Alert archive / California / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 1, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Jun 11, 1997, 2:27 PM PDT for Siskiyou County, California; Klamath County, Oregon. It was in force for 63 min. 1 report 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
- Jun 11, 1997, 2:27 PM PDT (21:27 UTC)
- Expired
- Jun 11, 1997, 3:30 PM PDT
- In force
- 63 min
- Issued by
- NWS Medford, OR
- Area
- Whole counties
Counties Siskiyou County, CA, Klamath County, OR
The radar
The Medford radar (KMAX), 52 km from the middle of the area, began a volume at 21:28 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 |
|---|---|---|---|
| Jun 11, 2:30 PM PDT | Hail 1.25 | Tulelake, CA |
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
Medford/Jackson, OR (KMFR), launched 12:00Z, 9.5 hours before the alert went out and 63 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1640 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMFR 112139 RRA SVRMFR ORC035-CAC093-112230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEDFORD OR 227 PM PDT WED JUN 11 1997 THE NATIONAL WEATHER SERVICE IN MEDFORD OR HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM PDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL CALIFORNIA ...NORTHEASTERN SISKIYOU COUNTY IN SOUTH CENTRAL OREGON ...SOUTHERN KLAMATH COUNTY A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 10 MILES EAST OF MACDOEL MOVING SLOWLY NORTHEAST. ITS CURRENT MOVEMENT WILL TAKE THE STORM NEAR TULELAKE AND MERRIL WITHIN THE HOUR. LARGE HAIL...UP TO 1 INCH IS EXPECTED WITH THIS STORM ALONG WITH VERY HEAVY RAIN ANDv GUSTY WINDS. GETTMAN
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 Medford, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 2:17 PM PDT, 10 minutes earlier.
Area forecast discussion, Jun 11, 2:17 PM PDT, 10 minutes before
SOUTHWEST OREGON NORTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEDFORD OR 230 PM PDT WED JUN 11 1997 FAIRLY ACTIVE TSTMS EAST OF CASCADES AND ACRS OUR CA COUNTIES. NICE LINE OF CBS FM WEED TO LAKEVIEW WITH SEVERAL HIGH DBZ STORMS. UPR FORCG MVG THRU THE AREA RIGHT NOW SO EXPCT CONVCTN TO CONTINUE AND MAYBE REACH SVR THS AFTN AND EVNG. INSTABILITY MVG NE TNGHT AND THU WITH AIRMS STABILZG SOME. STIL MAY HV AN ISOLD WK TSTM E OF CSCDS TMRW. ELSWHR FNT DYING AS IT MVS INLAND WITH ONLY VRY LGT PCPN. THS SHD REMAIN THE CASE TNGHT ACROS W SECTIONS. HV LWRD POPS. THNK BEST CHC FOR SHWRS W OF CASCDS DURG DAY THU AS SOME WRAPAROUND MOIST WIL COMBINE WITH INSTAB TO PRODUCE GEN SHWRS TMRW. TROF MVG S OF CWA FRI WITH PARTIAL CLRG EXPECTED. HAV LOWERED POPS TO CLOSE TO NIL FRI. EXTNDD SHWG WRMR AND DRIER WX THRU FIRST OF NEXT WK. .KMFR...NONE .KMAX...VCP21...OPERATIONAL ...SEE PDXCCFPDX FOR CODED CITIES FORECAST MFR WW 052/069 051/077 053 033531 LMT WB 048/064 045/070 042 036321 RBG WW 052/065 051/074 049 034531 4BK WW 050/065 050/070 051 034531 OTH WW 052/064 053/067 052 034531 YKA WB 049/069 046/076 044 035431 MHS WW 048/063 048/069 045 035531 S11 WB 045/063 041/071 040 035321
Nearby
Severe Thunderstorm Warnings in California, 1997Severe Thunderstorm Warnings in Oregon, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.