Alert archive / Arizona / Areal Flood Advisories in 2021
Areal Flood Advisory 18, NWS Tucson, AZ
NWS Tucson, AZ issued this areal flood advisory at Jul 4, 2021, 2:20 PM MST for Santa Cruz County, Arizona. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 4, 2021, 2:20 PM MST (21:20 UTC)
- Expired
- Jul 4, 2021, 5:30 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 21:21 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 (KTUS), launched 12:00Z, 9.3 hours before the alert went out and 72 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
- 550 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 910 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tucson, AZ wrote its last area forecast discussion before this areal flood advisory went out at Jul 4, 9:40 AM MST, 4 hours 40 minutes earlier.
Area forecast discussion, Jul 4, 9:40 AM MST, 4 hours 40 minutes before
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</html>The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 11:35 AM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 4, 11:41 AM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 4, 12:03 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 4, 12:33 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 4, 1:02 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 4, 1:17 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 4, 2:39 PM MST | Special Weather Statement | TWC | Santa Cruz | 51 min |
| Jul 4, 3:08 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 52 min |
| Jul 4, 3:44 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 4, 4:01 PM MST | Special Weather Statement | TWC | Santa Cruz | 44 min |
| Jul 4, 4:25 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 4, 4:36 PM MST | Special Weather Statement | TWC | Graham | 24 min |
Nearby
Areal Flood Advisories in Arizona, 2021Every areal flood advisory in 2021
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.