Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 49, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 1, 2017, 5:09 PM MST for Graham 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 1, 2017, 5:09 PM MST (00:09 UTC)
- Expired
- Aug 1, 2017, 7:15 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Graham County, AZ
The radar
The Tucson radar (KEMX), 119 km from the middle of the area, began a volume at 00:12 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
Tuscon, AZ (KDMA), launched 00:00Z, 0.2 hours before the alert went out and 117 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
- 144 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 2139 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
342
WGUS55 KTWC 020009
FFWTWC
AZC009-020215-
/O.NEW.KTWC.FF.W.0049.170802T0009Z-170802T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
509 PM MST TUE AUG 1 2017
The National Weather Service in Tucson has issued a
* Flash Flood Warning for...
South central Graham County in southeastern Arizona...
* Until 715 PM MST
* At 508 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over Mount Graham. These thunderstorms have shown
little movement. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Mount Graham, Frye Mesa Dam and Fort Grant.
Areas affected include the Frye Fire Burn Scar and locations below
it, namely Ash Creek, Frye Creek and Swift Trail Rd (Highway 366).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
This warning includes areas in or below a wildfire burn scar.
Rainfall on burned areas can cause increased flash flooding, debris
flows, mud slides, and rock slides. Take action now to protect
yourself from the effects of flash flooding and remember, Turn
Around, Don't Drown!
&&
LAT...LON 3280 10976 3259 10974 3258 10985 3267 11003
3287 10999 3287 10985
$$
Zell2 follow-up statements
147
WGUS75 KTWC 020110
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
610 PM MST TUE AUG 1 2017
AZC009-020215-
/O.CON.KTWC.FF.W.0049.000000T0000Z-170802T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Graham-
610 PM MST TUE AUG 1 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MST FOR
SOUTH CENTRAL GRAHAM COUNTY...
At 607 PM MST, Doppler radar continued to indicate thunderstorms
producing rain over Mount Graham. Flash flooding is either ongoing
or expected to begin shortly.
Excessive rainfall over the burn scar may result in debris flows on
Mount Graham. The debris flow can consist of rock, mud, vegetation
and other loose materials.
Normally dry washes and low water crossings may be inundated in the
following locations...
Mount Graham, Frye Mesa Dam and Fort Grant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
This warning includes areas in or below a wildfire burn scar.
Rainfall on burned areas can cause increased flash flooding, debris
flows, mud slides, and rock slides. Take action now to protect
yourself from the effects of flash flooding and remember, Turn
Around, Don't Drown!
&&
LAT...LON 3280 10976 3259 10974 3258 10985 3267 11003
3287 10999 3287 10985
$$
Zell835
WGUS75 KTWC 020217
FFSTWC
Flash Flood Statement
National Weather Service Tucson AZ
717 PM MST TUE AUG 1 2017
AZC009-020225-
/O.EXP.KTWC.FF.W.0049.000000T0000Z-170802T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Graham-
717 PM MST TUE AUG 1 2017
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL GRAHAM COUNTY HAS
EXPIRED...
The heavy rain has ended, with only light rainfall currently
occurring in the Mount Graham area. Flash flooding is no longer
expected to pose a threat. Please continue to heed any remaining
road closures.
LAT...LON 3280 10976 3259 10974 3258 10985 3267 11003
3287 10999 3287 10985
$$
ZellThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:12 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 1, 5:27 PM MST | Special Weather Statement | TWC | 63 min | |
| Aug 1, 5:46 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Aug 1, 5:47 PM MST | Areal Flood Advisory | TWC | Pinal | 118 min |
| Aug 1, 6:02 PM MST | Flash Flood Warning | TWC | Pinal | 88 min |
| Aug 1, 6:16 PM MST | Flash Flood Warning | TWC | Cochise | 119 min |
| Aug 1, 6:30 PM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Aug 1, 7:28 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 2, 11:20 AM MST | Special Weather Statement | TWC | 40 min | |
| Aug 2, 11:40 AM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 2, 11:51 AM MST | Areal Flood Advisory | TWC | Pima | 114 min |
| Aug 2, 12:08 PM MST | Special Weather Statement | TWC | Santa Cruz | 52 min |
| Aug 2, 12:12 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 2, 12:27 PM MST | Special Weather Statement | TWC | 48 min | |
| Aug 2, 12:39 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 2, 1:17 PM MST | Flash Flood Warning | TWC | Pima | 118 min |
| Aug 2, 1:29 PM MST | Special Weather Statement | TWC | Pinal | 46 min |
| Aug 2, 1:32 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 118 min |
| Aug 2, 1:51 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Aug 2, 1:58 PM MST | Severe Thunderstorm Warning | TWC | Pima | 32 min |
| Aug 2, 2:06 PM MST | Areal Flood Advisory | TWC | Cochise | 114 min |
| Aug 2, 2:29 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Aug 2, 3:01 PM MST | Special Weather Statement | TWC | 44 min | |
| Aug 2, 3:05 PM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Aug 2, 3:59 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 2, 4:03 PM MST | Special Weather Statement | TWC | Pima | 42 min |
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.