Alert archive / Arizona / Flash Flood Warnings in 2017

Flash Flood Warning 24, NWS Tucson, AZ

July 22, 2017Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 22, 2017, 5:21 PM MST for Pima County, Arizona. It was in force for 114 min. 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 22, 2017, 5:21 PM MST (00:21 UTC)
Expired: Jul 22, 2017, 7:15 PM MST
In force: 114 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Flood severity: None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 54 km from the middle of the area, began a volume at 00:23 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, 0.4 hours before the alert went out and 37 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

989 
WGUS55 KTWC 230021
FFWTWC
AZC019-230215-
/O.NEW.KTWC.FF.W.0024.170723T0021Z-170723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tucson AZ
521 PM MST SAT JUL 22 2017

The National Weather Service in Tucson has issued a

* Flash Flood Warning for...
  Northeastern Pima County in southeastern Arizona...

* Until 715 PM MST

* At 519 PM MST, Doppler radar indicated thunderstorms producing 
  heavy rain over the Burro burn scar area east of Mt. Lemmon in the 
  Catalinas. Flash flooding is expected to begin shortly.

* Flash flooding will remain over mainly remote areas of 
  the Catalina Mts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3245 11055 3226 11050 3229 11068 3246 11070

$$

Meyer

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 5:06 PM MST	Special Weather Statement	TWC		69 min
Jul 22, 5:30 PM MST	Severe Thunderstorm Warning	TWC	Pima	18 min
Jul 22, 5:46 PM MST	Areal Flood Advisory	TWC	Cochise, Graham, Pima, Pinal	3 hr
Jul 22, 6:13 PM MST	Special Weather Statement	TWC		62 min
Jul 22, 6:17 PM MST	Flash Flood Warning	TWC	Pima	88 min
Jul 22, 6:33 PM MST	Flash Flood Warning	TWC	Pima	117 min
Jul 22, 7:20 PM MST	Areal Flood Advisory	TWC	Pima, Santa Cruz	3 hr
Jul 22, 8:27 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 23, 10:43 AM MST	Flash Flood Watch	TWC	Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz	13 hr
Jul 23, 2:46 PM MST	Flash Flood Warning	TWC	Cochise, Pima, Santa Cruz	119 min
Jul 23, 2:51 PM MST	Areal Flood Advisory	TWC	Santa Cruz	114 min
Jul 23, 3:01 PM MST	Severe Thunderstorm Warning	TWC	Pima	29 min
Jul 23, 3:02 PM MST	Flash Flood Warning	TWC	Pima	118 min
Jul 23, 3:12 PM MST	Areal Flood Advisory	TWC	Cochise	2 hr
Jul 23, 3:35 PM MST	Special Weather Statement	TWC		40 min
Jul 23, 3:47 PM MST	Special Weather Statement	TWC	Graham	58 min
Jul 23, 3:55 PM MST	Flash Flood Warning	TWC	Pima	2 hr
Jul 23, 4:10 PM MST	Areal Flood Advisory	TWC	Cochise, Graham	2 hr
Jul 23, 4:18 PM MST	Severe Thunderstorm Warning	TWC	Graham	42 min
Jul 23, 4:23 PM MST	Flash Flood Warning	TWC	Pima	112 min
Jul 23, 4:24 PM MST	Flash Flood Warning	TWC	Pinal	2 hr
Jul 23, 4:27 PM MST	Severe Thunderstorm Warning	TWC	Pinal	34 min
Jul 23, 4:41 PM MST	Flash Flood Warning	TWC	Graham	2 hr
Jul 23, 4:46 PM MST	Areal Flood Advisory	TWC	Pima	119 min
Jul 23, 4:47 PM MST	Areal Flood Advisory	TWC	Cochise, Santa Cruz	118 min
Jul 23, 4:59 PM MST	Special Weather Statement	TWC	Pinal	46 min

Nearby

Flash Flood Warnings in Arizona, 2017 Every 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.