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LU9DCE > ALERT 18.08.24 09:00l 268 Lines 7824 Bytes #219 (0) @ WW
BID : 6153_LU9DCE
Read: GUEST
Subj: STORM PREDICTION CENTER 18-AUG24
Path: IW8PGT<LU4ECL<LU9DCE
Sent: 240818/0730Z 6153@LU9DCE.TOR.BA.ARG.SOAM LinBPQ6.0.24
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PACKET RADIO STATION - BUENOS AIRES (GF05OM)
PHP SCHEDULED NEWSLETTERS (PSN)
COPYRIGHT 2024 - EDUARDO A. CASTILLO
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SPC SEVERE THUNDERSTORM WATCH 631
WW 631 SEVERE TSTM CA OR WA 172020Z - 180400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 631
NWS STORM PREDICTION CENTER NORMAN OK
120 PM PDT SAT AUG 17 2024
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN CALIFORNIA
WESTERN OREGON
SOUTHWEST WASHINGTON
* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 120 PM UNTIL
900 PM PDT.
* PRIMARY THREATS INCLUDE...
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
SUMMARY...THUNDERSTORMS WILL INTENSIFY THIS AFTERNOON ALONG AND WEST
OF THE CASCADE RANGE, TRACKING NORTHWARD ACROSS THE WATCH AREA. A
FEW SEVERE STORMS ARE EXPECTED, CAPABLE OF LARGE HAIL AND LOCALLY
DAMAGING WIND GUSTS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 35
STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES SOUTH SOUTHWEST
OF MOUNT SHASTA CA TO 60 MILES NORTH NORTHEAST OF PORTLAND OR. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 630...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR
20030.
...HART
READ MORE
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SPC SEVERE THUNDERSTORM WATCH 632 STATUS REPORTS
WW 0632 STATUS UPDATES
STATUS REPORT ON WW 632
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 E HSV TO
15 NNE RMG TO 50 ENE RMG TO 65 S TYS TO 30 WSW AVL.
..LYONS..08/17/24
ATTN...WFO...BMX...FFC...GSP...MRX...
STATUS REPORT FOR WS 632
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC015-019-027-029-055-111-115-121-172340-
AL
. ALABAMA COUNTIES INCLUDED ARE
CALHOUN CHEROKEE CLAY
CLEBURNE ETOWAH RANDOLPH
ST. CLAIR TALLADEGA
GAC011-013-015-045-055-057-059-067-085-089-097-105-115-117-119-
121-129-135-137-139-143-147-157-187-195-219-221-223-227-233-241-
247-257-281-291-297-311-317-172340-
GA
. GEORGIA COUNTIES INCLUDED ARE
BANKS BARROW BARTOW
CARROLL CHATTOOGA CHEROKEE
CLARKE COBB DAWSON
DEKALB DOUGLAS ELBERT
FLOYD FORSYTH FRANKLIN
FULTON GORDON GWINNETT
HABERSHAM HALL HARALSON
HART JACKSON LUMPKIN
READ MORE
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SPC SEVERE THUNDERSTORM WATCH 631 STATUS REPORTS
WW 0631 STATUS UPDATES
STATUS REPORT ON WW 631
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW RDM
TO 20 SE PDX TO 30 NW PDX.
..SQUITIERI..08/18/24
ATTN...WFO...MFR...EKA...PQR...PDT...
STATUS REPORT FOR WS 631
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ORC017-027-029-180240-
OR
. OREGON COUNTIES INCLUDED ARE
DESCHUTES HOOD RIVER JACKSON
WAC011-059-180240-
WA
. WASHINGTON COUNTIES INCLUDED ARE
CLARK SKAMANIA
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
READ MORE
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SPC SEVERE THUNDERSTORM WATCH 630 STATUS REPORTS
WW 0630 STATUS UPDATES
STATUS REPORT ON WW 630
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 E ELY TO
30 NE U24 TO 30 NNW PUC TO 45 N EVW.
..LYONS..08/17/24
ATTN...WFO...SLC...
