Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 10, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 17, 2017, 2:03 PM MST for Pima County, Arizona. It was in force for 117 min. 2 reports 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
- Jul 17, 2017, 2:03 PM MST (21:03 UTC)
- Expired
- Jul 17, 2017, 4:00 PM MST
- In force
- 117 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 49 km from the middle of the area, began a volume at 21:02 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 |
|---|---|---|---|
| Jul 17, 3:40 PM MST | FLASH FLOOD | 5 Wnw Tucson, AZ | DELAYED REPORT...FLOODING OF CAMINO DE OESTE WASH. SILVERBELL RD CLOSED BETWEEN SWEETWATER AND GORET |
| Jul 17, 3:45 PM MST | FLASH FLOOD | 6 Nw South Tucson, AZ | DELAYED REPORT...SWIFT WATER RESCUE WHERE CAMINO DE OESTE WASH CROSSES N LLOYD BUSH DR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 12:00Z, 9.1 hours before the alert went out and 10 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.
516 WGUS55 KTWC 172103 FFWTWC AZC019-172300- /O.NEW.KTWC.FF.W.0010.170717T2103Z-170717T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 203 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... * Until 400 PM MST * At 202 PM MST, Doppler radar indicated thunderstorms producing heavy rain over central and western Tucson. The storm was moving west at 5 to 10 mph. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Tucson, Flowing Wells, Drexel Heights, Tucson Estates, Valencia West, Summit, South Tucson, San Xavier Mission. This includes the following streams and drainages...Santa Cruz River...Rillito River...Chico Arroyo and West Branch Santa Cruz River. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 3229 11093 3211 11091 3199 11110 3232 11113 $$ Meyer
3 follow-up statements
988 WGUS75 KTWC 172143 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 243 PM MST MON JUL 17 2017 AZC019-172300- /O.CON.KTWC.FF.W.0010.000000T0000Z-170717T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 243 PM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR NORTHEASTERN PIMA COUNTY... At 238 PM MST, Doppler radar indicated heavy rain continuing across portions of west Tucson, with heaviest amounts now southwest of Flowing Wells, west of South Tucson, and north of Tucson Estates. Flash flooding is already occurring. One spotter reported 1.5 inches in less than an hour, with amounts in excess of 2 inches possible. Normally dry washes and low water crossings may be inundated in the following locations...western Tucson, Flowing Wells, Drexel Heights, Tucson Estates, Valencia West, Summit, South Tucson, San Xavier Mission. This includes the following streams and drainages...Santa Cruz River...Rillito River...Chico Arroyo and West Branch Santa Cruz River. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 3229 11093 3211 11091 3199 11110 3232 11113 $$ Meyer
714 WGUS75 KTWC 172236 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 336 PM MST MON JUL 17 2017 AZC019-172300- /O.CON.KTWC.FF.W.0010.000000T0000Z-170717T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 336 PM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR NORTHEASTERN PIMA COUNTY... At 335 PM MST, rainfall had greatly diminished across western Tucson. However, heavy runoff will continue from storms that delivered between 1 and 3 inches across the area. Flash flooding is already occurring. This includes the following streams and drainages...Santa Cruz River...Rillito River...Chico Arroyo and West Branch Santa Cruz River. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 3229 11093 3211 11091 3199 11110 3232 11113 $$ Meyer
606 WGUS75 KTWC 172305 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 405 PM MST MON JUL 17 2017 AZC019-172313- /O.EXP.KTWC.FF.W.0010.000000T0000Z-170717T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pima- 405 PM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN PIMA COUNTY HAS EXPIRED... The heavy rain has ended. Flash flooding is no longer expected to pose a threat, however expect heavy flow in normally dry streambeds and washes as well as some street flooding into the evening hours. An Urban and Small Stream Flood Advisory remains in effect until 9 PM. Please continue to heed any road closures. LAT...LON 3229 11093 3211 11091 3199 11110 3232 11113 $$ Meyer
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, 2:07 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, 3:00 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.