Alert archive / Arizona / Excessive Heat Warnings in 2018
Excessive Heat Warning 7, NWS Tucson, AZ
NWS Tucson, AZ issued this excessive heat warning at Aug 7, 2018, 2:59 AM MST for 4 counties in Arizona. It took effect at Aug 7, 2018, 10:00 AM MST. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 7, 2018, 2:59 AM MST (09:59 UTC)
- In effect from
- Aug 7, 2018, 10:00 AM MST
- Expired
- Aug 7, 2018, 8:00 PM MST
- In force
- 10 hr
- Issued by
- NWS Tucson, AZ
Counties Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 100 km from the middle of the area, began a volume at 09:57 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, 10.0 hours before the alert went out and 75 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 4119 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Tucson, AZ wrote its last area forecast discussion before this excessive heat warning went out at Aug 6, 9:29 PM MST, 5 hours 30 minutes earlier.
Area forecast discussion, Aug 6, 9:29 PM MST, 5 hours 30 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 5:18 PM MST | Areal Flood Advisory | TWC | Greenlee | 87 min |
| Aug 6, 6:04 PM MST | Dust Storm Advisory | TWC | Cochise | 23 min |
| Aug 7, 3:49 PM MST | Special Weather Statement | TWC | Graham | 26 min |
| Aug 7, 4:27 PM MST | Special Weather Statement | TWC | 48 min | |
| Aug 7, 4:31 PM MST | Special Weather Statement | TWC | 29 min | |
| Aug 7, 4:48 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 42 min |
Nearby
Excessive Heat Warnings in Arizona, 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.