Message:23375 In: NEWS.WW
From: LU9DCEDate: Mon, 01 Jun 26 07:45:00 Z
Newsgroups: NEWS.WW
Subject: STORM PREDICTION CENTER 01-JUN
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PYTHON SCHEDULED NEWSLETTERS (PSN)
COPYRIGHT 2026 - EDUARDO A. CASTILLO
+----------------------------------------------------------------------------+
SPC SEVERE THUNDERSTORM WATCH 259
WW 259 SEVERE TSTM IA NE 010230Z - 010800Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 259
NWS STORM PREDICTION CENTER NORMAN OK
930 PM CDT SUN MAY 31 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN IOWA
EASTEARN NEBRASKA
* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 930 PM
UNTIL 300 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
SUMMARY...STRONG TO SEVERE THUNDERSTORMS MAY DEVELOP THROUGH LATE
EVENING INTO THE OVERNIGHT, WITH LARGE HAIL AS THE PRIMARY HAZARD
WITHIN AN UNSTABLE ENVIRONMENT.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF TEKAMAH
NE TO 40 MILES SOUTH SOUTHEAST OF OMAHA NE. FOR A COMPLETE DEPICTION
OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU9).
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 257...WW 258...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR
27020.
..GUYER
READ MORE
========================================
SPC SEVERE THUNDERSTORM WATCH 258
WW 258 SEVERE TSTM KS MO 010155Z - 010900Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 258
NWS STORM PREDICTION CENTER NORMAN OK
855 PM CDT SUN MAY 31 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN KANSAS
WESTERN AND CENTRAL MISSOURI
* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 855 PM
UNTIL 400 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
TO 2.5 INCHES IN DIAMETER POSSIBLE
SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A TORNADO OR TWO POSSIBLE
SUMMARY...SEVERE STORMS WILL DEVELOP ACROSS EASTERN KANSAS INTO
WESTERN MISSOURI THE REMAINDER OF THE EVENING. LARGE HAIL SHOULD BE
THE MOST COMMON RISK, BUT LOCALLY DAMAGING WIND POTENTIAL MAY ALSO
DEVELOP. SOME TORNADO RISK AS WELL, ESPECIALLY ALONG A RESIDUAL
OUTFLOW BOUNDARY.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES EAST SOUTHEAST
OF KNOB NOSTER MO TO 35 MILES WEST NORTHWEST OF EMPORIA KS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).
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 257...
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO
2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A
FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR
29020.
..GUYER
READ MORE
========================================
SPC SEVERE THUNDERSTORM WATCH 257
WW 257 SEVERE TSTM IA MN NE SD 010105Z - 010600Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 257
NWS STORM PREDICTION CENTER NORMAN OK
805 PM CDT SUN MAY 31 2026
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHWEST IOWA
SOUTHWEST MINNESOTA
NORTHEAST NEBRASKA
SOUTHEAST SOUTH DAKOTA
* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 805 PM
UNTIL 100 AM CDT.
* PRIMARY THREATS INCLUDE...
SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
A TORNADO OR TWO POSSIBLE
SUMMARY...A FEW SUPERCELLS AND SEVERE MULTICELLS WILL BE POSSIBLE
THROUGH THE EVENING. LARGE HAIL, LOCALLY DAMAGING WINDS WILL REMAIN
POSSIBLE, AND SOME TORNADO RISK WILL EXIST PARTICULARLY WITH STORMS
INITIATING/OCCURRING NEAR THE BOUNDARY ACROSS THE REGION.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST
OF WORTHINGTON MN TO 10 MILES SOUTHEAST OF SIOUX CITY IA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).
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.
&&
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
29020.
..GUYER
READ MORE
========================================
SPC SEVERE THUNDERSTORM WATCH 259 STATUS REPORTS
WW 0259 STATUS UPDATES
STATUS REPORT ON WW 259
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 E OLU TO
20 NW TQE TO 10 SE SUX.
.KERR..06/01/26
ATTN...WFO...DMX...OAX...
STATUS REPORT FOR WS 259
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC003-009-027-029-047-071-085-129-133-137-145-155-161-165-173-
010640-
IA
. IOWA COUNTIES INCLUDED ARE
ADAMS AUDUBON CARROLL
CASS CRAWFORD FREMONT
HARRISON MILLS MONONA
MONTGOMERY PAGE POTTAWATTAMIE
SAC SHELBY TAYLOR
NEC021-025-053-055-153-155-177-010640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BURT CASS DODGE
DOUGLAS SARPY SAUNDERS
WASHINGTON
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
READ MORE
========================================
SPC SEVERE THUNDERSTORM WATCH 258 STATUS REPORTS
WW 0258 STATUS UPDATES
STATUS REPORT ON WW 258
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
.KERR..06/01/26
ATTN...WFO...ICT...TOP...SGF...EAX...
