Alert archive / Oregon / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 21, NWS Boise, ID

April 27, 1995Baker County, Oregon

NWS Boise, ID issued this severe thunderstorm warning at Apr 27, 1995, 5:47 PM PDT for Baker County, Oregon. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1995, 5:47 PM PDT (00:47 UTC)
Expired
Apr 27, 1995, 6:45 PM PDT
In force
58 min
Issued by
NWS Boise, ID
Area
Whole counties

County Baker County, OR

The nearest sounding before it

Boise Airport, ID (KBOI), launched 00:00Z, 0.8 hours before the alert went out and 173 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 1995-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boise Airport, ID at 00:00Z on 1995-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3040 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBOI 280048
SVRBOI
ORC001-280145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BOISE ID
647 PM MDT (547 PM PDT) THU APR 27 1995
 
THE NATIONAL WEATHER SERVICE IN BOISE ID HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM MDT (645 PM PDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL OREGON
 
   ...BAKER COUNTY
 
SEVERE THUNDERSTORMS ARE MOVING INTO BAKER COUNTY AS OF 545 PM PDT.
THESE STORMS PRODUCED WINDS IN EXCESS OF 60 MPH AT BROGAN AND WILL
AFFECT BAKER CITY AROUND 610 PM PDT.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 27, 2:12 PM PDT, 3 hours 35 minutes before
IDZALL-272300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
310 PM MST THU APR 27 1995

...THUNDERSTORMS DEVELOP ACROSS IDAHO AND EASTERN OREGON...

THUNDERSTORMS HAVE DEVELOPED THROUGHOUT THE REGION THIS AFTERNOON.
LIGHTNING STRIKES HAVE BEEN DETECTED FROM SOUTHEAST OREGON ALL THE
WAY TO THE CENTRAL IDAHO MOUNTAINS.  RADAR ALSO INDICATES
THUNDERSTORMS DEVELOPING OVER SOUTH CENTRAL IDAHO.  WARM AFTERNOON
TEMPERATURES AND AN APPROACHING WEATHER DISTURBANCE WILL ALLOW THE
THUNDERSTORMS TO CONTINUE DEVELOPING.  LATER THIS AFTERNOON AND INTO
THE EARLY EVENING HOURS SOME OF THESE STORMS MAY CONTAIN SMALL HAIL
AND GUSTY WINDS...ALONG WITH DANGEROUS LIGHTNING.

PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD KEEP AN EYE ON THE SKY
AND BE PREPARED TO MOVE TO SHELTER IF THREATENING WEATHER APPROACHES.
REMEMBER...LIGHTNING CAN STRIKE LONG BEFORE ANY RAINFALL OCCURS...SO
HAVE A SAFETY PLAN AND ALLOW YOURSELF TIMdE TO REACH SHELTER BEFORE
LIGHTNING STRIKES.

.END...NWSFO BOISE...DLB
Local storm report, Apr 27, 3:37 PM PDT, 2 hours 10 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE IDAHO
435 PM MST THU APR 27 1995

FROM NATIONAL WEATHER SERVICE BOISE FOR WSO LEWISTON

1623 ELK CITY OBSERVER REPORTED GRAPE SIZE HAIL WITH THUNDERSTORM".

DLB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 5:25 PM PDTSevere Thunderstorm WarningBOIMalheur65 min

Nearby

Severe Thunderstorm Warnings in Oregon, 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.