Alert archive / California / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 2, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Jul 1, 1997, 8:03 PM PDT for Siskiyou County, California. It was in force for 47 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
- Jul 1, 1997, 8:03 PM PDT (03:03 UTC)
- Expired
- Jul 1, 1997, 8:50 PM PDT
- In force
- 47 min
- Issued by
- NWS Medford, OR
- Area
- Whole counties
County Siskiyou County, CA
The radar
The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 03:07 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 3.1 hours before the alert went out and 89 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
- 9 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1745 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 75 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 Medford, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 1, 2:03 PM PDT, 6 hours earlier.
Area forecast discussion, Jul 1, 2:03 PM PDT, 6 hours before
SOUTHWEST OREGON NORTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEDFORD OR 230 PM PDT TUE JUL 01 1997 MID-HI CLDS HV SPRD INTO NRN CA/SRN ORE THS AFTN AHD OF THE WK LOPRES SYS NR 39N 127W. THESE CLDS HV HELD TMPS DN BLO CONVECTIVE TMP SO FAR..THUS CNVTN HAS YET TO DVLP. XPC SM DVLPMT LT THS AFTN INTO THS EVE..BUT MNLY OVR THE CASCDS/SISKYS EWD. BY MIDNGT THE LO WL BE E OF AREA WITH ONLY A MINIMAL RISK OF SHWRS TWD MRNG IN FAR NE CA/S CNTL ORE. HGTS/THKNS POP UP QUICKLY WED FOR RAPID WRMG INLD. DRY STBL CONDS WL RETURN ACRS THE AREA. GRAD BTWN LWR PRES IN THE E AND E PAC HIPRES BLDG IN WL CREATE BRZY N WNDS ALG THE SRN ORE CST..BUT OFSHR FLO WL BE LMTD. THE WRMG TREND WL CONT THU WITH INLD AFTN TMPS INTO THE 80S TO NR 90. IN THE XTNDD 4TH OF JULY WKND PD WK CYCLONIC FLO WL PUSH INLD..BRINGING SLGT COOLG BY SAT NGT IN WRN SECTIONS..AND THRUOUT THE AREA BY SUN. SHWRS/AFTN TSTMS WL BE PSBL SAT. LOOKS LIKE SUMMER HAS FINALLY ARRIVED BURBACK .KMFR...NONE. .KMAX...VCP32...OPERATIONAL ...SEE PDXCCFPDX FOR CODED CITIES FORECAST MFR UU 051/083 053/089 055 092-00 LMT UU 045/077 047/083 049 093100 RBG BU 053/078 055/084 056 092000 4BK UU 052/069 052/072 054 092000 OTH BU 054/068 054/070 055 092000 YKA UU 044/081 046/088 048 092-00 MHS UU 043/076 046/083 049 092-00 S11 UU 042/076 044/085 046 093100
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 8:18 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 32 min |
Nearby
Severe Thunderstorm Warnings in California, 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.