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Everything posted by yoda
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I will have to look it up after I get home from work... and I was 3 years old
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BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service State College PA 535 AM EDT Thu May 23 2024 The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Southeastern Centre County in central Pennsylvania... North central Juniata County in central Pennsylvania... Northeastern Mifflin County in central Pennsylvania... Snyder County in central Pennsylvania... Union County in central Pennsylvania... * Until 615 AM EDT. * At 532 AM EDT, a severe thunderstorm was located over Poe Valley State Park, moving east northeast at 50 mph. HAZARD...70 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Numerous reports of downed trees have occurred with this storm over the past 30 minutes * Locations impacted include... Mifflinburg, Woodward, Burnham, Milroy, Highland Park, Middleburg, Yeagertown, McClure, Kreamer, Penns Creek, Beaver Springs, and Reedsville. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a dangerous storm. To stay safe, immediately move inside a well built structure and stay away from windows. This thunderstorm is capable of producing all types of severe weather including large hail, destructive straight line winds and tornadoes. Move quickly to a safe shelter such as an interior room, a bathroom, closet or basement. Frequent cloud to ground lightning is occurring with this severe thunderstorm. Move indoors immediately. Lightning is one of nature`s leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning.
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@high risk @Kmlwx @Eskimo Joe From this mornings AFD regarding Monday... already tossing out the significant severe weather episode words LONG TERM /SUNDAY THROUGH WEDNESDAY/... Shortwave ridging will build again on Sunday keeping convective cvrg isolated and mainly along the I-64 corridor. Memorial Day still looks like a very active severe wx day and the most active of all of next week. A deep upper level trough over the Great Lks region will push a strong cold front through the area Monday evening. Ahead of this front, widespread showers and thunderstorms appear definite with the potential for a significant severe wx episode given moderately strong bulk shear values of 30-40kt, high instability, and moderately steep mid- level lapse rates. GFS forecast soundings also indicate a tornado threat with 0-3 km SRH of over 200 m^2/s^2, EHI of 2-4, and high supercell composite values. The severe threat should end by 06Z Tue with frontal passage. There could still be instability showers Tue afternoon as upper trough axis pivots through, but the deep moisture should have been shunted south and east the night before.
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MCD out for our far NW zones https://www.spc.noaa.gov/products/md/md0891.html Mesoscale Discussion 0891 NWS Storm Prediction Center Norman OK 1128 AM CDT Wed May 22 2024 Areas affected...Western New York into parts upper Ohio Valley Concerning...Severe potential...Watch possible Valid 221628Z - 221830Z Probability of Watch Issuance...40 percent SUMMARY...A severe thunderstorm watch is possible for parts of western/central New York into the upper Ohio Valley. Damaging winds will be the primary threat. An isolated brief tornado and large hail may occur with the stronger, more organized activity. DISCUSSION...Convection has been most intense right ahead of an MCV tracking into northwest Pennsylvania and southwestern New York. Destabilization continues to occur ahead of this activity and farther south into western Pennsylvania and vicinity. Convection is likely to continue in close proximity to the MCV as well as additional development within the Allegheny Mountains. Buoyancy may be more limited into southeast Ohio/northern West Virginia due to cloud cover. Observed morning soundings from the region showed mid-level lapse rates around 7 C/km. Deep layer shear this far east will be weaker given the displacement from the primary synoptic wave in the Upper Midwest. However, some modest increase in shear should occur through the day. Storms will be capable of damaging winds primarily. Some risk for a brief tornado is also evident given modest low-level hodograph turning on area VAD profiles. Large hail could occur with the strongest storms, but weak upper-level flow will likely keep this threat more isolated. A watch may eventually be needed should convective trends warrant. ..Wendt/Hart.. 05/22/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BGM...BUF...CTP...LWX...PBZ...RLX...CLE...
