Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 97, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 24, 2017, 9:51 AM MST for Mohave County, Arizona. It was in force for 2 hr. 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 24, 2017, 9:51 AM MST (16:51 UTC)
- Expired
- Aug 24, 2017, 12:15 PM MST
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 45 km from the middle of the area, began a volume at 16:52 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
Las Vegas, NV (KVEF), launched 12:00Z, 4.9 hours before the alert went out and 99 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
- 119 J/kg
- Mixed-layer CIN
- -213 J/kg
- Mixed-layer LCL
- 2787 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
090
WGUS55 KVEF 241651
FFWVEF
AZC015-241915-
/O.NEW.KVEF.FF.W.0097.170824T1651Z-170824T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
951 AM MST THU AUG 24 2017
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Northwestern Mohave County in northwestern Arizona...
* Until 1215 PM MST
* At 948 AM MST, Doppler radar indicated thunderstorms producing
heavy rain just east of Hoover Dam and over Temple Bar Road. Flash
flooding has already been reported in the area, and additional
rain will only worsen the situation.
* Some locations that will experience flooding include...
Temple Bar Campground and Willow Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3563 11427 3563 11462 3585 11470 3587 11466
3591 11471 3599 11474 3602 11472 3608 11475
3611 11474 3615 11459 3614 11450 3613 11451
3614 11446 3612 11445 3614 11442 3614 11437
3610 11433
$$
Morgan2 follow-up statements
077
WGUS75 KVEF 241749
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1049 AM MST THU AUG 24 2017
AZC015-241915-
/O.CON.KVEF.FF.W.0097.000000T0000Z-170824T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
1049 AM MST THU AUG 24 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 PM MST FOR
NORTHWESTERN MOHAVE COUNTY...
At 1047 AM MST, Doppler radar indicated that rain was tapering off
over northwest Mohave County. However, very heavy rain fell earlier,
especially in the area of Temple Bar Road, and flooding had already
been reported. Runoff is likely still flowing, so the warning will
remain in effect.
Some locations that will experience flooding include...
Temple Bar Campground and Lake Mead National Recreation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3563 11427 3563 11462 3585 11470 3587 11466
3591 11471 3599 11474 3602 11472 3608 11475
3611 11474 3615 11459 3614 11450 3613 11451
3614 11446 3612 11445 3614 11442 3614 11437
3610 11433
$$
Morgan674
WGUS75 KVEF 241907
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1207 PM MST THU AUG 24 2017
AZC015-241916-
/O.EXP.KVEF.FF.W.0097.000000T0000Z-170824T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
1207 PM MST THU AUG 24 2017
...THE FLASH FLOOD WARNING FOR NORTHWESTERN MOHAVE COUNTY WILL EXPIRE
AT 1215 PM MST...
Heavy rain had ended over northwest Mohave County, and flooding is
no longer expected to pose a threat. Please continue to heed any
remaining road closures.
LAT...LON 3563 11427 3563 11462 3585 11470 3587 11466
3591 11471 3599 11474 3602 11472 3608 11475
3611 11474 3615 11459 3614 11450 3613 11451
3614 11446 3612 11445 3614 11442 3614 11437
3610 11433
$$
MorganThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 5:24 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 24, 6:33 AM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 24, 6:58 AM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
Nearby
Flash Flood Warnings in Arizona, 2017Every flash flood warning in 2017
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.