Thursday, December 1, 2022

...SEVERE WEATHER OUTLOOK AND EXCESSIVE RAINFALL OUTLOOK...

 


THERE IS NO SEVERE STORMS FORECAST IN THE FORSEEABLE FUTURE.  STORM PREDICITION CENTER FOR DAILY UPDATES.  THERE ARE SOME AREAS WITH A CHANCE OF THUNDERSTORMS. 

THERE ARE SOME AREAS WITH A MARGINAL RISK FOR EXCESSIVE RAINFALL. FORECAST MAPS FROM WEATHER PREDICTION CENTER BELOW.

RTW

SEVERE STORM OUTLOOK







EXCESSIVE RAINFALL OUTLOOK

DAY1 


DAY 2


DAY3

DAY 5 A (SLIGHT RISK)


ANIMATED MAPS

CHANCE FOR THUNDERSTORMS


EXCESSIVE RAINFALL OUTLOOK


WPC NATIONAL FORECAST MAP 


NATIONAL RADAR MAP


GEFS ENSEMBLE MODEL



Tuesday, November 29, 2022

...Particularly Dangerous Situation (PDS) Tornado Watch 572...

 


STORM PREDICTION CENTER ISSUES  (PDS) TORNADO WATCH #572

HazardTornadoesEF2+ Tornadoes
LikelihoodHighHigh
Severe Wind65 kt+ Wind
HighLow
Severe Hail2"+ Hail
ModerateModerate
   SEL2

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 572
   NWS Storm Prediction Center Norman OK
   1210 PM CST Tue Nov 29 2022

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Southeast Arkansas
     Northern and Central Louisiana
     Central Mississippi

   * Effective this Tuesday afternoon and evening from 1210 PM until
     700 PM CST.

   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...

   * Primary threats include...
     Numerous tornadoes expected with a few intense tornadoes likely
     Scattered large hail and isolated very large hail events to 2
       inches in diameter likely
     Scattered damaging wind gusts to 70 mph likely

   SUMMARY...Supercells are expected to develop this afternoon and
   track northeastward across much of northeast Louisiana and central
   Mississippi.  Parameters appear favorable for strong and
   long-tracked tornadoes this afternoon and early evening.

   The tornado watch area is approximately along and 80 statute miles
   north and south of a line from 25 miles north of Fort Polk LA to 55
   miles south of Tupelo MS. For a complete depiction of the watch see
   the associated watch outline update (WOUS64 KWNS WOU2).

   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.

   &&

   AVIATION...Tornadoes and 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 500. Mean
   storm motion vector 24035.

   ...Hart




NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: November 29, 2022
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...POTENTIALLY DANGEROUS SITUATION (PDS) IS SETTING UP FOR THIS AFTERNOON AND EVENING...

 


Mesoscale Discussion 1978
   NWS Storm Prediction Center Norman OK
   1120 AM CST Tue Nov 29 2022

   Areas affected...northern LA...extreme southeast Arkansas and into
   central MS

   Concerning...Severe potential...Tornado Watch likely 

   Valid 291720Z - 291945Z

   Probability of Watch Issuance...95 percent

   SUMMARY...A PDS tornado watch will be needed by 19z/1pm CT for
   portions of northern Louisiana, extreme southeast Arkansas and into
   central Mississippi. Tornadoes, a couple potentially long-track and
   strong, large hail and damaging gusts will be possible into the
   evening hours.

   DISCUSSION...Rich Gulf boundary-layer moisture continues to rapidly
   return northward across the Lower MS Valley vicinity. Surface
   dewpoints near 65 F have developed as far north as south-central MS
   and northern LA late this morning. Meanwhile, the marine warm front,
   roughly delineating 70 F dewpoints, extends west-to east from
   southeast TX through central LA into southern MS. Moisture should
   continue to rapidly increase across northern LA into far southeast
   AR and MS through the afternoon. A plume of steep midlevel lapse
   rates will continue to overspread the region, aiding in MLCAPE
   increasing to 1000-2000 J/kg by mid-afternoon. Breaks in cloud cover
   across northeast LA into central MS will further aid in
   destabilization as greater heating occurs within these cloud breaks.

   Strong vertical shear, with effective shear magnitudes greater than
   45 kt is already in place across the region. Regional VWPs and
   profilers already show enlarged, favorably curved low-level
   hodographs with 0-1 km SRH values greater than 250 m2/s. Large-scale
   ascent will remain modest across the region, resulting in a large
   warm sector supporting discrete supercells. One or more bands of
   supercells will be possible within low-level confluence zones. 

   A particular dangerous situation is expected to develop across
   northeast LA into central MS through this evening as multiple
   supercells track across the area. Tornadoes, a couple strong and
   long-track, will be possible, in addition to large hail (scattered
   2+ inch) and damaging gusts.

   ..Leitman/Hart.. 11/29/2022


...TODAYS SEVERE WEATHER COVERS A LARGE AREA...

 


MODERATE SEVERE WEATHER THREAT FOR A PORTION OF NORTHEAST LOUISIANA AND MISSISSIPPI.  A SIGNIFICANT THREAT FOR TORNADO IN THE MODERATE RISK AREA AS WELL.  STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR UPDATES.