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SPC has nudged the eastern extent of the MRGL risk to the i95 corridor on the 1630z OTLK
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12z NAM NEST and 12z NAM look decent around 6 to 8pm 13z HRRR is nice as well, stormy for the region after 22z to the end of its run
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Morning disco talking up tomorrow potential and Memorial Day .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... Stronger forcing for ascent will move into the area Thursday attendant to an upper trough and strong surface cold front approaching from the Midwest. Cloud debris and the front approaching during the early part of the peak heating window casts some uncertainty to the extent of instability. But, with stronger forcing and shear, there is at least a conditional risk for more organized strong to severe thunderstorms. It remains to be seen just how widespread the threat is, but storms may tend to focus further south and east toward the I-95 corridor where the potential for heating will last longest. Trends will need to be closely monitored over the next 24 hours, as upstream convection over the Midwest will dictate subtle shifts in (1) vort maxes embedded in the large scale flow, and (2) the extent of cloud debris that could inhibit heating. The front itself likely stalls to the north, but a wind shift or pre-frontal trough type feature should shift south Thursday night. Given the front(s) nearby, and lingering troughing and moisture, shower activity could last well into the night. Additional waves along the stalled front may lead to an unsettled Friday, as well. Although forcing and instability look to be a bit less, shower and thunderstorm potential will still be there especially further south near the I-64 corridor closer to the wind shift. It does not look like it will rain the entire day, but rather the potential for showers and thunderstorms will linger, with chances cresting during peak diurnal heating. && .LONG TERM /SATURDAY THROUGH TUESDAY/... The weather pattern over the Memorial Day holiday weekend will be characterized by gradually lowering heights and surface pressures leading to a stormy pattern. Saturday should turn out rather active due to a low amplitude shortwave trough moving across the area that should act to enhance t-storm activity. Sunday appears to be the least active day due to shortwave ridging and some drying. Severe weather risk appears to increase markedly on Memorial Day due to strengthening wind fields aloft and strong shortwave energy moving across the area around the base of a deep upper level trough over the eastern Great Lks. A strong cold front will follow Monday night bringing cooler and drier conditions for the middle of next week.
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SPC day 4 to 8 OTLK has a mention ...Days 6-8/Mon-Wed... Spread among model guidance increases quite a bit by Monday. Some severe potential is possible anywhere from the Southern states to the Mid-Atlantic as the upper trough lifts east/northeast. However, details regarding storm evolution on Day 5/Sun into early Monday, along with differing evolution of the surface pattern by various guidance results in low predictability. By Tuesday and Wednesday, an upper ridge is expected to move from the western U.S. into the Plains. This should mostly shut down severe potential west of the MS River.
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National Weather Service Baltimore MD/Washington DC 409 AM EDT Wed May 22 2024 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-230815- Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- Tidal Potomac from Cobb Island MD to Smith Point VA- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island-District of Columbia-Cecil-Southern Baltimore- Prince Georges-Anne Arundel-Charles-St. Marys-Calvert- Central and Southeast Montgomery-Central and Southeast Howard- Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria- Stafford-Spotsylvania-King George- Central and Southeast Prince William/Manassas/Manassas Park- 409 AM EDT Wed May 22 2024 This Hazardous Weather Outlook is for the Maryland portion of the Chesapeake Bay, Tidal Potomac River, and I-95 corridor through central Maryland, northern Virginia, and District of Columbia. .DAY ONE...Today and Tonight Widely scattered thunderstorms are forecast this afternoon and evening. A couple isolated severe thunderstorms with damaging wind gusts and hail are possible, mainly between 6 PM and 10 PM. Thunderstorms may also produce hazardous winds and waves over area waterways late this afternoon and evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Scattered to numerous thunderstorms are likely Thursday afternoon and early evening. A few storms may be severe with damaging wind gusts and large hail. Daily thunderstorm chances are forecast through the upcoming holiday weekend. A few storms may be severe during the afternoon and evening hours, particularly Saturday and Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed at times.