STATUS REPORT FOR WS 258
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KSC001-003-011-015-017-031-035-045-059-073-079-087-091-103-107-
111-115-121-127-139-173-177-191-197-207-209-010640-
KS
. KANSAS COUNTIES INCLUDED ARE
ALLEN ANDERSON BOURBON
BUTLER CHASE COFFEY
COWLEY DOUGLAS FRANKLIN
GREENWOOD HARVEY JEFFERSON
JOHNSON LEAVENWORTH LINN
LYON MARION MIAMI
MORRIS OSAGE SEDGWICK
SHAWNEE SUMNER WABAUNSEE
WOODSON WYANDOTTE
MOC013-015-029-033-037-039-047-053-059-083-085-089-095-101-105-
107-141-159-165-167-177-185-195-217-010640-
MO
. MISSOURI COUNTIES INCLUDED ARE
BATES BENTON CAMDEN
CARROLL CASS CEDAR
CLAY COOPER DALLAS
READ MORE
========================================
SPC SEVERE THUNDERSTORM WATCH 257 STATUS REPORTS
WW 0257 STATUS UPDATES
STATUS REPORT ON WW 257
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSW SUX
TO 30 NW SLB TO 5 NNW SPW.
REMAINING VALID PORTION OF WW 257 MAY BE ALLOWED TO EXPIRE AT 01/07Z.
.KERR..06/01/26
ATTN...WFO...FSD...
STATUS REPORT FOR WS 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
IAC041-059-093-193-010600-
IA
. IOWA COUNTIES INCLUDED ARE
CLAY DICKINSON IDA
WOODBURY
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
========================================
SPC MD 929
MD 0929 CONCERNING SEVERE THUNDERSTORM WATCH 258... FOR PORTIONS OF
EASTERN KANSAS AND WESTERN MISSOURI
MESOSCALE DISCUSSION 0929
NWS STORM PREDICTION CENTER NORMAN OK
1053 PM CDT SUN MAY 31 2026
AREAS AFFECTED...PORTIONS OF EASTERN KANSAS AND WESTERN MISSOURI
CONCERNING...SEVERE THUNDERSTORM WATCH 258...
VALID 010353Z - 010600Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 258
CONTINUES.
SUMMARY...MULTIPLE AREAS OF THUNDERSTORMS ARE DEVELOPING/ONGOING
ACROSS EASTERN KANSAS AND WESTERN MISSOURI. THIS TREND WILL CONTINUE
INTO THE OVERNIGHT. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN
THREATS, BUT A TORNADO CANNOT BE RULED OUT FOR ANY STORMS
INTERACTING WITH SURFACE BOUNDARIES.
DISCUSSION...SEVERAL AREAS OF THUNDERSTORMS ARE UNDERWAY ACROSS
EASTERN KANSAS AND WESTERN MISSOURI THIS EVENING. ONE SUCH AREA IS
ACROSS THE FLINT HILLS WHERE EARLIER SPLITTING SUPERCELLS OCCURRED
AND PRODUCED REPORTS OF 1-2" HAIL (NEAR EMPORIA). ADDITIONALLY, A
BRIEF TORNADO WAS REPORTED BY SPOTTERS NEAR MADISON, KS (GREENWOOD
COUNTY) AS THE RIGHT SPLIT INTERACTED WITH A DIFFUSE OUTFLOW
BOUNDARY. THE LEFT SPLIT HAS SINCE DISSIPATED AS IT MOVED NORTHEAST
TOWARD KANSAS CITY, BUT THE RIGHT SPLIT IS VERY SLOWLY MOVING EAST
ALONG THE BOUNDARY. ADDITIONAL THUNDERSTORMS ACROSS THE FLINT HILLS
IN THE WAKE OF THE INITIAL CONVECTION.
ADDITIONAL THUNDERSTORMS ARE DEVELOPING FARTHER WEST, NEAR WICHITA,
KS, AND FARTHER NORTH TO THE SOUTHEAST OF SALINA, KS. THE STORMS
NEAR WICHITA HAVE STRUGGLED TO SUSTAIN THEIR INTENSITY, WITH THE
STORMS TO THE NORTH EXHIBITING SUPERCELLULAR CHARACTERISTICS.
