Alert archive / Arizona / Special Weather Statements in 2019
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 30, 2019, 4:49 PM MST for Greenlee County, Arizona. It was in force for 41 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 30, 2019, 4:49 PM MST (23:49 UTC)
- Expired
- Aug 30, 2019, 5:30 PM MST
- In force
- 41 min
- Issued by
- NWS Tucson, AZ
County Greenlee County, AZ
The radar
The Tucson radar (KEMX), 174 km from the middle of the area, began a volume at 23:49 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, 11.8 hours before the alert went out and 180 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
- 379 J/kg
- Mixed-layer CIN
- -266 J/kg
- Mixed-layer LCL
- 2093 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 84 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 30, 2:42 PM MST, 2 hours 7 minutes earlier.
Area forecast discussion, Aug 30, 2:42 PM MST, 2 hours 7 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 242 PM MST Fri Aug 30 2019 .SYNOPSIS...Expect a little more thunderstorms this evening compared to yesterday. Otherwise, a favorable weather pattern for daily afternoon and evening thunderstorms will remain in place through at least the middle of next week. The prospect of daily rain chances will also help moderate daytime temperatures, with readings closer to normal by next week. && .DISCUSSION...The upper high centered over southwest Arizona today will meander northeast to the Four Corners region this weekend. This will keep a favorable monsoonal flow in place. Embedded in this flow, models continued to show at least a couple of inverted troughs or disturbances affecting southern Arizona. This will likely favor another active period of thunderstorms over the weekend. This shower and thunderstorm activity should continue into next week as the flow pattern remains favorable. Models hint at another disturbance moving north from mexico, which could enhance thunderstorm coverage the middle of next week. However by late next week, models suggested that the flow pattern will become less favorable for daily thunderstorms as the upper high transitions to another location. && .AVIATION...Valid through 01/00Z. Expect isolated to scattered -TSRA/-SHRA this evening. Localized areas of TSRA/SHRA this evening and again Saturday, with the best chance for areas south and east of TUS, including KDUG/KOLS. Brief MVFR based on CIGS/VSBY from heavier TS will be possible this evening and again Saturday afternoon. VCSH/-TSRA may continue until around midnight tonight. Expect FEW/SCT clouds between 8k-12k ft AGL with BKN-OVC AOA 20k ft AGL. Expect WNW winds of 6-11kts with gusts to 18kts during the afternoon. Gustier winds possible around TS. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...A favorable flow regime combined with adequate moisture will result in the daily cycle of mainly afternoon and evening isolated to scattered showers and thunderstorms through the holiday weekend into next week. Expect gusty and erratic winds with the stronger thunderstorms. Otherwise, 20-foot winds will be terrain driven mainly under 15 mph. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
In the hours before
Special weather statement, Aug 30, 4:02 PM MST, 47 minutes before
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</html>Special weather statement, Aug 30, 4:47 PM MST, 2 minutes before
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</html>Special weather statement, Aug 30, 4:49 PM MST, 0 minutes before
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<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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</html>The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:14 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 2 hr |
| Aug 30, 3:25 PM MST | Areal Flood Advisory | TWC | Pima | 110 min |
| Aug 30, 3:51 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 39 min |
| Aug 30, 4:02 PM MST | Special Weather Statement | TWC | Santa Cruz | 43 min |
| Aug 30, 4:47 PM MST | Special Weather Statement | TWC | Cochise | 28 min |
Nearby
Special Weather Statements in Arizona, 2019Every special weather statement in 2019
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.