Alert archive / Arizona / Special Weather Statements in 2018
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 2, 2018, 11:40 AM MST for Santa Cruz County, Arizona. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2018, 11:40 AM MST (18:40 UTC)
- Expired
- Aug 2, 2018, 12:15 PM MST
- In force
- 35 min
- Issued by
- NWS Tucson, AZ
County Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 25 km from the middle of the area, began a volume at 18:41 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, 6.7 hours before the alert went out and 52 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
- 234 J/kg
- Mixed-layer CIN
- -280 J/kg
- Mixed-layer LCL
- 2343 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 2, 10:11 AM MST, 1 hour 29 minutes earlier.
Area forecast discussion, Aug 2, 10:11 AM MST, 1 hour 29 minutes before
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<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.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>In the hours before
Special weather statement, Aug 2, 11:40 AM MST, 0 minutes before
Special Weather Statement National Weather Service Tucson AZ 1140 AM MST THU AUG 2 2018 AZZ503-504-507-513-021915- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon-Upper Santa Cruz River and Altar Valleys including Nogales-Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 1140 AM MST THU AUG 2 2018 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL PIMA AND NORTH CENTRAL SANTA CRUZ COUNTIES UNTIL 1215 PM MST... At 1138 AM MST, Doppler radar was tracking a strong thunderstorm 14 miles southeast of Green Valley over the Santa Rita Mountains. This storm was nearly stationary. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Madera Canyon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3161 11079 3171 11094 3185 11075 3178 11066 TIME...MOT...LOC 1838Z 221DEG 3KT 3173 11080 KD
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:00 PM MST | Special Weather Statement | TWC | Graham | 30 min |
| Aug 1, 5:41 PM MST | Special Weather Statement | TWC | Santa Cruz | 34 min |
| Aug 1, 5:59 PM MST | Special Weather Statement | TWC | 46 min | |
| Aug 1, 6:30 PM MST | Special Weather Statement | TWC | Santa Cruz | 30 min |
| Aug 1, 7:19 PM MST | Special Weather Statement | TWC | 41 min | |
| Aug 1, 7:27 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Aug 1, 7:59 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 46 min |
| Aug 1, 8:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Aug 1, 8:25 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 110 min |
| Aug 1, 8:44 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 2 hr |
| Aug 1, 9:17 PM MST | Flash Flood Warning | TWC | Pima | 118 min |
| Aug 1, 9:21 PM MST | Special Weather Statement | TWC | Pima | 54 min |
| Aug 2, 12:20 PM MST | Special Weather Statement | TWC | Santa Cruz | 25 min |
| Aug 2, 2:48 PM MST | Special Weather Statement | TWC | Pima | 42 min |
| Aug 2, 3:04 PM MST | Special Weather Statement | TWC | Pima | 41 min |
| Aug 2, 3:08 PM MST | Special Weather Statement | TWC | Pima | 52 min |
| Aug 2, 4:05 PM MST | Special Weather Statement | TWC | Pima | 40 min |
| Aug 2, 4:12 PM MST | Severe Thunderstorm Warning | TWC | Pima | 48 min |
| Aug 2, 4:38 PM MST | Severe Thunderstorm Warning | TWC | Pima | 37 min |
Nearby
Special Weather Statements in Arizona, 2018Every special weather statement 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.