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LU9DCE > ALERT 21.04.25 10:03l 484 Lines 13557 Bytes #361 (0) @ WW
BID : 761_LU9DCE
Subj: STORM PREDICTION CENTER 21-APR25
Path: IW8PGT<HB9CSR<IK6IHL<IK7NXU<HB9ON<DK0WUE<DK0WUE<PI8LAP<PA8F<VE3CGR<
VE3TOK<LU9DCE
Sent: 250421/0730Z 761@LU9DCE.TOR.BA.ARG.SOAM LinBPQ6.0.24
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PHP SCHEDULED NEWSLETTERS (PSN)
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SPC TORNADO WATCH 158
WW 158 TORNADO IL IN KY TN 210250Z - 210900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 158
NWS STORM PREDICTION CENTER NORMAN OK
950 PM CDT SUN APR 20 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
SOUTHERN ILLINOIS
SOUTHWEST INDIANA
WESTERN KENTUCKY
WESTERN TENNESSEE
* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 950 PM
UNTIL 400 AM CDT.
* PRIMARY THREATS INCLUDE...
A COUPLE TORNADOES POSSIBLE
ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SUMMARY...THE POTENTIAL FOR SEVERE THUNDERSTORMS, INCLUDING A
DAMAGING WIND AND TORNADO RISK, WILL DEVELOP EAST-NORTHEASTWARD
THROUGH LATE EVENING AND OVERNIGHT, BUT GENERALLY ON AN INCREASINGLY
ISOLATED BASIS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 30 STATUTE MILES
EAST AND WEST OF A LINE FROM 150 MILES NORTH NORTHEAST OF PADUCAH KY
TO 45 MILES SOUTH SOUTHWEST OF DYERSBURG TN. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 155...WW 156...WW 157...
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN
STORM MOTION VECTOR 23030.
...GUYER
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SPC TORNADO WATCH 157
WW 157 TORNADO IL 210155Z - 210900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 157
NWS STORM PREDICTION CENTER NORMAN OK
855 PM CDT SUN APR 20 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
NORTHERN ILLINOIS
* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 855 PM
UNTIL 400 AM CDT.
* PRIMARY THREATS INCLUDE...
A COUPLE TORNADOES POSSIBLE
ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SUMMARY...ASSOCIATED WITH A LINE OF STORMS, A BRIEF TORNADO/WIND
DAMAGE RISK MAY DEVELOP EAST-NORTHEASTWARD ACROSS ADDITIONAL PARTS
OF NORTHERN ILLINOIS THROUGH MID/LATE EVENING.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 30 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF MARSEILLES
IL TO 75 MILES SOUTH SOUTHEAST OF MARSEILLES IL. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 155...WW 156...
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN
STORM MOTION VECTOR 22035.
...GUYER
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SPC TORNADO WATCH 156
WW 156 TORNADO AR MO 202240Z - 210500Z
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 156
NWS STORM PREDICTION CENTER NORMAN OK
540 PM CDT SUN APR 20 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
EASTERN ARKANSAS
FAR SOUTHEAST MISSOURI
* EFFECTIVE THIS SUNDAY AFTERNOON FROM 540 PM UNTIL MIDNIGHT CDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
SUMMARY...SEVERE STORMS INCLUDING SUPERCELLS ARE EXPECTED TO MOVE
INTO THE REGION THIS EVENING, INCLUDING TORNADO POTENTIAL ASIDE FROM
LARGE HAIL AND DAMAGING WINDS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES NORTHEAST OF WALNUT RIDGE AR
TO 25 MILES SOUTHWEST OF MONTICELLO AR. FOR A COMPLETE DEPICTION OF
THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU6).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 154...WW 155...
AVIATION...TORNADOES AND 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 23035.
