Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 5, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 13, 2017, 6:36 PM MST for Cochise County, Arizona. It was in force for 114 min. 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 13, 2017, 6:36 PM MST (01:36 UTC)
- Expired
- Jul 13, 2017, 8:30 PM MST
- In force
- 114 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 31 km from the middle of the area, began a volume at 01:38 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 13, 7:34 PM MST | FLASH FLOOD | St. David, AZ | DRAGOON/GILA WASH AT SYBIL RD IMPASSABLE DUE TO FLASH FLOODING. |
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, 1.6 hours before the alert went out and 64 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
- 757 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 2798 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
250 WGUS55 KTWC 140136 FFWTWC AZC003-140330- /O.NEW.KTWC.FF.W.0005.170714T0136Z-170714T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Tucson AZ 636 PM MST THU JUL 13 2017 The National Weather Service in Tucson has issued a * Flash Flood Warning for... West central Cochise County in southeastern Arizona... * Until 830 PM MST * At 634 PM MST, Doppler radar indicated thunderstorms producing very heavy rain across west central Cochise county near and south of I-10. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Benson, Kartchner Caverns State Park, Saint David and Mescal. This includes the following streams and drainages...Mescal Arroyo... Apache Canyon...San Pedro River...Dragoon Wash...Cadillac Wash... Middle Canyon Wash...Cienega Creek and Montosa Canyon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3196 11019 3175 11027 3179 11044 3200 11043 $$ Meyer
2 follow-up statements
874 WGUS75 KTWC 140233 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 733 PM MST THU JUL 13 2017 AZC003-140330- /O.CON.KTWC.FF.W.0005.000000T0000Z-170714T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cochise- 733 PM MST THU JUL 13 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM MST FOR WEST CENTRAL COCHISE COUNTY... At 731 PM MST, rainfall was diminishing rapidly across the Flash flood area in west central Cochise county, including the I-10 area and southward. Heavy flow from earlier rainfall amounts ranging from 1 to 3 inches will continue into the early evening hours with the flash flood threat continuing. Normally dry washes and low water crossings may be inundated in the following locations...Benson, Kartchner Caverns State Park, Saint David. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of washes and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3196 11019 3175 11027 3179 11044 3200 11043 $$ Meyer
539 WGUS75 KTWC 140330 FFSTWC Flash Flood Statement National Weather Service Tucson AZ 830 PM MST THU JUL 13 2017 AZC003-140339- /O.EXP.KTWC.FF.W.0005.000000T0000Z-170714T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cochise- 830 PM MST THU JUL 13 2017 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL COCHISE COUNTY WILL EXPIRE AT 830 PM MST... The heavy rain has ended. Flooding is no longer expected to pose a threat. Heavy flow in normally dry stream beds and washes will continue overnight; please continue to heed any remaining road closures. LAT...LON 3196 11019 3175 11027 3179 11044 3200 11043 $$ Meyer
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 5:05 PM MST | Special Weather Statement | TWC | Cochise | 55 min |
| Jul 13, 5:13 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 47 min |
| Jul 13, 5:25 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 50 min |
| Jul 13, 5:41 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 13, 5:43 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 62 min |
| Jul 13, 6:00 PM MST | Blowing Dust Advisory | TWC | Pima, Pinal | 2 hr |
| Jul 13, 6:00 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 45 min |
| Jul 13, 6:05 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 13, 6:13 PM MST | Special Weather Statement | TWC | Graham | 47 min |
| Jul 13, 6:43 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 62 min |
| Jul 13, 6:47 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Santa Cruz | 33 min |
| Jul 13, 7:07 PM MST | Special Weather Statement | TWC | 38 min | |
| Jul 13, 7:10 PM MST | Severe Thunderstorm Warning | TWC | Pima | 80 min |
| Jul 13, 7:40 PM MST | Special Weather Statement | TWC | Santa Cruz | 65 min |
| Jul 13, 7:43 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| Jul 13, 7:56 PM MST | Special Weather Statement | TWC | 49 min | |
| Jul 13, 8:08 PM MST | Severe Thunderstorm Warning | TWC | Pima | 37 min |
| Jul 13, 8:32 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 43 min |
| Jul 13, 9:12 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 48 min |
| Jul 14, 3:55 PM MST | Special Weather Statement | TWC | Graham | 35 min |
| Jul 14, 4:38 PM MST | Special Weather Statement | TWC | 37 min | |
| Jul 14, 4:55 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 35 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.