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR NORTH
CENTRAL COCONINO COUNTY...
AT 441 PM MST...THE THREAT FOR FLASH FLOODING REMAINS FOR THE WARNED
AREA OF ANTELOPE CANYON NEAR THE CITY OF PAGE AND STATE ROUTE 98.
WHILE HEAVY RAIN HAS ENDED OVER THE ANTELOPE CANYON DRAINAGE
BASIN...FLOODING FROM EARLIER HEAVY RAINS IS STILL EXPECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOT CANYONS ARE PARTICULARLY PRONE TO FLASH FLOODING. AVOID HIKING
IN SLOT CANYONS WHEN THUNDERSTORMS ARE NEARBY.
&&
LAT...LON 3673 11146 3694 11146 3694 11131 3651 11121
3649 11134
$$425
WGUS75 KFGZ 130048
FFSFGZ
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
548 PM MST THU JUL 12 2012
AZC005-130057-
/O.EXP.KFGZ.FF.W.0001.000000T0000Z-120713T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO AZ-
548 PM MST THU JUL 12 2012
...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTH CENTRAL COCONINO
COUNTY...
HEAVY RAIN HAS ENDED ACROSS THE WARNING AREA NEAR PAGE. THUS...THE
FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.
&&
LAT...LON 3673 11146 3694 11146 3694 11131 3651 11121
3649 11134
$$The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 12:07 PM MST | Special Weather Statement | FGZ | 23 min | |
| Jul 12, 12:32 PM MST | Special Weather Statement | FGZ | 28 min | |
| Jul 12, 1:26 PM MST | Special Weather Statement | FGZ | Yavapai | 49 min |
| Jul 12, 2:05 PM MST | Special Weather Statement | FGZ | Yavapai | 25 min |
| Jul 12, 2:38 PM MST | Special Weather Statement | FGZ | Yavapai | 22 min |
| Jul 12, 2:46 PM MST | Areal Flood Advisory | FGZ | Yavapai | 119 min |
Nearby
Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012
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.