Alert archive / California / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 5, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Jul 10, 2001, 3:56 PM PDT for Siskiyou County, California; Jackson County, Oregon. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 10, 2001, 3:56 PM PDT (22:56 UTC)
- Expired
- Jul 10, 2001, 4:30 PM PDT
- In force
- 34 min
- Issued by
- NWS Medford, OR
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Siskiyou County, CA, Jackson County, OR
The radar
The Medford radar (KMAX), 39 km from the middle of the area, began a volume at 22:57 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 12:00Z, 10.9 hours before the alert went out and 58 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
- 145 J/kg
- Mixed-layer CIN
- -505 J/kg
- Mixed-layer LCL
- 1946 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KMFR 102256 SVRMFR CAC093-ORC029-102330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEDFORD OR 356 PM PDT TUE JUL 10 2001 THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN SISKIYOU COUNTY IN NORTHERN CALIFORNIA SOUTHWESTERN JACKSON COUNTY IN SOUTHWEST OREGON * UNTIL 430 PM PDT. * AT 347 PM PDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 7 MILES SOUTHEAST OF SEIAD VALLEY...OR ABOUT 16 MILES EAST OF HAPPY CAMP...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... OVER RURAL NORTHERN SISKIYOU COUNTY AT 410 PM PDT OVER RURAL SOUTHWESTERN JACKSON COUNTY AT 420 PM PDT IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY BUILDING AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVYF RAIN. LAT...LON 4182 12321 4170 12305 4208 12290 4211 12323 $$ BUNNAG
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 10, 2:30 PM PDT, 1 hour 26 minutes earlier.
Area forecast discussion, Jul 10, 2:30 PM PDT, 1 hour 26 minutes before
SOUTHWEST OREGON/NORTHERN CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEDFORD OR 230 PM PDT TUE JUL 10 2001 ANOTHER ACTIVE EVENING WITH AIRMASS REMAINING UNSTABLE THROUGH WEDNESDAY. UPPER LOW PRESSURE OFF CALIFORNIA COAST CONTINUES TO SEND A SERIES OF SHORT WAVE INTO OUR FORECAST AREA. PRECIPITABLE WATER FROM THIS MORNING IS AROUND 1 INCH AND EXPECT STORMS THIS EVENING TO BE WETTER THAN THE ONES LAST NIGHT. HIGH THETA-E VALUES CONTINUE INTO WEDNESDAY BUT STARTS TO SHIFT EAST OF THE CASCADES ON IN THE AFTERNOON. THUNDERSTORM POTENTIAL CONTINUES INTO THURSDAY. UPPER LEVEL TROUGH WILL BEGIN TO SHIFT TO THE EAST ON FRIDAY. AIRMASS ON THE WEST SHOULD START TO STABILIZE BUT EAST OF THE CASCADES WILL CONTINUE TO BE UNSTABLE. TEMPERATURES COOLING TO SEASONAL NORM THIS WEEKEND WITH UPPER LEVEL TROUGH OVER THE WEST COAST. MODEL SHOWS UPPER LOW DROPPING INTO THE PAC NW ON SUNDAY. AIRMASS COULD BECOME UNSTABLE AGAIN BY EARLY NEXT WEEK. FB .MFR...SMALL CRAFT ADVISORY FLORENCE OR TO POINT ST GEORGE CA. OTH BB 055/064 053/065 050 083222 4BK BB 054/064 053/066 050 083222 RBG BB 059/084 053/085 056 087443 MFR BB 064/096 058/093 058 087453> LMT BB 053/086 049/084 047 086344 LKV BB 053/085 049/083 049 085344 MHS CE 057/086 052/084 053 086342
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 5:42 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 33 min |
| Jul 9, 6:23 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 37 min |
| Jul 9, 7:17 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 28 min |
| Jul 9, 7:24 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 51 min |
Nearby
Severe Thunderstorm Warnings in California, 2001Severe Thunderstorm Warnings in Oregon, 2001Every severe thunderstorm warning in 2001
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.