Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 12, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 17, 2017, 3:00 PM MST for Pima County, Pinal 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
- Jul 17, 2017, 3:00 PM MST (22:00 UTC)
- Expired
- Jul 17, 2017, 5:00 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 80 km from the middle of the area, began a volume at 22:01 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 12:00Z, 10.0 hours before the alert went out and 55 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
- 384 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1180 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -68 m²/s²
- 0-3 km storm-relative helicity
- -51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
708 WGUS55 KTWC 172200 FFWTWC AZC019-021-180000- /O.NEW.KTWC.FF.W.0012.170717T2200Z-170718T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 300 PM MST MON JUL 17 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... Northeastern Pima County in southeastern Arizona... Southeastern Pinal County in southeastern Arizona... * Until 500 PM MST * At 257 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the northern portion of the Santa Catalina Mountains extending into San Manuel and Mammoth. Movement of the thunderstorms was to the northwest at 5 to 10 mph. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Mammoth, San Manuel, Oracle, Campo Bonito, Aravaipa Creek Preserve, Mount Lemmon/Summerhaven, and the Biosphere 2. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3245 11046 3242 11080 3283 11096 3290 11046 $$ Zell
2 follow-up statements
787 WGUS75 KTWC 172303 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 403 PM MST MON JUL 17 2017 AZC019-021-180000- /O.CON.KTWC.FF.W.0012.000000T0000Z-170718T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima-Pinal- 403 PM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR NORTHEASTERN PIMA AND SOUTHEASTERN PINAL COUNTIES... At 356 PM MST, Doppler radar indicated thunderstorms producing heavy rainfall between Oracle and Mammoth. Movement of the thunderstorms was to the north-northwest at 5 to 10 mph. Radar estimated rainfall from this area was between 1 and 2 inches of rain during the last hour. Expect the threat of flash flooding to continue in this area through 500 pm MST. Normally dry washes and low water crossings may be inundated in the following locations...Mammoth, San Manuel, Oracle, Campo Bonito, Aravaipa Creek Preserve, Mount Lemmon/Summerhaven and the Biosphere 2. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3245 11046 3242 11080 3283 11096 3290 11046 $$ Zell
625 WGUS75 KTWC 180000 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 500 PM MST MON JUL 17 2017 AZC019-021-180008- /O.EXP.KTWC.FF.W.0012.000000T0000Z-170718T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima-Pinal- 500 PM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN PIMA AND SOUTHEASTERN PINAL COUNTIES WILL EXPIRE AT 500 PM MST... The heavy rain has ended. Flash flooding is no longer expected to pose a threat. Expect heavy flow in normally dry streambeds and washes, as well as ponding of water in low spots and dips along roadways. Please continue to heed any remaining road closures. LAT...LON 3245 11046 3242 11080 3283 11096 3290 11046 $$ Zell
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 5:35 PM MST | Special Weather Statement | TWC | Pinal | 55 min |
| Jul 16, 6:00 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 60 min |
| Jul 16, 6:31 PM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Jul 16, 6:34 PM MST | Areal Flood Advisory | TWC | Pima | 56 min |
| Jul 16, 6:36 PM MST | Special Weather Statement | TWC | 39 min | |
| Jul 16, 6:39 PM MST | Special Weather Statement | TWC | 21 min | |
| Jul 16, 6:42 PM MST | Special Weather Statement | TWC | Pima | 48 min |
| Jul 16, 6:59 PM MST | Special Weather Statement | TWC | Pinal | 61 min |
| Jul 16, 7:25 PM MST | Special Weather Statement | TWC | 65 min | |
| Jul 16, 7:27 PM MST | Special Weather Statement | TWC | 33 min | |
| Jul 16, 8:12 PM MST | Special Weather Statement | TWC | Pima | 33 min |
| Jul 16, 8:56 PM MST | Flash Flood Warning | TWC | Graham | 3 hr |
| Jul 16, 9:04 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Jul 16, 9:23 PM MST | Special Weather Statement | TWC | Graham | 67 min |
| Jul 16, 10:34 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Jul 17, 12:35 AM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Jul 17, 4:41 AM MST | Flash Flood Warning | TWC | Santa Cruz | 3 hr |
| Jul 17, 7:47 AM MST | Areal Flood Advisory | TWC | Santa Cruz | 118 min |
| Jul 17, 1:01 PM MST | Special Weather Statement | TWC | 59 min | |
| Jul 17, 1:04 PM MST | Special Weather Statement | TWC | Santa Cruz | 41 min |
| Jul 17, 1:58 PM MST | Areal Flood Advisory | TWC | Cochise, Pima | 2 hr |
| Jul 17, 2:03 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| Jul 17, 2:07 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 113 min |
| Jul 17, 2:12 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 33 min |
| Jul 17, 2:16 PM MST | Areal Flood Advisory | TWC | Cochise | 119 min |
| Jul 17, 3:09 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 51 min |
| Jul 17, 3:17 PM MST | Flash Flood Warning | TWC | Pima | 118 min |
| Jul 17, 3:40 PM MST | Severe Thunderstorm Warning | TWC | Graham | 23 min |
| Jul 17, 4:00 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 5 hr |
| Jul 17, 4:01 PM MST | Flash Flood Warning | TWC | Pima | 119 min |
| Jul 17, 4:02 PM MST | Severe Thunderstorm Warning | TWC | Graham, Pinal | 28 min |
| Jul 17, 4:54 PM MST | Special Weather Statement | TWC | Pinal | 51 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.