...GUYER
READ MORE
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SPC TORNADO WATCH 155
WW 155 TORNADO IA IL KY MO 202040Z - 210400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 155
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT SUN APR 20 2025
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
SOUTHEASTERN IOWA
WESTERN AND CENTRL ILLINOIS
FAR WESTERN KENTUCKY
EASTERN MISSOURI
* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1100 PM CDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
SUMMARY...ONGOING STRONG/SEVERE THUNDERSTORMS ARE FORECAST TO
CONTINUE MOVING EASTWARD/NORTHEASTWARD ACROSS MISSOURI THIS
AFTERNOON AND EVENING, SPREADING INTO PARTS OF SOUTHEASTERN IOWA AND
ILLINOIS OVER THE NEXT SEVERAL HOURS. ALONG WITH SOME HAIL RISK,
DAMAGING WIND GUSTS ARE EXPECTED, ALONG WITH POTENTIAL FOR TORNADOES
-- A COUPLE OF WHICH COULD BE STRONG.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHEAST OF BURLINGTON
IA TO 15 MILES EAST SOUTHEAST OF POPLAR BLUFF MO. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU5).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 154...
AVIATION...TORNADOES AND 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 23040.
...GOSS
READ MORE
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SPC TORNADO WATCH 158 STATUS REPORTS
WW 0158 STATUS UPDATES
STATUS FOR WATCH 0158 HAS NOT BEEN ISSUED YET
READ MORE
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SPC TORNADO WATCH 157 STATUS REPORTS
WW 0157 STATUS UPDATES
STATUS FOR WATCH 0157 HAS NOT BEEN ISSUED YET
READ MORE
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SPC TORNADO WATCH 156 STATUS REPORTS
WW 0156 STATUS UPDATES
STATUS FOR WATCH 0156 HAS NOT BEEN ISSUED YET
READ MORE
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SPC TORNADO WATCH 155 STATUS REPORTS
WW 0155 STATUS UPDATES
STATUS REPORT ON WW 155
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 S POF TO
35 S FAM TO 25 WNW SLO.
..SQUITIERI..04/21/25
ATTN...WFO...DVN...LSX...PAH...ILX...
STATUS REPORT FOR WT 155
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ILC003-005-011-021-027-039-051-055-077-081-087-113-115-121-123-
135-139-145-147-153-155-173-181-189-195-199-203-210340-
IL
. ILLINOIS COUNTIES INCLUDED ARE
ALEXANDER BOND BUREAU
CHRISTIAN CLINTON DE WITT
FAYETTE FRANKLIN JACKSON
JEFFERSON JOHNSON MCLEAN
MACON MARION MARSHALL
MONTGOMERY MOULTRIE PERRY
PIATT PULASKI PUTNAM
SHELBY UNION WASHINGTON
WHITESIDE WILLIAMSON WOODFORD
KYC007-210340-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BALLARD
READ MORE
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SPC TORNADO WATCH 154 STATUS REPORTS
WW 0154 STATUS UPDATES
STATUS REPORT ON WW 154
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SW TXK TO
20 N HOT TO 15 ENE TBN.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0506
..SQUITIERI..04/20/25
ATTN...WFO...LZK...TSA...SHV...SGF...EAX...LSX...
STATUS REPORT FOR WT 154
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC005-019-023-027-029-039-045-049-051-053-057-059-061-065-073-
089-091-099-103-105-109-119-125-129-137-141-202340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BAXTER CLARK CLEBURNE
COLUMBIA CONWAY DALLAS
FAULKNER FULTON GARLAND
GRANT HEMPSTEAD HOT SPRING
HOWARD IZARD LAFAYETTE
MARION MILLER NEVADA
OUACHITA PERRY PIKE
PULASKI SALINE SEARCY
STONE VAN BUREN
LAC015-017-119-202340-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO WEBSTER
READ MORE
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SPC MD 509
MD 0509 CONCERNING TORNADO WATCH 157... FOR PORTIONS OF NORTHERN ILLINOIS
MESOSCALE DISCUSSION 0509
NWS STORM PREDICTION CENTER NORMAN OK
0954 PM CDT SUN APR 20 2025
AREAS AFFECTED...PORTIONS OF NORTHERN ILLINOIS
CONCERNING...TORNADO WATCH 157...
VALID 210254Z - 210430Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 157 CONTINUES.
