Eskimo Joe Posted July 28, 2023 Share Posted July 28, 2023 3 minutes ago, katabatic said: 82.7/66.0 out here in the Boonies. DPs hovered in the low 70s all day yesterday; must be better mixing today. Feels warmer than it is. More effective sunshine and it's Day 2. Heat builds each day. 2 Link to comment Share on other sites More sharing options...
weatherCCB Posted July 28, 2023 Share Posted July 28, 2023 93/76/107 Link to comment Share on other sites More sharing options...
katabatic Posted July 28, 2023 Share Posted July 28, 2023 1 minute ago, Eskimo Joe said: More effective sunshine and it's Day 2. Heat builds each day. Very true - tho yesterday was the first time this summer than DPs stayed above 70 for any length of time here. Early next week looks like a slice of incoming heaven so after we get through this proverbial rat in a snake on the charts, not a thing wrong with that forecast. Link to comment Share on other sites More sharing options...
TSSN+ Posted July 28, 2023 Share Posted July 28, 2023 93/75 not pushing the heat. It’s 2 deg cool here at this time over yesterday. Link to comment Share on other sites More sharing options...
Terpeast Posted July 28, 2023 Share Posted July 28, 2023 97/77, HI 112. Wow IAD fell back to 94 at latest obs though 3 Link to comment Share on other sites More sharing options...
TSG Posted July 28, 2023 Share Posted July 28, 2023 2pm - 97/72, HI 106 @ CHO Link to comment Share on other sites More sharing options...
GATECH Posted July 28, 2023 Share Posted July 28, 2023 2:30pm. Temp 98.1, HI 115! dp 79.3! Brutal. Link to comment Share on other sites More sharing options...
CAPE Posted July 28, 2023 Share Posted July 28, 2023 93/76 Sultry Link to comment Share on other sites More sharing options...
WinterWxLuvr Posted July 28, 2023 Share Posted July 28, 2023 This day falls into the official suck category. 1 1 Link to comment Share on other sites More sharing options...
midatlanticweather Posted July 28, 2023 Share Posted July 28, 2023 96/79 measured at 2:15pm was the worst of the day. Heat Index at that time was 114. Yuck. May be a bit high. Link to comment Share on other sites More sharing options...
George BM Posted July 28, 2023 Author Share Posted July 28, 2023 98/72 for the 3pm obs at IAD. 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted July 28, 2023 Share Posted July 28, 2023 Dulles, Leesburg, Westminster, BWI, and the Inner Harbor are going to make a run for 100 degrees. 3 Link to comment Share on other sites More sharing options...
Stormfly Posted July 28, 2023 Share Posted July 28, 2023 Hottest day of the year here so far! 92/74/102 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted July 28, 2023 Share Posted July 28, 2023 12z RAOB from IAD indicated a ConvT of 93 degrees and we're seeing a CU field start to pop now on visible satellite as temps get into the mid 90s. I did a quick look at the 100 degree days in DCA, IAD, and BWI. Looks like you need the ConvT to be at least 95 - 97 degrees for a legit shot at 100 degrees. We probably fall short at DCA today, but Baltimore Inner Harbor and BWI seem like they might make it. Link to comment Share on other sites More sharing options...
Mrs.J Posted July 28, 2023 Share Posted July 28, 2023 3 pm 97.5/ 76.3/ 112.3 Link to comment Share on other sites More sharing options...
RickinBaltimore Posted July 28, 2023 Share Posted July 28, 2023 I don't know the temp out there. It's just brutal hot. Link to comment Share on other sites More sharing options...
WxUSAF Posted July 28, 2023 Share Posted July 28, 2023 27 minutes ago, Eskimo Joe said: Dulles, Leesburg, Westminster, BWI, and the Inner Harbor are going to make a run for 100 degrees. Clouds have dropped my temp to 93-95. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted July 28, 2023 Share Posted July 28, 2023 Afternoon short term update from LWX: Quote AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 254 PM EDT FRI JUL 28 2023 .SYNOPSIS... HIGH PRESSURE OFFSHORE WILL LEAD TO CONTINUED HOT AND HUMID CONDITIONS ACROSS THE REGION. A COLD FRONT WILL PUSH THROUGH SATURDAY WITH HIGH PRESSURE BUILDING IN ITS WAKE THROUGH THE MIDDLE OF THE WEEK. ANOTHER FRONT WILL APPROACH TOWARDS THE END OF NEXT WEEK. && .NEAR TERM /THROUGH TONIGHT/... CONVECTION HAS BEEN SLOWER TO DEVELOP TODAY THAN ORIGINALLY ANTICIPATED GIVEN THE STRONG HEATING AND LITTLE CLOUD COVER, BUT THERE ARE FINALLY SIGNS ON THE CLOUD PHASE DISTINCTION RGB AND LIGHTNINGCAST PROBS THAT CONVECTION WILL GET GOING VERY SOON OVER THE I-81 CORRIDOR FROM MARTINSBURG TO HARRISONBURG VA. EXPECT A FEW ADDITIONAL T-STORMS TO DEVELOP ACROSS THE METROS LATER THIS AFTERNOON AND LAST INTO THE EVENING. LOCALLY DOWNBURST WINDS IS THE MAIN THREAT. ALSO, WATCHING A LINE OF STORMS OVER EASTERN OH WHICH HI-RES MODELS HAVE FAILED TO INITIALIZE WELL. CURRENT RADAR EXTRAPOLATION HAS THAT LINE REACHING THE APPALACHIAN MOUNTAINS BY 630 PM IF NOT SOONER. WHETHER THAT LINE REMAINS SEVERE AS IT CROSSES THE MOUNTAINS IS STILL A BIG UNKNOWN AT THIS TIME. SCATTERED SHOWERS/T-STORMS WILL REMAIN POSSIBLE INTO THE LATE EVENING OR OVERNIGHT GIVEN ALL THE AMPLE MOISTURE. AS FOR THE HEAT, CURRENT TRENDS SUGGEST HEAT INDICES WILL FALL SHORT OF THE HEAT WARNING CRITERIA AND PEAK AROUND 105 EAST OF THE BLUE RIDGE AND 100 WEST OF THERE. Link to comment Share on other sites More sharing options...
