Alert archive / Arizona / Flash Flood Watches in 2015
Flash Flood Watch 5, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood watch at Sep 20, 2015, 1:15 PM MST for 5 counties in Arizona. It took effect at Sep 21, 2015, 5:00 PM MST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Sep 20, 2015, 1:15 PM MST (20:15 UTC)
- In effect from
- Sep 21, 2015, 5:00 PM MST
- Expired
- Sep 22, 2015, 3:01 AM MST
- In force
- 10 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 20:19 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, 8.3 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.
- Mixed-layer CAPE
- 15 J/kg
- Mixed-layer CIN
- -334 J/kg
- Mixed-layer LCL
- 1716 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -58 m²/s²
- 0-3 km storm-relative helicity
- -69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Flash Flood Watches in Arizona, 2015Every flash flood watch in 2015
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.