Alert archive / Arizona / Dust Storm Warnings in 2019
Dust Storm Warning 2, NWS Tucson, AZ
NWS Tucson, AZ issued this dust storm warning at Jul 24, 2019, 6:02 PM MST for Pima County, Pinal County, Arizona. It was in force for 67 min. 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 24, 2019, 6:02 PM MST (01:02 UTC)
- Expired
- Jul 24, 2019, 7:09 PM MST
- In force
- 67 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Pima County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 01:03 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 00:00Z, 1.0 hours before the alert went out and 73 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
- 732 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 2599 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
What forecasters said that day
The local office's own words before this dust storm 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 dust storm warning went out at Jul 24, 2:30 PM MST, 3 hours 32 minutes earlier.
Area forecast discussion, Jul 24, 2:30 PM MST, 3 hours 32 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 230 PM MST Wed Jul 24 2019 .SYNOPSIS...Isolated to scattered thunderstorms can be expected this evening followed by clearing tonight. A subtle shift in the weather pattern will result in limited thunderstorm activity the next few days. However, an upswing in thunderstorms will return early next week. High temperatures will also be trending upward through the weekend. && .DISCUSSION...A batch of scattered showers and thunderstorms continued to spread across parts of southeast California northward into southern Nevada and northwest Arizona. This activity was associated with an inverted upper level trough passing through the state today. On the backside or eastern fringes of this trough, showers and thunderstorms were struggling to develop across southeast Arizona. The main activity so for this afternoon was confined to Santa Cruz county where some locally heavy rainfall has been observed. After today, models showed the upper high over the Four Corners region shifting south over east-central Arizona by Thursday and becoming centered over central AZ by the weekend. Overall, this shift in the upper high's position over the state will result in hotter daytime highs and somewhat limited thunderstorm coverage the next few days. Medium range models showed the upper high building northward and becoming centered over the Four Corners region again early next week. This would result in an upswing in thunderstorm activity around Monday and Tuesday of next week. && .AVIATION...Valid through 26/00Z. Isolated to scattered -SHRA/-TSRA in the afternoon and evening mainly to the south of KTUS but also to its east. Thunderstorms will slowly dissipate after 25/06Z. KOLS will mainly be affected. Clouds SCT 10k-14k ft MSL and SCT-BKN 20k ft MSL. MVFR cigs possible in -SHRA/-TSRA. Sfc winds generally out of the E/SE at 8-12 kts with the exception of KTUS which will see southwest winds early this evening. Winds will become light and variable tonight. In the vicinity of thunderstorms, winds will be much stronger with gusts approaching 40 kts possible. Chances of thunderstorms and showers are much lower Thursday afternoon. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Isolated to Scattered thunderstorms and showers will continue into the evening mainly to the south of Tucson and over the White Mountains. Isolated thunderstorms are also found to the west and east of Tucson. Slight downtick in activity Thursday with just isolated shower/ thunderstorm coverage expected. Friday into the weekend expect isolated to scattered thunderstorms from central Pima County eastward. Near thunderstorms winds will be gusty and erratic. Otherwise, 20-foot winds today will generally be from the east to southeast mainly under 15 mph. 20-foot winds Thursday into Sunday will be primarily terrain driven at less than 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, Jul 24, 4:30 PM MST, 1 hour 32 minutes before
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</html>Special weather statement, Jul 24, 4:34 PM MST, 1 hour 28 minutes before
Special Weather Statement National Weather Service Tucson AZ 434 PM MST Wed Jul 24 2019 AZZ504-514-250015- Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven-Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 434 PM MST Wed Jul 24 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PIMA COUNTY UNTIL 515 PM MST... At 433 PM MST, Doppler radar was tracking a strong thunderstorm over Tucson International Airport, moving north at 10 mph. Half inch hail, wind gusts of 50 mph and blowing dust will be possible with this storm. Locations impacted include... Tucson, Marana, Davis-Monthan Air Force Base, Casas Adobes, Drexel Heights, Flowing Wells, South Tucson, Pascua Pueblo Yaqui Reservation, Tucson Estates, Saguaro National Park West, Catalina Foothills, Tucson International Airport, Valencia West, Summit and San Xavier Mission. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3212 11082 3206 11103 3228 11121 3238 11088 TIME...MOT...LOC 2333Z 160DEG 8KT 3216 11096 Carpenter
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 5:34 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 86 min |
| Jul 24, 5:52 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 38 min |
| Jul 24, 6:58 PM MST | Special Weather Statement | TWC | 47 min | |
| Jul 24, 7:02 PM MST | Severe Thunderstorm Warning | TWC | Pima, Pinal | 43 min |
| Jul 25, 3:30 PM MST | Special Weather Statement | TWC | Cochise | 45 min |
| Jul 25, 3:34 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima | 41 min |
| Jul 25, 3:54 PM MST | Special Weather Statement | TWC | 51 min | |
| Jul 25, 3:55 PM MST | Severe Thunderstorm Warning | TWC | Pima | 50 min |
| Jul 25, 4:00 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
| Jul 25, 4:04 PM MST | Flash Flood Warning | TWC | Pima | 116 min |
| Jul 25, 4:20 PM MST | Special Weather Statement | TWC | Pima | 40 min |
| Jul 25, 4:37 PM MST | Areal Flood Advisory | TWC | Pima | 73 min |
Nearby
Dust Storm Warnings in Arizona, 2019Every dust storm warning 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.