Alert archive / Arizona / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 34, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jun 30, 2024, 4:05 PM MST for Cochise County, Arizona. It was in force for 40 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
- Jun 30, 2024, 4:05 PM MST (23:05 UTC)
- Expired
- Jun 30, 2024, 4:45 PM MST
- In force
- 40 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 83 km from the middle of the area, began a volume at 23:09 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, 11.1 hours before the alert went out and 113 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
- 2118 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -65 m²/s²
- 0-3 km storm-relative helicity
- -61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 30, 1:21 PM MST, 2 hours 44 minutes earlier.
Area forecast discussion, Jun 30, 1:21 PM MST, 2 hours 44 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 121 PM MST Sun Jun 30 2024 .SYNOPSIS...Active monsoon pattern for the next 7 days will bring daily chance of showers and thunderstorms. Some storms will generate strong winds and locally heavy rainfall. && .DISCUSSION...Latest visible satellite imagery this afternoon is showing an MCV near Rocky Point with generally partly to mostly cloudy skies across much of southeast Arizona. The clouds held on a bit more than expected through the midday hours so that has certainly slowed the warming and destabilization process. Where skies have cleared out for sufficient time, we're seeing thunderstorms from in the last hour across portions of Graham/Greenlee/Cochise Counties. Another mid level disturbance is quickly approaching from the east-southeast and that will help aid in deeper layer lift this afternoon into the evening hours. MLCAPE values will increase to around 1000-1500 J/KG as CIN diminishes over the next hour or two. This will be enough to result in convective development and the latest HRRR and UofA WRF model runs are in agreement on this. Given the anomalously high moisture levels, flash flooding will be a concern along with strong and gusty outflow winds as DCAPE values range from about 800-1200 J/KG across our forecast area. These gusty outflow winds may produce a large area of blowing dust to the NW of Tucson. A Blowing Dust Advisory is in place for this and any short fuse intense dust storms will be covered with Dust Storm Warnings if needed. Convective activity may persist well into the evening hours, especially from Tucson westward. Abundant moisture remains in place for Monday, though just how much activity we see will partially be dependent on what takes place today/tonight. The flow does become a bit more southwesterly on Monday. The moisture will remain with us through about Wednesday with PWAT values ranging from about 1.4 inches to 1.7 inches across the forecast area to keep the active period ongoing. Thereafter, the ensembles are showing the mid/upper high reconsolidating to our north/northwest. This will change the flow to become more northeasterly. However, some drier air will also start filtering in from the north and keep the best chances for daily showers and thunderstorms from Tucson south and eastward. && .AVIATION...Valid through 02/00Z. SCT-BKN clouds at 8-12k ft AGL thru the fcst period. Scattered- numerous SHRA/TSRA 30/20Z-01-04Z, then becoming isolated -SHRA/-TSRA overnight. Another round of SCT -SHRA/-TSRA aft 01/18Z thru the end of the fcst period. Expect brief MVFR conds nr storms. SFC winds 10 kts or less with the occasional afternoon gusts, except stronger due to gusty outflows from storms. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Relatively deep moisture will stick around through the forecast period. Scattered ton numerous showers and thunderstorms this afternoon and tonight. The upcoming week will see daily chances of afternoon and evening showers and thunderstorms. Strong and erratic gusty winds of 40 mph or higher can be expected with any storm development, along with locally brief heavy rainfall. Outside of thunderstorm winds, 20-foot winds will generally be 15 mph or less each afternoon with the occasional gust of 20 mph. Min RHs will generally be around 20% in the valleys and 30s in the mountains with good overnight recoveries. && .TWC WATCHES/WARNINGS/ADVISORIES... Blowing Dust Advisory from 3 PM this afternoon to 10 PM MST this evening for AZZ502-504>506. Flood Watch from this afternoon through this evening for AZZ502>507-513>515. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
In the hours before
Local storm report, Jun 30, 3:41 PM MST, 24 minutes before
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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 |
|---|---|---|---|---|
| Jun 29, 9:36 PM MST | Dust Storm Advisory | TWC | Cochise | 114 min |
| Jun 29, 11:05 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 40 min |
| Jun 30, 2:00 AM MST | Blowing Dust Advisory | TWC | Pima, Pinal | 18 hr |
| Jun 30, 2:00 AM MST | Flood Watch | TWC | Cochise, Graham, Pima, Pinal, Santa Cruz | 17 hr |
| Jun 30, 1:27 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 48 min |
| Jun 30, 1:57 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 48 min |
| Jun 30, 2:03 PM MST | Flash Flood Warning | TWC | Cochise, Graham | 3 hr |
| Jun 30, 2:47 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 43 min |
| Jun 30, 3:17 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Graham | 43 min |
| Jun 30, 3:19 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Pima, Santa Cruz | 41 min |
| Jun 30, 3:23 PM MST | Severe Thunderstorm Warning | TWC | Pima | 52 min |
| Jun 30, 3:37 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 38 min |
| Jun 30, 3:55 PM MST | Severe Thunderstorm Warning | TWC | Cochise, Santa Cruz | 50 min |
| Jun 30, 4:29 PM MST | Severe Thunderstorm Warning | TWC | Graham, Greenlee | 46 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2024Every severe thunderstorm warning in 2024
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.