Alert archive / Arizona / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 51, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 11, 1998, 7:09 PM MST for Maricopa County, Arizona. It was in force for 46 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 11, 1998, 7:09 PM MST (02:09 UTC)
- Expired
- Aug 11, 1998, 7:55 PM MST
- In force
- 46 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 7:12 PM MST | Thunderstorm Wind 52 | Buckeye, AZ | Also, a report of .62 inch rain with the storm in 21 minutes. |
| Aug 11, 7:30 PM MST | Thunderstorm Wind 50 | Buckeye, AZ | Winds took down 6 power poles, and forced the closure of I-10 for 1 1/2 hours. A squad car from the Buckeye Police Department received minor damage when crushed by a falling power pole. Two private planes from Pierce Aviation were destroyed and several other p |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 2.2 hours before the alert went out and 198 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
- 736 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 2717 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 7:25 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 45 min |
| Aug 11, 8:18 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 62 min |
| Aug 11, 9:11 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 64 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.