Alert archive / Arizona / Special Weather Statements in 2018
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 10, 2018, 12:11 AM MST for Pinal County, Arizona. It was in force for 49 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 10, 2018, 12:11 AM MST (07:11 UTC)
- Expired
- Aug 10, 2018, 1:00 AM MST
- In force
- 49 min
- Issued by
- NWS Tucson, AZ
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 71 km from the middle of the area, began a volume at 07:13 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, 7.2 hours before the alert went out and 86 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
- 1059 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 2045 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
<!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>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 9, 10:17 PM MST, 1 hour 54 minutes earlier.
Area forecast discussion, Aug 9, 10:17 PM MST, 1 hour 54 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>In the hours before
Special weather statement, Aug 9, 9:19 PM MST, 2 hours 52 minutes before
Special Weather Statement
National Weather Service Tucson AZ
919 PM MST THU AUG 9 2018
AZZ502-504>506-100515-
Tohono O'odham Nation including Sells-Southeast Pinal County
including Kearny/Mammoth/Oracle-Tucson Metro Area including
Tucson/Green Valley/Marana/Vail-South Central Pinal County including
Eloy/Picacho Peak State Park-
919 PM MST THU AUG 9 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL PIMA AND
SOUTHWESTERN PINAL COUNTIES UNTIL 1015 PM MST...
At 917 PM MST, Doppler radar was tracking a strong thunderstorm near
Jackrabbit, about 20 miles southwest of Casa Grande, moving west at
15 mph. In addition, thunderstorms with gusty outflow were pushing
across I-10 northwest of Tucson and toward the storm near
Jackrabbit. Additional storm development is expected across
southwest and southcentral Pinal county, as well as north Central
Pima county and northern portions of the Tohono O'Odham Nation.
Winds in excess of 45 mph will be possible with these storms, along
with blowing dust followed by heavy rain.
Locations impacted include...
Marana, Eloy, Avra Valley, Santa Rosa, Casas Adobes, Tortolita,
Friendly Corners, North Komelik, White Horse Pass, Ventana, Chuichu,
Ak Chin, Red Rock, Anegam, Picacho, Picture Rocks, Picacho Peak,
Silver Bell, Jackrabbit and Kohatk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Some of these storms may intensify, so be certain to monitor local
radio stations and available television stations for additional
information and possible warnings from the National Weather Service.
&&
LAT...LON 3251 11235 3251 11221 3268 11220 3268 11216
3272 11215 3272 11205 3277 11205 3277 11188
3279 11187 3279 11178 3273 11174 3273 11167
3282 11155 3283 11135 3233 11103 3226 11240
TIME...MOT...LOC 0417Z 089DEG 12KT 3263 11195
MeyerSpecial weather statement, Aug 9, 11:06 PM MST, 1 hour 5 minutes before
Special Weather Statement National Weather Service Tucson AZ 1106 PM MST THU AUG 9 2018 AZZ502-515-100700- Tohono O'odham Nation including Sells-Baboquivari Mountains including Kitt Peak- 1106 PM MST THU AUG 9 2018 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PIMA COUNTY UNTIL MIDNIGHT MST... At 1105 PM MST, Doppler radar was tracking strong thunderstorms in central portions of the Tohono O'Odham Nation along a line extending from 8 miles southeast of Santa Rosa to 9 miles northwest of Kitt Peak. Movement was southwest at 10 to 15 mph. Winds in excess of 40 mph and blowing dust will be possible with these storms, with the dust followed by heavy rain. Locations impacted include... Sells, San Luis, Santa Rosa Ranch, Ak Chin, Mountain Village, Topawa, Covered Wells, Artesa, Comobabi, Nolic, San Isidro and Sil Naggia. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with these storms, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3218 11235 3175 11180 3205 11158 3233 11193 TIME...MOT...LOC 0605Z 048DEG 11KT 3224 11192 3207 11170 Meyer
Special weather statement, Aug 9, 11:49 PM MST, 22 minutes before
Special Weather Statement National Weather Service Tucson AZ 1149 PM MST THU AUG 9 2018 AZZ501-502-100730- Tohono O'odham Nation including Sells-Western Pima County Including Ajo/Organ Pipe Cactus National Monument- 1149 PM MST THU AUG 9 2018 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PIMA COUNTY UNTIL 1230 AM MST... At 1148 PM MST, Doppler radar was tracking a strong thunderstorm 13 miles west of Sells, moving southwest at 35 mph. Winds in excess of 40 mph and blowing dust will be possible with these storms, with the dust followed by heavy rain. Locations impacted include... Sells, Santa Cruz, Ali Chuk, Big Fields, Cowlic, Kupk and Papago Farms. LAT...LON 3184 11268 3212 11206 3195 11186 3165 11208 TIME...MOT...LOC 0648Z 044DEG 28KT 3190 11211
Special weather statement, Aug 10, 12:11 AM MST, 0 minutes before
Special Weather Statement
National Weather Service Tucson AZ
1211 AM MST FRI AUG 10 2018
AZZ502-504>506-100800-
Tohono O'odham Nation including Sells-Southeast Pinal County
including Kearny/Mammoth/Oracle-Tucson Metro Area including
Tucson/Green Valley/Marana/Vail-South Central Pinal County including
Eloy/Picacho Peak State Park-
1211 AM MST FRI AUG 10 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL PIMA AND
SOUTHWESTERN PINAL COUNTIES UNTIL 100 AM MST...
At 1209 AM MST, Doppler radar was tracking a line of strong
thunderstorm approaching Eloy to Picacho Peak, or 13 miles south of
Coolidge, moving southwest at 40 mph.
Wind gusts around 50 mph have been reported with these storms and
blowing dust will be possible and potentially affect Interstate 10.
Locations impacted include...
Eloy, Santa Rosa, Friendly Corners, North Komelik, White Horse Pass,
Chuichu, Red Rock, Anegam, Picacho, Picacho Peak, Jackrabbit, Kohatk
and Cocklebur.
LAT...LON 3263 11095 3224 11190 3245 11222 3251 11226
3251 11221 3268 11220 3268 11216 3272 11215
3272 11205 3277 11205 3277 11188 3279 11187
3279 11178 3273 11174 3273 11167 3276 11161
3289 11146
TIME...MOT...LOC 0709Z 052DEG 42KT 3279 11148
CernigliaThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 9:19 PM MST | Special Weather Statement | TWC | Pima | 56 min |
| Aug 9, 10:04 PM MST | Dust Storm Advisory | TWC | Pima, Pinal | 56 min |
| Aug 9, 11:06 PM MST | Special Weather Statement | TWC | Pima | 54 min |
| Aug 9, 11:27 PM MST | Dust Storm Advisory | TWC | Pinal | 93 min |
| Aug 9, 11:49 PM MST | Special Weather Statement | TWC | Pima | 41 min |
| Aug 10, 12:48 AM MST | Dust Storm Advisory | TWC | Pima | 87 min |
| Aug 10, 2:49 PM MST | Special Weather Statement | TWC | 56 min | |
| Aug 10, 3:31 PM MST | Special Weather Statement | TWC | 44 min | |
| Aug 10, 3:38 PM MST | Severe Thunderstorm Warning | TWC | Pima | 52 min |
| Aug 10, 3:55 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Aug 10, 4:04 PM MST | Flash Flood Warning | TWC | Pima | 116 min |
| Aug 10, 4:12 PM MST | Severe Thunderstorm Warning | TWC | Pima | 42 min |
| Aug 10, 4:38 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Aug 10, 4:41 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
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.