Alert archive / Oregon / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 7, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Jul 11, 2001, 3:07 PM PDT for Klamath County, Oregon. It was in force for 53 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 11, 2001, 3:07 PM PDT (22:07 UTC)
- Expired
- Jul 11, 2001, 4:00 PM PDT
- In force
- 53 min
- Issued by
- NWS Medford, OR
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Klamath County, OR
The radar
The Medford radar (KMAX), 85 km from the middle of the area, began a volume at 22:06 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, 10.1 hours before the alert went out and 91 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
- 7 J/kg
- Mixed-layer CIN
- -453 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 68 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 112208 SVRMFR ORC035-112300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEDFORD OR 307 PM PDT WED JUL 11 2001 THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL KLAMATH COUNTY IN SOUTH CENTRAL OREGON THIS INCLUDES THE CITY OF KLAMATH FALLS * UNTIL 400 PM PDT. * AT 300 PM PDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES NORTH OF WORDEN...OR ABOUT 10 MILES SOUTHWEST OF KLAMATH FALLS...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... OVER ALTAMONT AT 325 PM PDT 4 MILES NORTHWEST OF OLENE AT 330 PM PDT 5 MILES NORTHWEST OF DAIRY AT 350 PM PDT 9 MILES SOUTH OF SPRAGUE RIVER AT 400 PM PDT * OTHER LOCATIONS IN THE WARNING INCLUDE MIDLAND AND KENO. HAIL UP TO 1 INCHES IN DIAMETER HAS BEEN REPORTED WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORMO...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. & LAT...LON 4212 12199 4199 12182 4235 12124 4254 12150 $$ 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 Jul 11, 2:30 PM PDT, 37 minutes earlier.
Area forecast discussion, Jul 11, 2:30 PM PDT, 37 minutes before
SOUTHWEST OREGON/NORTHERN CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEDFORD OR 230 PM PDT WED JUL 11 2001 SCATTERED THUNDERSTORMS WILL CONTINUE TONIGHT. UPPER LEVEL LOW ALONG THE NORTHERN CALIFORNIA COAST AND ITS ASSOCIATED SHORTWAVE WILL LIFT NORTHEAST TONIGHT. THIS WILL PROVIDE ADDITIONAL LIFT HELPFUL TO KEEP CONVECTION GOING WELL AFTER SUNSET. ACTIVITY IS MAINLY ACROSS SISKIYOU...EASTERN DOUGLAS AND AREA EAST OF THE CASCADES. EAST OF THE CASCADES WILL HAVE THE MOST WIDESPREAD ACTIVITY BEYOND SUNSET. ON THURSDAY THE AIR MASS WILL NOT BE QUITE AS MOIST. FORECAST OF THETA-E RIDGE AND LIFTED INDEX SUPPORTS FORECAST OF MAINLY EAST SIDE THUNDERSTORMS ON THURSDAY AS FLOW ALOFT ON THE WEST SIDE SHIFTS MORE TOWARD THE SOUTHWEST. UPPER LEVEL TROUGH WILL REMAIN OVER THE EASTERN PACIFIC THROUGH SATURDAY. EXPECT GRADUAL COOLING FRIDAY THROUGH SATURDAY WITH UNSTABLE AFTERNOON AIRMASS SHIFTING A LITTLE FURTHER EAST EACH DAY. BY SUNDAY EXPECT FLOW ALOFT TO BECOME WESTERLY AS A STRONGER REINFORCING TROUGH DROPS SOUTHEAST ACROSS BRITISH COLUMBIA. THIS WILL LEAD TO COOLING AND STABILIZATION OF THE AIR MASS...ALSO COOL AND MAINLY CLOUDY CONDITIONS AT THE COAST. MRF LOOKS OVERDONE IN THE SOUTHWARD PROGRESS OF THIS TROUGH. LATEST AVN RUN ALREADY HAS BACKED OFF ON LOWERING 500 MB HEIGHTS. STILL EXPECT AT LEAST PARTIAL CLOUD COVER INLAND. WILL RAISE TEMPS SLIGHTLY FOR EARLY NEXT WEEK AND TAKE OUT MENTIONS OF SHOWERS. WEYGAND .MFR...SMALL CRAFT ADVISORY FLORENCE OR TO POINT ST GEORGE CA. OTH BB 051/064 050/063 050 162110 4BK BB 051/064 050/065 050 162110 RBG BB 057/082 056/081 055 164220 MFR BB 057/090 055/087 055 165220 LMT BB 048/082 047/081 047 166332 LKV BB 049/083 049/082 049 166332 MHS BB 051/081 050/083 050 165220
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 6:07 PM PDT | Severe Thunderstorm Warning | MFR | Jackson | 53 min |
| Jul 11, 3:19 PM PDT | Flash Flood Warning | MFR | Douglas | 3 hr |
Nearby
Severe 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.