LASTLY, RECENTLY RADAR IMAGERY IS SHOWING DEVELOPMENT TO THE
SOUTHEAST OF KANSAS CITY, MO, ACROSS PORTIONS OF WEST-CENTRAL
MISSOURI. ALTHOUGH THESE CELLS HAVE STRUGGLED THROUGH THE EVENING,
LIGHTNING HAS RECENTLY BEEN OBSERVED WITH THIS ACTIVITY.
OVERALL, THE ENVIRONMENT ACROSS EASTERN KANSAS AND WESTERN MISSOURI
REMAINS FAVORABLE FOR SEVERE THUNDERSTORMS THIS EVENING.
THERMODYNAMICALLY, AN IMPRESSIVE NOCTURNAL CAPE RESERVOIR REMAINS IN
PLACE WITH MUCAPE VALUES IN EXCESS OF 4000 J/KG ACROSS WESTERN
PORTIONS OF SEVERE THUNDERSTORM WATCH #258. KINEMATICALLY,
EFFECTIVE-LAYER SHEAR REMAINS BETWEEN 35-50 KNOTS ACROSS THE REGION.
THUS, THE PRIMARY SEVERE THREATS WITH ANY SUSTAINED THUNDERSTORM
UPDRAFT WILL HAVE THE POTENTIAL TO PRODUCE VERY LARGE HAIL AND
DAMAGING WINDS. GIVEN THE PERSISTENT EXTREME INSTABILITY ACROSS THE
REGION, TORNADOES CANNOT BE RULED OUT WITH ANY DISCRETE STORM
INTERACTING WITH ONE OF A MYRIAD OF SURFACE BOUNDARIES (OUTFLOW,
COLD FRONT, DRYLINE, ETC) ACROSS THE WATCH.
WITH TIME, THE SLOW MOVEMENT OF THE STORMS, ESPECIALLY THE FLINT
HILLS CLUSTER, SHOULD TEND TOWARD MESSY STORM INTERACTIONS AND A
TENDENCY TO GROW UPSCALE AS UPDRAFT OUTFLOWS CONGEAL TOGETHER. THIS
MAY RESULT IN AN INCREASING DAMAGING WIND POTENTIAL MANIFEST AS A
SMALL MCS MOVING EAST INTO MISSOURI.
.MARSH.. 06/01/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
LAT...LON 37389330 37649490 37579600 37009653 37029778 38159766
38669733 39259623 39579453 39599325 39229235 37469220
37389330
MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
READ MORE
========================================
SPC JUN 1, 2026 0100 UTC DAY 1 CONVECTIVE OUTLOOK
SPC 0100Z DAY 1 OUTLOOK
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0814 PM CDT SUN MAY 31 2026
VALID 010100Z - 011200Z
..THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE
MID-MISSOURI VALLEY INTO SOUTHEAST KANSAS AND CENTRAL MISSOURI...
..SUMMARY...
SEVERE STORMS REMAIN POSSIBLE THIS EVENING INTO PARTS OF THE
OVERNIGHT IN THE MID-MISSOURI VALLEY INTO THE FLINT HILLS AND
CENTRAL MISSOURI. DAMAGING WINDS, LARGE HAIL, AND PERHAPS A TORNADO
OR TWO ARE THE EXPECTED RISKS.
..01Z UPDATE...
CUMULUS TOWERS CONTINUE TO DEVELOP ALONG THE I-80 CORRIDOR THIS
EVENING. WATER VAPOR IMAGERY SHOWS A VERY SUBTLE SHORTWAVE THAT MAY
ALLOW A FEW STORMS TO DEVELOP NEAR THE MISSOURI VALLEY. THE SLIGHT
RISK HAS BEEN EXPANDED TO ACCOUNT FOR THIS SCENARIO. FARTHER SOUTH,
CONVECTIVE INITIATION IS BECOMING MORE LIKELY NORTHEAST OF WICHITA.
LARGE HAIL AND SEVERE WINDS ARE THE MAIN THREATS, BUT A TORNADO RISK
WILL BE PRESENT WITH STORMS THAT INTERACT FAVORABLY WITH REMNANT
OUTFLOW IN EASTERN KANSAS/WESTERN MISSOURI. ADDITIONAL SEVERE STORMS
ARE ONGOING NEAR SIOUX FALLS. LARGE HAIL AND A TORNADO RISK (FOR THE
NEXT HOUR OR TWO) ARE THE MAIN CONCERNS ALONG WITH ISOLATED SEVERE
GUSTS.
.WENDT.. 06/01/2026
READ MORE
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