SUMMARY...THE SEVERE THREAT CONTINUES ACROSS TORNADO WATCH 157. A
COUPLE OF SEVERE GUSTS ARE THE MAIN CONCERN, THOUGH A TORNADO CANNOT
BE RULED OUT.
DISCUSSION...A PRIMARY BAND OF CONVECTION PERSISTS AMID VERY STRONG
FORCING ACCOMPANYING AN APPROACHING SURFACE LOW AND UPPER-LEVEL JET
STREAK. DESPITE SCANT BUOYANCY, THE LATEST LOT VAD SHOWS A HODOGRAPH
WITH IMPRESSIVE SIZE AND CURVATURE, INDICATING STRONG LOW-LEVEL WIND
SHEAR, DRIVEN BY VERY STRONG FLOW JUST ABOVE THE SURFACE. WHILE
DECREASING LIGHTNING TRENDS SUGGEST THAT STORMS ARE WEAKENING, THE
INTENSE LOW-LEVEL FLOW/SHEAR SUGGESTS THAT DAMAGING GUSTS MAY STILL
OCCUR WHEREVER DOWNWARD MOMENTUM TRANSPORT MAY OCCUR. A TORNADO ALSO
REMAINS POSSIBLE IF A ROTATING UPDRAFT CAN INGEST ANY REMAINING
SURFACE-BASED BUOYANCY.
..SQUITIERI.. 04/21/2025
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LOT...ILX...DVN...
LAT...LON 40568839 40928885 41308911 41708931 41948922 41998888
41828838 41428803 40988774 40608769 40498805 40568839
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
READ MORE
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SPC APR 21, 2025 0100 UTC DAY 1 CONVECTIVE OUTLOOK
SPC 0100Z DAY 1 OUTLOOK
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0745 PM CDT SUN APR 20 2025
VALID 210100Z - 211200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE MID
MISSISSIPPI VALLEY INTO WESTERN TENNESSEE...
...SUMMARY...
SEVERE THUNDERSTORMS WILL SPREAD ACROSS THE MID MISSISSIPPI VALLEY
INTO WESTERN TENNESSEE THIS EVENING. A FEW TORNADOES REMAIN
POSSIBLE, ALONG WITH THE THREAT OF WIND AND PERHAPS SOME HAIL.
...01Z UPDATE...
STRONG NEGATIVE-TILT SHORT-WAVE TROUGH IS EJECTING NORTHEAST ACROSS
EASTERN KS/WESTERN MO EARLY THIS EVENING. THIS FEATURE IS
CONTRIBUTING TO AN ELONGATED BAND OF CONVECTION THAT CURRENTLY ARCS
FROM WESTERN IL-SOUTHEAST MO-CENTRAL AR-SOUTHEAST TX, COINCIDENT
WITH THE PRIMARY SYNOPTIC COLD FRONT SURGING EAST. OVER THE LAST FEW
HOURS THE MOST CONCENTRATED CORRIDOR OF SUPERCELLS HAS SHIFTED INTO
EASTERN AR WHERE NO LESS THAN FOUR DISTINCT SUPERCELLS ARE SPREADING
ACROSS WESTERN PORTIONS OF WW156. LATEST MODEL GUIDANCE SUGGESTS THE
LLJ WILL INCREASE ACROSS NORTHERN MS/WESTERN TN/KY LATER THIS
EVENING. THERE IS SOME CONCERN THIS ACTIVITY MAY SPREAD A BIT
FARTHER DOWNSTREAM THAN DEPICTED IN EARLIER DAY1 CONVECTIVE OUTLOOK.
FORECAST SOUNDING FOR MEM AT 06Z EXHIBITS MORE THAN ADEQUATE SBCAPE
FOR ROBUST UPDRAFTS, AND STRONG SHEAR IS FAVORABLE FOR THE
MAINTENANCE OF THESE STORMS. WILL ADJUST THE SLGT/MRGL RISKS EAST TO
ACCOUNT FOR THIS SCENARIO.
..DARROW.. 04/21/2025
READ MORE
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