Terpeast Posted July 28, 2023 Share Posted July 28, 2023 5 minutes ago, Eskimo Joe said: Afternoon short term update from LWX: Fall short of EHW criteria? According to some obs west of 95 to around route 15, we already reached that. I think the EHW was justified. Nearest reporting 98.8/76.9. HI 115 Link to comment Share on other sites More sharing options...
TSSN+ Posted July 28, 2023 Share Posted July 28, 2023 Toasty Link to comment Share on other sites More sharing options...
MN Transplant Posted July 28, 2023 Share Posted July 28, 2023 43 minutes ago, WinterWxLuvr said: This day falls into the official suck category. We had so many of these kinds of days in 2010-12. Probably as our penance for the 2009-10 winter. 1 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted July 28, 2023 Share Posted July 28, 2023 7 minutes ago, Terpeast said: Fall short of EHW criteria? According to some obs west of 95 to around route 15, we already reached that. I think the EHW was justified. Nearest reporting 98.8/76.9. HI 115 Agreed. I love LWX, never understood why there is always such reticence on the excessive heat warnings. I totally understand the issue with over warning, just seems like they are ultra-conservative with them. 1 Link to comment Share on other sites More sharing options...
H2O Posted July 28, 2023 Share Posted July 28, 2023 Back from the beach. This is gross ass heat. 97/80 HI 118 2 Link to comment Share on other sites More sharing options...
MN Transplant Posted July 28, 2023 Share Posted July 28, 2023 Frequency diagram of max yearly temps at DCA. 98 is the most common. 28/82 years (34%) have reached 100 degrees. However, it is streaky with a couple of 7+ year streaks without 100 degrees in the historical record. 5 Link to comment Share on other sites More sharing options...
MN Transplant Posted July 28, 2023 Share Posted July 28, 2023 4pm obs. 97 at IAD/BWI. 95/76 at DCA on a river wind. 1 Link to comment Share on other sites More sharing options...
Terpeast Posted July 28, 2023 Share Posted July 28, 2023 So far 99.5 is my high. Some stations in the ashburn area have reached 100 1 Link to comment Share on other sites More sharing options...
CAPE Posted July 28, 2023 Share Posted July 28, 2023 Mount Holly afternoon AFD mentions the shortwave and storm chances this evening/overnight- Latest analysis shows a very subtle boundary straddling the Delmarva and southern NJ on a southeast-northwest alignment. This boundary, after pushing south across the region overnight, will move back northeast across the region this evening into tonight. Dew points remain sultry on the south side of this boundary, but to the north, temperatures and dew points are running just a bit shy of expectations, keeping heat indices lower than expected. That said, will retain heat headlines as-is even though it looks like we may be falling short. Aloft, a notable shortwave is over the Appalachians to our west, heading east. This looks to be the trigger for thunderstorms now developing in that general vicinity. Expect these to continue moving generally eastward thru the rest of the afternoon into the evening, possibly crossing a majority of the region, but most likely areas from Philly south and west. They will be feeding on the weak shear with the aforementioned shortwave and the plentiful CAPE (over 2000 j/kg) just south of the aforementioned boundary. This will therefore provide at least a marginal risk of severe weather, so SPC has added these areas to the marginal risk. Will need to watch convection and instability trends closely this evening, as its not out of the question a further ramp-up is eventually needed, but for now am comfortable with current forecast. Shortwave moves on by overnight, but then remnants of developing MCS`s further west may come into play. Lots of uncertainty here, with some guidance showing them holding together late tonight into early Saturday, while others completely dissipate them as they cross the mountains. Thus, have slight chance POPS for most late tonight into Saturday morning. 1 Link to comment Share on other sites More sharing options...
CAPE Posted July 28, 2023 Share Posted July 28, 2023 High here was 93. 88 currently. Very oppressive with the high dewpoints. Link to comment Share on other sites More sharing options...
EastCoast NPZ Posted July 28, 2023 Share Posted July 28, 2023 Perfectly positioned between cells blowing up south of winchester and ones crushing front royal. The tail of the one south of winchester back built just enough as it's leaving to get me .10". It's a joke, but it's the best we've had in a while, and apparently the best we can hope for. Now listening to the thunder booming. Link to comment Share on other sites More sharing options...
ThePhotoGuy Posted July 28, 2023 Share Posted July 28, 2023 Currently 93.3 (high of the day so far) with dew point of 77.5. Heat Index of 107.4. Link to comment Share on other sites More sharing options...
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