RTW

ZCZC SPCPWOSPC ALL
   WOUS40 KWNS 290533
   ALZ000-ARZ000-LAZ000-MSZ000-TNZ000-291800-

   PUBLIC SEVERE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1133 PM CST MON NOV 28 2022

   ...Severe thunderstorms expected over parts of the lower Mississippi
   Valley later today and tonight...

   * LOCATIONS...
     Mississippi
     Northeast Louisiana
     Southeast Arkansas
     Far Western Alabama
     Far Southwest Tennessee

   * HAZARDS...
     Several tornadoes, a few intense
     Scattered large hail, some baseball size
     Isolated damaging winds

   * SUMMARY...
     Severe thunderstorms capable of producing tornadoes, very large
     hail, and a few severe wind gusts are expected this afternoon
     into the overnight period across parts of the lower to mid
     Mississippi Valley and parts of the Southeast. A few strong
     tornadoes will be possible.

   Preparedness actions...

   Review your severe weather safety procedures for the possibility
   of dangerous weather today. Stay tuned to NOAA Weather Radio, 
   weather.gov, or other media for watches and warnings. A tornado
   watch means that conditions are favorable for tornadoes to form
   during the next several hours. If a tornado warning is issued for
   your area, move to a place of safety, ideally in a basement or
   interior room on the lowest floor of a sturdy building.

   &&

   ..Squitieri.. 11/29/2022
Severe Weather Outlook

Tornado Probability Outlook (Significant Threat in the black hatched line area)

Damaging Wind Probability Outlook

Hail Probability (Significant Hail threat in the black line hatched area)





Monday, November 28, 2022

...TROPICAL OUTLOOK NOVEMBER 28, 2022...

 

THE TROPICS REMAIN QUIET.  NO THREAT TO THE U.S.

RTW

ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
100 PM EST Mon Nov 28 2022

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

Tropical cyclone formation is not expected during the next 5 days. 

$$
Forecaster Pasch





Friday, November 25, 2022

...TROPICAL OUTLOOK NOVEMBER 25, 2022...

 

HOPE YOU ALL HAD A WONDERFUL THANKSGIVING!

THE TROPICS REMAIN QUIET AS WE GET CLOSER TO THE END OF THE 2022 HURRICANE SEASON.  

THE EURO MODEL DOES NOT SEE MUCH TROPICAL CYCLONE FORMATION IN THE FORESEEABLE FUTURE, BUT THE GFS SHOWS A BIT OF ACTIVITY OVER THE BAHAMAS ATLANTIC AND THE SOUTHERN CARIBBEAN.  NONE OF THAT ACTIVITY WOULD AFFECT THE U.S. MAINLAND.  

DECEMBER IS NOT IMMUNE FROM TROPICAL DEVELOPMENT, SO ANYTHING IS POSSIBLE AFTER THE END OF THE SEASON.  USUALLY THOSE STORMS THAT FORM IN DECEMBER ARE OUT AT SEA STORMS AND ARE USUALLY WEAKER SYSTEMS, SO NO WORRIES ENJOY THE HOLIDAYS.

RTW

000
ABPZ20 KNHC 251738
TWOEP 

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1000 AM PST Fri Nov 25 2022

For the eastern North Pacific...east of 140 degrees west longitude:

Tropical cyclone formation is not expected during the next 5 days.

$$
Forecaster Beven

 




Wednesday, November 23, 2022

...DAY 1-3 SEVERE STORM OUTLOOK...DAY 1-3 NATIONAL FORECAST CHARTS...AND DAY 1-3 PROBABILITY OF SNOW...

 

SEVERE STORM OUTLOOK DAYS 1-3

NO TORNADO RISK FORECAST ONLY CHANCE FOR THUNDERSTORMS 

SPC AC 231619
   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1019 AM CST Wed Nov 23 2022

   Valid 231630Z - 241200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   The risk for severe thunderstorms appears negligible across the U.S.
   today through tonight.

   ...Synopsis...
   Within a belt of westerlies emanating from the mid-latitude Pacific,
   models indicate that there will be further amplification within the
   flow across western North America through this period.  This likely
   will include building mid-level ridging across and inland of the
   U.S./British Columbia Pacific coast, and digging mid-level troughing
   within split downstream branches near and east of the Rockies.  It
   still appears that the more amplified of these perturbations will
   evolve in the southern branch, and include a developing mid-level
   low near the Colorado into New Mexico Rockies later today through
   tonight.

   Farther downstream, as a deep mid-level low continues to form while
   redeveloping across and southeast of the Canadian Maritimes, it
   appears that the persistent confluent mid-level regime across the
   eastern U.S. may become more focused across and just east of the
   Atlantic Seaboard.  Beneath this regime, models indicate that cold
   surface ridging will be maintained and reinforced across the
   Atlantic Seaboard.  As some erosion of this ridging commences across
   the northwestern Gulf of Mexico into portions of the southern Great
   Plains and lower Mississippi Valley, it appears that more prominent
   surface ridging, developing across the Intermountain West and
   Rockies, will begin to build into the Great Plains.  And, surface
   cyclogenesis will remain suppressed within weak surface troughing to
   the lee of the southern Rockies.

