Alert archive / Arizona / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS Flagstaff, AZ

August 25, 20145 counties in Arizona

NWS Flagstaff, AZ issued this flash flood watch at Aug 25, 2014, 1:51 PM MST for 5 counties in Arizona. It took effect at Aug 26, 2014, 5:00 AM MST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Aug 25, 2014, 1:51 PM MST (20:51 UTC)
In effect from: Aug 26, 2014, 5:00 AM MST
Expired: Aug 26, 2014, 11:00 PM MST
In force: 18 hr
Issued by: NWS Flagstaff, AZ
Flood severity: None

Counties Apache County, AZ, Coconino County, AZ, Gila County, AZ, Navajo County, AZ, Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 52 km from the middle of the area, began a volume at 20:53 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, 8.9 hours before the alert went out and 316 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: 1222 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1244 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood watch went out at Aug 25, 10:00 AM MST, 3 hours 51 minutes earlier.

Area forecast discussion, Aug 25, 10:00 AM MST, 3 hours 51 minutes before

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Hazardous weather outlook, Aug 25, 6:37 AM MST, 7 hours 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 2:40 PM MST	Areal Flood Advisory	FGZ	Yavapai	110 min

Nearby

Flash Flood Watches in Arizona, 2014 Every flash flood watch in 2014

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.