Alert archive / Idaho / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 21, NWS Spokane, WA
NWS Spokane, WA issued this severe thunderstorm warning at Jul 9, 1998, 8:29 PM PDT for Benewah County, Latah County, Idaho. It was in force for 66 min. 3 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
- Jul 9, 1998, 8:29 PM PDT (03:29 UTC)
- Expired
- Jul 9, 1998, 9:35 PM PDT
- In force
- 66 min
- Issued by
- NWS Spokane, WA
- Area
- Whole counties
Counties Benewah County, ID, Latah County, ID
The radar
The Spokane radar (KOTX), 102 km from the middle of the area, began a volume at 03:28 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 9, 8:31 PM PDT | Hail 1 | Emida, ID | 1 inch diameter hail. |
| Jul 9, 8:45 PM PDT | Thunderstorm Wind | St Maries, ID | numerous trees down along St. Joe River. tree down on pickup truck. high winds forced car off the road into a sewer pond. |
| Jul 9, 8:55 PM PDT | Thunderstorm Wind | Potlatch, ID | many power lines and trees down. possible funnel cloud. |
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
Spokane, WA (KOTX), launched 00:00Z, 3.5 hours before the alert went out and 79 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
- 1161 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 2291 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
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 Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 7:17 PM PDT | Severe Thunderstorm Warning | OTX | Latah, Nez Perce | 63 min |
| Jul 9, 8:49 PM PDT | Severe Thunderstorm Warning | OTX | Benewah, Kootenai, Shoshone | 46 min |
| Jul 9, 9:29 PM PDT | Severe Thunderstorm Warning | OTX | Kootenai, Shoshone | 46 min |
| Jul 10, 2:57 PM PDT | Severe Thunderstorm Warning | OTX | Boundary | 48 min |
Nearby
Severe Thunderstorm Warnings in Idaho, 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.