   ...Southern Great Plains vicinity...
   On the southwestern periphery of the eastern surface ridging, modest
   low-level moisture return is already underway across and
   north-northeast of the lower Rio Grande Valley.  A gradual
   moistening likely will continue within a narrow plume on the eastern
   periphery of a low-level jet (roughly 30+ kt around 850 mb),
   north-northeastward toward the Ozark Plateau through daybreak
   Thursday.  However, this is occurring above an initially cold/stable
   surface-based layer.  While there probably will be some modification
   of this air mass today through tonight, low cloud cover and
   precipitation will contribute to the maintenance of a substantive
   low-level/near-surface inversion layer across most areas north of
   the middle Texas coastal plain.  Weak boundary-layer destabilization
   appears possible overnight across the coastal plain, but this seems
   likely to remain capped beneath warming layers aloft.
     
   North of a College Station/Temple line into areas near/northwest of
   the Ark-La-Tex, strengthening large-scale forcing for ascent is
   expected to support increasing thunderstorm development late this
   evening into the overnight hours.  Modest to weak elevated
   instability and shear (within the relevant potential convective
   layer) likely will minimize the risk for severe weather.

   ..Kerr/Thornton.. 11/23/2022

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z
   CURRENT UTC TIME: 1707Z (12:07PM), RELOAD THIS PAGE TO UPDATE THE TIME

DAY 2 SEVERE STORM OUTLOOK 
THERE IS A CHANCE FOR TORNADO SEE NEXT PROBABILITY GRAHPHICS
SPC AC 230508

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1108 PM CST Tue Nov 22 2022

   Valid 241200Z - 251200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS PORTIONS OF
   SOUTHEAST TEXAS INTO SOUTHWEST LOUISIANA...

   ...SUMMARY...
   Isolated strong to severe thunderstorms are possible Thursday
   afternoon and evening across the Middle and Upper Texas Coast
   vicinity into southwest Louisiana. Locally damaging gusts and
   perhaps a tornado will be possible.

   ...Middle and Upper TX Coast/Southeast TX/Southwest LA...

   A positive-tilt large-scale upper trough will extend from the
   northern Plains to the southern Rockies early Thursday. Forecast
   guidance continues to vary with the eastward evolution of the
   southern branch of the trough over the southern Plains. Guidance has
   generally trended toward a cut-off upper low developing over the
   southern High Plains, and only shifting slightly eastward by Friday
   morning, though the deterministic GFS in particular is now
   maintaining an open wave and somewhat more progressive trough
   compared to earlier runs. Nevertheless, ensemble guidance still is
   indicating preference toward a cut-off upper low developing,
   bringing enhanced southwesterly mid/upper level flow over
   southern/eastern TX and the lower MS Valley vicinity. 

   At the surface, a trough will extend from western OK into central
   TX, while a cold front shifts southeast across TX/OK/AR through the
   period. Uncertainty still remains regarding surface cyclogenesis
   across TX into the central Gulf coast. The expectation is that only
   modest surface cyclogenesis will occur, limiting rich boundary-layer
   moisture (mid/upper 60s F dewpoints) to the Middle/Upper TX
   Coasts/southeast TX and coastal Louisiana. While the surface cold
   front shifts southeast through the period, a warm front is expected
   to remain just offshore from the LA coast. Numerous showers and
   scattered thunderstorms will be ongoing Thursday morning, limiting
   destabilization despite mid/upper 60s F dewpoints. A few strong to
   severe thunderstorms may develop during the afternoon/evening ahead
   of the cold front as forcing for ascent increases. Low-level winds
   will remain modest, generally less than 25 kt through around 3km.
   However, vertically veering wind profiles, with moderate to strong
   mid/upper level flow will support 40+ kt effective shear magnitudes.
   This will aid in updraft organization, though longevity/intensity of
   organized cells may be tempered by poor thermodynamics. As a result,
   will maintain a Marginal (level 1 of 5) risk primarily for a few
   damaging gusts and perhaps a tornado.

   ..Leitman.. 11/23/2022

   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
   CURRENT UTC TIME: 1715Z (12:15PM), RELOAD THIS PAGE TO UPDATE THE TIME
DAY 2 TORNADO PROBABILITY

DAY 2 DAMAGING WIND OUTLOOK
THERE IS NO CHANCE FOR DAMAGING HAIL EXPECTED!

WPC DAY 1-3 NATIONAL FORECAST CHARTS ANIMATION


DAY 1-3 SNOWFALL PROBABILITY GREATER THAN 4 INCHES





...THE TROPICS REMAIN QUIET NOVEMBER 23, 2022...

 

NOTHING MUCH TO TALK ABOUT, AL REMAINS QUIET IN THE TROPICS AND LOOKS TO BE THIS WAY DURING THE NEXT 5 DAYS.

RTW

094 
ABNT20 KNHC 231112
TWOAT 

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
700 AM EST Wed Nov 23 2022

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

Tropical cyclone formation is not expected during the next 5 days. 

$$
Forecaster Brown