Alert archive / Oregon / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Aug 2, 2009, 7:33 PM PDT for Jackson County, Klamath County, Oregon. It was in force for 31 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 2, 2009, 7:33 PM PDT (02:33 UTC)
- Expired
- Aug 2, 2009, 8:04 PM PDT
- In force
- 31 min
- Issued by
- NWS Medford, OR
- Area
- Storm-based polygon
Counties Jackson County, OR, Klamath County, OR
The radar
The Medford radar (KMAX), 62 km from the middle of the area, began a volume at 02:36 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 |
|---|---|---|---|
| Aug 2, 7:40 PM PDT | HAIL 1 | 15 E Butte Falls, OR | FIRE CREW 4 MILES NORTH OF FOURMILE LAKE WAS OUT IN 3-4 INCHES OF HEAVY RAIN AND REPORTED QUARTER SIZE HAIL BUT VERY LITTLE WIND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 2, 2:39 PM PDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 00:00Z, 2.6 hours before the alert went out and 45 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
- 1353 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 2027 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KMFR 030233 SVRMFR ORC029-035-030315- /O.NEW.KMFR.SV.W.0021.090803T0233Z-090803T0315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEDFORD OR 733 PM PDT SUN AUG 2 2009 THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL KLAMATH COUNTY IN SOUTH CENTRAL OREGON... EAST CENTRAL JACKSON COUNTY IN SOUTHWEST OREGON... * UNTIL 815 PM PDT * AT 733 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM WAS LOCATED OVER EXTREME WEST CENTRAL KLAMATH COUNTY...OR 27 MILES SOUTH OF CRATER LAKE...AND MOVING NORTHWEST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL EASTERN JACKSON COUNTY AT 750 PM PDT RURAL WESTERN KLAMATH COUNTY AT 750 PM PDT PRECAUTIONARY/PREPAREDNESS ACTIONS... IF ON OR NEAR FOUR MILE LAKE...GET OUT OF THE WATER AND MOVE INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DONT BE CAUGHT ON THE WATER IN A THUNDERSTORM A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM PDT SUNDAY EVENING FOR NORTHERN CALIFORNIA AND SOUTHWESTERN OREGON. && LAT...LON 4257 12249 4272 12229 4253 12207 4241 12226 TIME...MOT...LOC 0233Z 134DEG 9KT 4252 12224 $$ SARGEANT/SVEN
1 follow-up statement
000 WWUS56 KMFR 030304 SVSMFR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MEDFORD OR 804 PM PDT SUN AUG 2 2009 ORC029-035-030311- /O.CAN.KMFR.SV.W.0021.000000T0000Z-090803T0315Z/ KLAMATH OR-JACKSON OR- 804 PM PDT SUN AUG 2 2009 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JACKSON AND WEST CENTRAL KLAMATH COUNTIES IS CANCELLED... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE THUNDERSTORM NO LONGER MEETS SEVERE CRITERIA. HOWEVER...THIS STORM IS STILL CAPABLE OF PRODUCING HEAVY RAIN AND OCCASIONAL LIGHTNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM PDT SUNDAY EVENING FOR NORTHERN CALIFORNIA AND SOUTHWESTERN OREGON. LAT...LON 4257 12249 4272 12229 4253 12207 4241 12226 TIME...MOT...LOC 0301Z 134DEG 9KT 4257 12231 $$ SARGEANT
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 5:14 PM PDT | Special Weather Statement | MFR | Klamath | 46 min |
| Aug 2, 5:22 PM PDT | Special Weather Statement | MFR | Klamath | 38 min |
| Aug 2, 5:56 PM PDT | Severe Thunderstorm Warning | MFR | Klamath | 34 min |
| Aug 2, 6:54 PM PDT | Severe Thunderstorm Warning | MFR | Lake | 36 min |
| Aug 2, 11:13 PM PDT | Fire Weather Watch | MFR | Harney, Klamath, Lake | 14 hr |
| Aug 3, 1:07 PM PDT | Red Flag Warning | MFR | Harney, Klamath, Lake | 10 hr |
| Aug 3, 4:02 PM PDT | Special Weather Statement | MFR | Lake | 43 min |
Nearby
Severe Thunderstorm Warnings in Oregon, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.