Alert archive / Idaho / Flash Flood Warnings in 1998
Flash Flood Warning 7, NWS Boise, ID
NWS Boise, ID issued this flash flood warning at Jun 12, 1998, 4:49 PM MDT for Ada County, Canyon County, Idaho. It was in force for 61 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 12, 1998, 4:49 PM MDT (22:49 UTC)
- Expired
- Jun 12, 1998, 5:50 PM MDT
- In force
- 61 min
- Issued by
- NWS Boise, ID
- Area
- Whole counties
Counties Ada County, ID, Canyon County, ID
The nearest sounding before it
Boise Airport, ID (KBOI), launched 12:00Z, 10.8 hours before the alert went out and 22 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
- 542 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 965 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 8 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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 12, 3:57 PM MDT, 52 minutes before
IDZ012>014-ORZ021-130000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 357 PM MDT FRI JUN 12 1998 ...FUNNEL CLOUDS POSSIBLE WITH THUNDERSTORMS TODAY... A CITIZEN ONE MILE SOUTH OF EMMETT OBSERVED A FUNNEL CLOUD OVER THE HILLS SOUTH OF EMMETT. THE FUNNEL RETREATED BACK INTO THE CLOUD...BUT FUNNEL CLOUDS MAY BE OBSERVED WITH THUNDERSTORMS THROUGHOUT THIS EVENING. FUNNEL CLOUDS NORMALLY DO NOT PRESENT A THREAT TO LIFE AND PROPERTY. HOWEVER...FUNNEL CLOUDS CAN OCCASIONALLY TOUCH DOWN AS WEAK TORNADOES. IF THREATENING WEATHER DOES APPROACH YOUR AREA...SEEK SHELTER IMMEDIATELY. DS/NWSFO
Special weather statement, Jun 12, 3:57 PM MDT, 52 minutes before
IDZ012>014-ORZ021-130000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOISE ID 357 PM MDT FRI JUN 12 1998 ...FUNNEL CLOUDS POSSIBLE WITH THUNDERSTORMS TODAY... A CITIZEN ONE MILE SOUTH OF EMMETT OBSERVED A FUNNEL CLOUD OVER THE HILLS SOUTH OF EMMETT. THE FUNNEL RETREATED BACK INTO THE CLOUD...BUT FUNNEL CLOUDS MAY BE OBSERVED WITH THUNDERSTORMS THROUGHOUT THIS EVENING. FUNNEL CLOUDS NORMALLY DO NOT PRESENT A THREAT TO LIFE AND PROPERTY. HOWEVER...FUNNEL CLOUDS CAN OCCASIONALLY TOUCH DOWN AS WEAK TORNADOES. IF THREATENING WEATHER DOES APPROACH YOUR AREA...SEEK SHELTER IMMEDIATELY. DS/NWSFO
The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:26 PM MDT | Flash Flood Warning | BOI | Gem | 64 min |
| Jun 12, 1:40 PM MDT | Flash Flood Warning | BOI | Owyhee | 2 hr |
| Jun 12, 2:54 PM MDT | Flash Flood Warning | BOI | Boise | 116 min |
| Jun 12, 1:13 PM MDT | Flash Flood Warning | BOI | Malheur | 117 min |
| Jun 12, 3:05 PM MDT | Flash Flood Warning | BOI | Harney, Malheur | 115 min |
| Jun 12, 5:07 PM MDT | Flash Flood Warning | BOI | Harney, Malheur | 93 min |
Nearby
Flash Flood Warnings in Idaho, 1998Every flash flood 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; the sounding from the Mesonet's radiosonde archive.