Alert archive / Arizona / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 13, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 17, 1998, 5:41 PM MST for Pima County, Arizona. It was in force for 49 min. 1 report 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
- Jul 17, 1998, 5:41 PM MST (00:41 UTC)
- Expired
- Jul 17, 1998, 6:30 PM MST
- In force
- 49 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pima County, AZ
The radar
The Tucson radar (KEMX), 112 km from the middle of the area, began a volume at 00:40 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 17, 6:00 PM MST | Thunderstorm Wind 82 | Tucson, AZ | A mobile home in the Tucson Estates had its roof ripped off. At the Ryan Field airport winds gusting up to 94 mph partially ripped the roof off of a hanger and flipped over several small planes. |
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, 0.7 hours before the alert went out and 84 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
- 979 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 3214 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
216 WUUS1 KTUS 180042 RRA SVRTUS AZC019-180130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 541 PM MST FRI JUL 17 1998 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN PIMA COUNTY IN SOUTHERN ARIZONA * UNTIL 630 PM MST * AT 540 PM MST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN THE VICINITY OF NORTHWEST TUCSON MOVING SOUTH SOUTHWEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RYAN FIELD BY 605 PM MST MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 6:25 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 min |
| Jul 17, 7:25 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 min |
| Jul 17, 7:33 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 47 min |
| Jul 17, 8:09 PM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
| Jul 17, 8:17 PM MST | Severe Thunderstorm Warning | TWC | Graham | 48 min |
| Jul 17, 11:14 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 46 min |
| Jul 18, 12:15 AM MST | Severe Thunderstorm Warning | TWC | Pima | 90 min |
| Jul 18, 1:44 AM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Jul 18, 1:37 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 48 min |
| Jul 18, 2:08 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 62 min |
| Jul 18, 2:44 PM MST | Severe Thunderstorm Warning | TWC | Pima | 46 min |
| Jul 18, 3:25 PM MST | Severe Thunderstorm Warning | TWC | Pima | 45 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; radar from the NEXRAD Level II archive.