Alert archive / Idaho / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 43, NWS Spokane, WA
NWS Spokane, WA issued this severe thunderstorm warning at Sep 5, 1997, 3:28 PM PDT for Lewis County, Idaho. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 5, 1997, 3:28 PM PDT (22:28 UTC)
- Expired
- Sep 5, 1997, 5:30 PM PDT
- In force
- 2 hr
- Issued by
- NWS Spokane, WA
- Area
- Whole counties
County Lewis County, ID
The radar
The Spokane radar (KOTX), 185 km from the middle of the area, began a volume at 22:29 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
Spokane, WA (KOTX), launched 12:00Z, 10.5 hours before the alert went out and 163 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
- 5 J/kg
- Mixed-layer CIN
- -342 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- -320 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.
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 Spokane, WA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 5, 2:00 PM PDT, 1 hour 28 minutes earlier.
Area forecast discussion, Sep 5, 2:00 PM PDT, 1 hour 28 minutes before
EASTERN WASHINGTON AND NORTH IDAHO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SPOKANE WASHINGTON 200 PM PDT FRI SEP 5 1997 WV IMAGERY INDC ONE BNDRY MVG ACROSS FCST AREA AT THIS TIME WHEREAS THE SFC FRNT IS ALNG THE CASCADES. GRADS INCR BETWEEN SEA/EAT FURTHER SUPPORTING FRNT LOCATION. ENHANCEMENT ON THE WEST SIDE FM SPED MAX WILL PUSH THE FRNT ACROSS THE CASCADES THIS AFTN/EVENING. NONE OF THE 12Z MDLS HAVE A GOOD HANDLE ON THE SITUATION. LONGER TERM WILL FOLLOW THE AVN SINCE IT HAS PERFORMED THE BEST DURING THE LAST WEEK. COOLER AIR WILL MV ACROSS THE FCST AREA ON SAT AS TROF LIFTS TO THE NE. MAJORITY OF THE COOLER AIR WILL RMN IN BC/ALTA. SPLIT FLOW DEVLPS ON SUNDAY AS WESTERLIES RMN IN CANADA AND TROF SETS UP ALNG 135W. RIDGE REBUILDS OVR THE INTERMTN REGION ON SUN AS THERMAL TROF DEVLPS IN THE GREAT BASIN AND BEGINS TO BUILD NORTH. THICKNESSES AND HGHTS ALSO RISE ON SUNDAY FOR WARMER TEMPS. WILL HAVE SCATTERED POPS TNGHT THEN ZERO POPS THRU SUNDAY. GRIDDED MDL TEMPS HAS GEG AT 10.5C AT 850MB AND ABT 17C ON SUNDAY. LONGER TERM...UNTIL THE LARGE RIDGE IN THE SCTRL US BRKS DOWN TEMPS WILL RMN ABV NORMAL. STROBIN ...PRODUCTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE... ...PLEASE SEE SEACCFSEA AND ZONE FORECAST PRODUCTS... GEG 050/071/046/080 3000 CQV 052/073/044/082 3000 S86 050/068/043/077 3000 COE 050/070/045/079 3000 WWP 047/066/041/076 4000 .GEG...NONE
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 3:28 PM PDT | Severe Thunderstorm Warning | OTX | Lewis | 62 min |
Nearby
Severe Thunderstorm Warnings in Idaho, 1997Every severe thunderstorm warning in 1997
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.