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LWX mentions very isolated threat tomorrow, chance on Thursday, and then possibly substantial on Monday in the morning AFD Deep layer shear is expected to remain weak Wednesday (AOB 20 kts sfc-500 hPa). However, flow will increase subtly later in the day, and heights will begin to come down slightly as well. This, coupled with above normal temperatures and increasing humidity and instability will lend to a threat of at least widely scattered showers and thunderstorms come afternoon. The threat appears greatest west of I-95 further away from the departing ridge and any associated subsidence. A couple storms could produce a little hail or gusty winds given the increased instability, but the lack of shear will probably keep a more organized or widespread severe weather threat marginal, and relegated to north of US-33/west of US-15 for the most part. Heights fall more appreciably on Thursday as a surface cold front impinges on the area. Latest guidance times the front favorably with peak heating. The background airmass will be very warm and humid, but cloud debris from previous day`s convection over the middle of the country could inhibit more significant CAPE. If higher instability is realized, a more organized threat for strong to severe thunderstorm clusters could develop given the strong surface front and increasing flow/shear aloft in the right entrance region of a seasonably strong upper jet. The threat for strong to severe thunderstorms may be greater south of US-50/I-66 and east of US-15 where the potential for more heating is highest. Activity should gradually dissipate heading into Thursday night as daytime instability wanes and the front sags south. But, the front`s progress will be slow, so the potential of showers may linger well into the night south of US-50/I-66. && .LONG TERM /FRIDAY THROUGH MONDAY/... A front will remain generally north of the Pennsylvania Turnpike through early next week keeping the local area in a warm and humid air mass with the risk of almost daily afternoon and early evening showers and thunderstorms. A well defined 700 mb shortwave-trough is fcst to approach the area Fri night with its axis crossing the area around 18Z Saturday. With shear vectors on the weaker side and slow storm motions, storms Fri afternoon and evening may pose a risk of heavy rainfall and flash flooding. Saturday`s threat really depends on the timing of that shortwave as it appears the trough axis will be too far east to enhance t-storm activity. On Sunday, the models show significant 925-850 mb drying under low- mid level ridging, which is likely to keep t-storm activity isolated at best. On Monday, a potent shortwave-trough and attendant sfc cyclone will move across Ohio and northern Mid-Atlantic. This system could pose a more substantial severe wx threat given strong winds aloft especially if the timing of the frontal passage coincides with peak heating. The latest timing suggests a severe threat during the morning hours, but things could definitely still change between now and next Monday.
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Thursday sounds interesting... from this mornings AFD .LONG TERM /THURSDAY THROUGH SUNDAY/... To the south of a deep upper trough tracking across Quebec will be a series of lower amplitude waves that race toward the Mid- Atlantic region on Thursday. As this occurs, a slow moving cold front is expected to push through the local area by midday into the evening hours. There is fairly strong mid/upper support with a belt of 500-mb west-southwesterlies around 40 to 50 knots. This is accompanied by ample right entrance region jet dynamics within a jet streak running between 100 to 110 knots. The key parameter that will dictate the degree of severe weather threat is the instability. At this point, even global ensembles are showing around 1,000 to 1,500 J/kg of surface-based CAPE on Thursday. This would be more than adequate to support severe convection given the extent of vertical shear in the profile. However, as usual, the near to short term trends of cloud cover which inhibits convective potential will need to be monitored ahead of the event. Besides the threat for showers and strong/severe thunderstorms, it should be a very warm day with decent humidity owing to persistent south-southwesterlies. Forecast highs are in the mid/upper 80s, with heat indices approaching the low 90s. The frontal boundary eventually slides off to the south by Friday morning.
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What's going on in Cecil county? Never seen this before from LWX BULLETIN - EAS ACTIVATION REQUESTED Law Enforcement Warning MD Cecil County Department of Emergency Services Relayed by National Weather Service Baltimore MD/Washington DC 622 AM EDT Mon May 20 2024 ...Law Enforcement Warning... The following message is transmitted at the request of CCSO. Police activity in the area. Please stay indoors. There is currently no threat to the public. $$ OnSolve-e9a5f08051364d648cad1bae12903c97/MD Cecil County Department of Emergency Services
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LWX hinting at chance of severe next week in their afternoon AFD LONG TERM /TUESDAY THROUGH SATURDAY/... A broad upper level ridge is forecast to be remain in place over the eastern seaboard on Tuesday with high pressure at the surface. A southerly return flow will lead to increasingly warming temperatures through the middle parts of next week. The SFC high pressure on Tuesday will keep the region dry, but an approaching cold front from the west will bring increasing chances for showers and thunderstorms Wednesday through Friday. Model guidance has trended slower with the mid-week system and there remains some uncertainty if there will be enough instability (CAPE) that overlaps with the favorable period for shear to produce a threat for severe weather. SPC is focusing on the Ohio Valley for SVR weather Wednesday into Thursday, but the CIPS machine learning model continues to suggest that there is a chance for isolated severe weather in our region during the middle and later parts of next week.
