Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 9, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 17, 2017, 4:41 AM MST for Santa Cruz 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
- Jul 17, 2017, 4:41 AM MST (11:41 UTC)
- Expired
- Jul 17, 2017, 7:45 AM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 52 km from the middle of the area, began a volume at 11:40 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, 5:30 AM MST | FLASH FLOOD | 2 Sw Nogales, AZ | EPHRIAM WASH OVERFLOWED ITS BANKS AT WESTERN AVE BRIDGE. NEARBY RAIN GAUGE RECORDED 2.17 INCHES OF RAIN IN ABOUT AN HOUR. |
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 00:00Z, 11.7 hours before the alert went out and 78 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
- 750 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2006 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
116 WGUS55 KTWC 171141 FFWTWC AZC023-171445- /O.NEW.KTWC.FF.W.0009.170717T1141Z-170717T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 441 AM MST MON JUL 17 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... Southern Santa Cruz County in southeastern Arizona... * Until 745 AM MST * At 439 AM MST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. An automated rain gauge in Nogales has received over 1.75 inches in the past hour. This will result in Flash Flooding including within the Nogales Wash. * Some locations that will experience flooding include... Nogales, Rio Rico Northeast, Rio Rico Southwest, Rio Rico Northwest, Rio Rico Southeast, Tumacacori-Carmen, Patagonia, Pena Blanca Lake, Rio Rico, Lochiel, Kino Springs, Patagonia Lake and Elgin. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. 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 3155 11113 3159 11053 3133 11051 3133 11107 $$ GL
2 follow-up statements
429 WGUS75 KTWC 171250 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 550 AM MST MON JUL 17 2017 AZC023-171445- /O.CON.KTWC.FF.W.0009.000000T0000Z-170717T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Cruz- 550 AM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 AM MST FOR SOUTHEASTERN SANTA CRUZ COUNTY... At 549 AM MST, Doppler radar and automated rain gauges indicated thunderstorms are gradually weakening over the warned area. However, 1 to 2 inches of rain has fallen in the city of Nogales. Flooding of the Nogales Wash continues. Normally dry washes and low water crossings may be inundated in the following locations... Nogales, Rio Rico Northeast, Rio Rico Southwest, Rio Rico Northwest, Rio Rico Southeast, Tumacacori-Carmen, Patagonia, Pena Blanca Lake, Rio Rico, Lochiel, Kino Springs, Patagonia Lake and Elgin. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 3155 11113 3159 11053 3133 11051 3133 11107 $$ GL
172 WGUS75 KTWC 171449 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 749 AM MST MON JUL 17 2017 AZC023-171458- /O.EXP.KTWC.FF.W.0009.000000T0000Z-170717T1445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Cruz- 749 AM MST MON JUL 17 2017 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SANTA CRUZ COUNTY HAS EXPIRED... The heavy rain has ended for now, and waters are starting to recede. The flash flood warning is cancelled, however an urban and small stream flood advisory remains in effect until 9:45 AM MST. Please continue to heed road closures. LAT...LON 3155 11113 3159 11053 3133 11051 3133 11107 $$ 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, 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, 3:00 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.