Alert archive / Arizona / Excessive Heat Warnings in 2018
Excessive Heat Warning 8, NWS Phoenix, AZ
NWS Phoenix, AZ issued this excessive heat warning at Jul 20, 2018, 3:13 AM MST for 5 counties in Arizona; Imperial County, Riverside County, San Bernardino County, California. It took effect at Jul 23, 2018, 10:00 AM MST. It was in force for 4 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 20, 2018, 3:13 AM MST (10:13 UTC)
- In effect from
- Jul 23, 2018, 10:00 AM MST
- Expired
- Jul 27, 2018, 8:00 PM MST
- In force
- 4 days
- Issued by
- NWS Phoenix, AZ
Counties Gila County, AZ, La Paz County, AZ, Maricopa County, AZ, Pinal County, AZ, Yuma County, AZ, Imperial County, CA, Riverside County, CA, San Bernardino County, CA
The radar
The Yuma radar (KYUX), 142 km from the middle of the area, began a volume at 10:17 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
Phoenix, AZ (KPSR), launched 00:00Z, 10.2 hours before the alert went out and 166 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
- 1392 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 2317 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this excessive heat warning went out at Jul 20, 2:55 AM MST, 18 minutes earlier.
Area forecast discussion, Jul 20, 2:55 AM MST, 18 minutes before
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</html>The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 5:51 PM MST | Special Weather Statement | PSR | Gila | 54 min |
| Jul 19, 6:45 PM MST | Areal Flood Advisory | PSR | Gila | 117 min |
| Jul 19, 7:08 PM MST | Areal Flood Advisory | PSR | Gila | 2 hr |
| Jul 19, 7:19 PM MST | Special Weather Statement | PSR | Gila | 41 min |
| Jul 19, 7:57 PM MST | Special Weather Statement | PSR | Gila | 63 min |
| Jul 19, 8:11 PM MST | Severe Thunderstorm Warning | PSR | Gila, Maricopa | 34 min |
| Jul 19, 10:56 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 20, 3:13 AM MST | Heat Advisory | PSR | Gila, Maricopa, Pinal | 6 days |
| Jul 20, 12:40 PM MST | Special Weather Statement | PSR | Gila | 50 min |
| Jul 20, 4:17 PM MST | Special Weather Statement | PSR | 43 min |
Nearby
Excessive Heat Warnings in Arizona, 2018Excessive Heat Warnings in California, 2018Every excessive heat warning in 2018
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.