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Been pouring the past hour here
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Looks like its raining down there
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https://www.yahoo.com/news/houston-recovery-mode-storm-kills-131840576.html
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https://www.wpc.ncep.noaa.gov/metwatch/metwatch_mpd_multi.php?md=0283&yr=2024 Mesoscale Precipitation Discussion 0283 NWS Weather Prediction Center College Park MD 135 PM EDT Fri May 17 2024 Areas affected...Portions of the Central Appalachians/Blue Ridge Concerning...Heavy rainfall...Flash flooding possible Valid 171735Z - 172335Z SUMMARY...Slow-moving shower activity with heavy rainfall rates will tend to increase in coverage this afternoon across areas of the central Appalachians including parts of the Blue Ridge. This coupled with moist antecedent conditions will promote a threat for some instances of flash flooding. DISCUSSION...A broad mid to upper-level trough over the OH Valley will continue to move gradually off to the northeast today toward the central Appalachians. Some generally weak DPVA/forcing associated with this will be interacting with modest diurnally-enhanced instability and a relatively moist airmass for broken areas of heavy showers. Radar imagery already shows some locally heavy shower activity impacting areas of southeast OH into southwest PA and down through central WV as the leading edge of relatively stronger forcing aloft arrives. Some expansion of this activity with a general increase in rainfall rates can be expected this afternoon as MUCAPE values increase to locally over 1000 J/kg and couple with smaller scale areas of more targeted moisture convergence in vicinity of a quasi-stationary front draped over the higher terrain. Relatively moist southeast flow will also provide a localized orographic component to the rainfall threat with southeast-facing slopes of the central Appalachians and portions of the Blue Ridge seeing pockets of more focused low-level forcing for slow-moving, but heavy shower activity. The rainfall rates should be efficiently high given the overall depth of moisture through the vertical column which was evidenced in 12Z RAOB data across the broader OH Valley this morning in connection to the aforementioned trough. The modest increase in instability will favor some shower activity capable of producing rainfall rates of 1 to 1.5 inches/hour with the stronger cells. Given the overall weak steering flow, and orographic nature of some of the convection, there may be a sufficient level of persistence to the showers to yield some excessive totals. This is being supported by the 12Z HREF guidance which suggests some of the heavier rates focusing over parts of southwest PA through the eastern WV/MD panhandles and northwest VA in vicinity of the Blue Ridge. Some spotty 2 to 3+ inch rainfall totals will be possible by early this evening, and with moist antecedent conditions/lower FFG values in place, some instances of flash flooding will be possible. Orrison ATTN...WFO...CTP...LWX...PBZ...RLX...RNK...
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Meanwhile in Houston
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Needed rain Heading into Saturday, a stronger shortwave moves into the southeast to pick up the stalled warm frontal boundary. Continued shower and thunderstorm activity is expected through day Saturday. Isolated flooding continues to be a concern with repeated rounds of slow moving showers. Around 1-2 inches of rain are expected through the duration of the weekend. Some areas could see closer to 2.5 inches, but confidence on exactly where is low as it depends on where the boundary will be Friday night into Saturday. For now, highest estimates are in portions of the Shenandoah Valley and Virginia Piedmont. Shower and thunderstorm coverage decreases through Saturday evening as the low moves off to the southeast, but rain likely continues into Sunday.
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LWX mentions Wednesday as next chance for some severe storms in the afternoon AFD Fairly potent system approaches the area by Wednesday, with a cold front advanced out ahead of the system. Guidance has been hinting at the opportunity for increased instability ahead of the frontal passage. Could see some thunderstorms develop, with some getting strong to severe. Still a lot of uncertainty with this system with respect to timing and intensity. Highs on Wednesday will be in the upper 70s to low 80s.
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2 EF1s... pretty decent for around here
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It's been 28 years since Twister came to theaters? Wow
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Do northern stream s/w's bring about our better severe weather threats? There was an interesting tidbit at the end of this mornings AFD Upper level ridging tries to build back into the area Sunday into Monday bringing slightly drier conditions. Another front will follow with renewed chances for showers and thunderstorms Tuesday and Wednesday next week. Temperatures will continue to warm back above average during this time leading to the potential for greater instability for thunderstorm activity to feed off of. With a fairly active northern stream will continue to monitor for any severe weather or hydro threats within the extended period. Right now, there is no mention in the Day 4-8 outlook from the Storm Prediction Center.
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