Alert archive / Idaho / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 7, NWS Boise, ID

April 7, 1995Washington County, Idaho

NWS Boise, ID issued this severe thunderstorm warning at Apr 7, 1995, 6:18 PM MDT for Washington County, Idaho. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Apr 7, 1995, 6:18 PM MDT (00:18 UTC)
Expired
Apr 7, 1995, 6:55 PM MDT
In force
37 min
Issued by
NWS Boise, ID
Area
Whole counties

County Washington County, ID

The radar

The Boise radar (KCBX), 116 km from the middle of the area, began a volume at 00:19 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

Boise Airport, ID (KBOI), launched 00:00Z, 0.3 hours before the alert went out and 109 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.

Skew-T log-pSkew-T log-p diagram, Boise Airport, ID at 00:00Z on 1995-04-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boise Airport, ID at 00:00Z on 1995-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
26 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1807 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

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.

In the hours before

Special weather statement, Apr 7, 5:29 PM MDT, 49 minutes before
IDZ001-080030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
529 PM MDT FRI APR 7 1995

AT 525 PM A STRONG THUNDERSTORM WAS LOCATED IN EXTREME EASTERN MALHEUR
COUNTY OR 10 MILES SOUTHWEST OF WEISER. THIS STORM IS MOVING TO THE
NORTHEAST AT 30 MILES AN HOUR. THIS STORM SHOULD REACH WEISER BY 545 PM.
THIS STORM MAY BRING HEAVY RAIN AND SMALL HAIL.

The office that day

Everything else NWS Boise, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 7:55 PM MDTSevere Thunderstorm WarningBOICanyon, Payette35 min
Apr 7, 8:30 PM MDTSevere Thunderstorm WarningBOICanyon, Gem, Payette30 min
Apr 7, 8:51 PM MDTFlash Flood WarningBOIAda, Boise, Canyon, Gem69 min
Apr 7, 8:51 PM MDTFlash Flood WarningBOIPayette, Washington69 min
Apr 7, 8:51 PM MDTFlash Flood WarningBOIValley69 min
Apr 7, 8:51 PM MDTSevere Thunderstorm WarningBOIAda, Boise, Gem, Valley69 min
Apr 7, 8:51 PM MDTSevere Thunderstorm WarningBOIPayette, Washington69 min
Apr 7, 8:51 PM MDTSevere Thunderstorm WarningBOICanyon69 min

Nearby

Severe Thunderstorm Warnings in Idaho, 1995Every severe thunderstorm warning in 1995

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.