STATUS REPORT FOR WS 630
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
UTC001-007-013-015-017-021-025-027-031-039-041-053-055-172240-
UT
. UTAH COUNTIES INCLUDED ARE
BEAVER CARBON DUCHESNE
EMERY GARFIELD IRON
KANE MILLARD PIUTE
SANPETE SEVIER WASHINGTON
WAYNE
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
READ MORE
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SPC - NO MDS ARE IN EFFECT AS OF SUN AUG 18 03:00:32 UTC 2024
NO MESOSCALE DISCUSSIONS ARE IN EFFECT AS OF SUN AUG 18 03:00:32 UTC 2024.
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SPC AUG 18, 2024 0100 UTC DAY 1 CONVECTIVE OUTLOOK
SPC 0100Z DAY 1 OUTLOOK
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0745 PM CDT SAT AUG 17 2024
VALID 180100Z - 181200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ALONG/JUST EAST OF
THE WASHINGTON/OREGON CASCADES...
...SUMMARY...
SCATTERED SEVERE THUNDERSTORMS WILL SPREAD ACROSS PORTIONS OF
SOUTHWEST WASHINGTON THIS EVENING. HAIL/WIND REMAIN POSSIBLE.
ISOLATED DAMAGING GUSTS ARE ALSO EXPECTED WITH CONVECTION ACROSS
PORTIONS OF THE SOUTHERN APPALACHIANS INTO THE OHIO VALLEY.
...01Z UPDATE...
NOTABLE SHORT-WAVE TROUGH IS CURRENTLY EJECTING NORTH ACROSS
NORTHERN CA INTO WESTERN OR. WATER-VAPOR IMAGERY ALSO SUGGESTS A
LEAD DISTURBANCE MAY BE ASSOCIATED WITH A FAIRLY EXTENSIVE CLUSTER
OF DEEP CONVECTION AS IT ADVANCES ACROSS NORTHERN OR INTO SOUTHWEST
WA. SURFACE TEMPERATURES ARE HOLDING IN THE LOWER 90S ACROSS LOWER
ELEVATIONS OF SOUTHERN WA EAST OF THE CASCADES. LATEST DIAGNOSTIC
DATA SUGGESTS A NARROW CORRIDOR OF HIGHER INSTABILITY EXTENDS
ALONG/JUST EAST OF THE CASCADES. WHILE CONVECTION SHOULD
SPREAD/DEVELOP NORTH ALONG THE HIGHER TERRAIN, NORTHEASTERLY
LOW-LEVEL FLOW SHOULD CONTRIBUTE TO ROBUST UPDRAFTS CAPABLE OF
GENERATING HAIL/WIND.
NORTHWESTERLY FLOW IS DEEPENING ACROSS THE SOUTHERN APPALACHIANS
EARLY THIS EVENING AS THE UPPER TROUGH PROGRESSES STEADILY EAST. A
BROKEN BAND OF ORGANIZED CONVECTION IS PROPAGATING SOUTHEAST ACROSS
NORTHWESTERN SC/NORTHERN GA THROUGH AN AXIS OF INSTABILITY
CHARACTERIZED BY 1500 MLCAPE. THIS ACTIVITY MAY PRODUCE LOCALLY
DAMAGING GUSTS FOR THE NEXT FEW HOURS, BUT OTHERWISE WILL GRADUALLY
DECREASE IN INTENSITY AS BOUNDARY LAYER COOLS THIS EVENING.
MORE ISOLATED CONVECTION IS OBSERVED ACROSS KY INTO THE UPPER OH
VALLEY. THIS ACTIVITY WILL ALSO GRADUALLY WANE IN INTENSITY AS THE
EVENING PROGRESSES AND LOW-LEVEL LAPSE RATES WEAKEN. UNTIL THEN, A
FEW GUSTS MAY BE NOTED.
..DARROW.. 08/18/2024
READ MORE
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