Alert archive / Oregon / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 2, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Apr 22, 1998, 8:09 PM PDT for Josephine County, Oregon. It was in force for 46 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
- Apr 22, 1998, 8:09 PM PDT (03:09 UTC)
- Expired
- Apr 22, 1998, 8:55 PM PDT
- In force
- 46 min
- Issued by
- NWS Medford, OR
- Area
- Whole counties
County Josephine County, OR
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 00:00Z, 3.2 hours before the alert went out and 62 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
- 2259 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 121 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 Apr 22, 2:30 PM PDT, 5 hours 39 minutes earlier.
Area forecast discussion, Apr 22, 2:30 PM PDT, 5 hours 39 minutes before
SOUTHWEST OREGON/NORTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEDFORD OR 230 PM PDT WED APR 22 1998 THICK HIGH CLOUD DECK INHIBITING CONVECTION THIS AFTERNOON CASCADES EASTWARD. PLENTY OF HIGH CLOUDS WILL CONTINUE TO STREAM ACROSS REGION TONIGHT SO MOSTLY CLOUDY WAY TO GO. OFFSHORE TROUGH SPLITS AS IT MOVES INLAND LATER THURSDAY WITH NORTHERN PIECE OF ENERGY INTO B.C. WHILE SOUTHERN PIECE HEADS FOR CENTRAL CALIF. STILL ENOUGH DYNAMICS JUST AHEAD OF TROUGH TO PRODUCE SCATTERED SHOWER ACTIVITY MOST AREAS. CONVECTIVE THREAT REMAINS MINIMAL BUT NOT IMPOSSIBLE THURSDAY...CASCADES EAST. SOME THREAT OF SHOWER ACTIVITY TO CONTINUE FRIDAY WITH COOL...MOIST NW FLOW OVER AREA. EXTENDED MODELS AGREE THAT RIDGE TO RETURN OVER WEEKEND WITH GRADUAL WARMING AND DRYING TREND. HOLTZ .KMFR...NONE .KMAX...VCP 32 ...SEE PDXCCFPDX FOR CODED CITIES FORECAST MFR CE 049/065 045/060 040 051553 LMT CE 043/060 039/055 035 051552 RBG CE 048/064 044/060 041 051553 4BK CE 050/058 043/059 042 051553 OTH CE 050/057 045/058 043 051553 YKA CE 044/063 038/059 033 051553 MHS CE 046/058 039/054 035 051553 S11 CE 040/062 034/054 032 051552
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:17 PM PDT | Severe Thunderstorm Warning | MFR | Douglas, Jackson | 48 min |
| Apr 22, 8:45 PM PDT | Severe Thunderstorm Warning | MFR | Jackson, Josephine | 45 min |
| Apr 22, 9:17 PM PDT | Severe Thunderstorm Warning | MFR | Douglas | 63 min |
| Apr 22, 10:15 PM PDT | Severe Thunderstorm Warning | MFR | Douglas | 45 min |
Nearby
Severe Thunderstorm Warnings in Oregon, 1998Every severe thunderstorm warning in 1998
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.