Alert archive / Arizona / Flash Flood Warnings in 2015
Flash Flood Warning 21, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Aug 9, 2015, 3:29 PM MST for Coconino County, Arizona. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 9, 2015, 3:29 PM MST (22:29 UTC)
- Expired
- Aug 9, 2015, 6:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Coconino County, AZ
The radar
The Cedar City radar (KICX), 161 km from the middle of the area, began a volume at 22:30 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 9, 5:00 PM MST | FLASH FLOOD | Le Chee, AZ | MAINTENANCE WORKER AT LAKE POWELL TRIBAL PARK REPORTED SIGNIFICANT FLOODING OF ANTELOPE CANYON. TIME ESTIMATED OFF RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.5 hours before the alert went out and 177 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
- 297 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1242 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
679
WGUS55 KFGZ 092229
FFWFGZ
AZC005-100130-
/O.NEW.KFGZ.FF.W.0021.150809T2229Z-150810T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
329 PM MST SUN AUG 9 2015
THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN COCONINO COUNTY IN NORTH CENTRAL ARIZONA...
* UNTIL 630 PM MST
* AT 326 PM MST...DOPPLER RADAR INDICATED THAT THUNDERSTORMS HAD
PRODUCED HEAVY RAIN FROM BETWEEN BITTER SPRINGS AND LEES FERRY
TOWARD ANTELOPE CANYON OVER THE PAST HOUR. HEAVY RAIN IS CURRENLY
MOVING INTO THE ANTELOPE CANYON DRAINAGE. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
PAGE...LE CHEE...ANTELOPE CREEK BASIN...ANTELOPE CANYON NEAR SR
98...BIG FIVE...WATERHOLES CANYON AND ANTELOPE CANYON.
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...PEACH WASH...SAND
WASH...COLORADO RIVER...ANTELOPE CREEK AND KAIBITO CREEK.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
STATE ROUTE 98 BETWEEN MILE MARKERS 548 AND 549.
U.S. HIGHWAY 89 BETWEEN MILE MARKERS 536 AND 548.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 3690 11128 3651 11117 3648 11136 3676 11157
3695 11146 3696 11139
$$1 follow-up statement
378
WGUS75 KFGZ 100128
FFSFGZ
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
628 PM MST SUN AUG 9 2015
AZC005-100136-
/O.EXP.KFGZ.FF.W.0021.000000T0000Z-150810T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCONINO-
628 PM MST SUN AUG 9 2015
...THE FLASH FLOOD WARNING FOR NORTHEASTERN COCONINO COUNTY WILL
EXPIRE AT 630 PM MST...
HEAVY RAINFALL SOUTH OF PAGE ENDED SEVERAL HOURS AGO AND ANY FLOOD
WATERS THAT MOVED THROUGH ANTELOPE AND WATERHOLES CANYONS IS LIKELY
RECEDING. NO REPORTS OF FLOODING HAVE BEEN RECEIVED FROM THE REGION.
NORMALLY DRY WASHES AND CREEKS SOUTH PAGE MAY STILL HAVE SOME WATER
IN THEM THIS EVENING...TAKE APPROPRIATE PRECAUTIONS.
LAT...LON 3690 11128 3651 11117 3648 11136 3676 11157
3695 11146 3696 11139
$$The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 6:35 PM MST | Special Weather Statement | FGZ | Navajo | 40 min |
| Aug 8, 7:18 PM MST | Special Weather Statement | FGZ | Navajo | 42 min |
| Aug 9, 11:26 AM MST | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Aug 9, 12:26 PM MST | Special Weather Statement | FGZ | Yavapai | 34 min |
| Aug 9, 12:58 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Navajo | 47 min |
| Aug 9, 2:05 PM MST | Special Weather Statement | FGZ | Coconino | 25 min |
| Aug 9, 2:10 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 50 min |
| Aug 9, 2:22 PM MST | Tornado Warning | FGZ | Coconino | 23 min |
| Aug 9, 2:39 PM MST | Special Weather Statement | FGZ | 36 min | |
| Aug 9, 2:42 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 33 min |
| Aug 9, 3:00 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 21 min |
Nearby
Flash Flood Warnings in Arizona, 2015Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.