Ian Posted July 8, 2012 Share Posted July 8, 2012 oh man scuddz mentioned "probably not a derecho" im about to hunt you down Link to comment Share on other sites More sharing options...
TUweathermanDD Posted July 8, 2012 Share Posted July 8, 2012 Few more hours and think we'd have a decent severe threat, but looks like front is already down to about BWI (east wind?) No I dont think it is, my friend n of HGR is at 91. Link to comment Share on other sites More sharing options...
Kmlwx Posted July 8, 2012 Share Posted July 8, 2012 No I dont think it is, my friend n of HGR is at 91. Cooler air will probably lag behind. What is his wind direction and dewpoint? Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 99. we better make it! Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 the front is pretty diffuse. dews are still rather high north of it in pa. Link to comment Share on other sites More sharing options...
MN Transplant Posted July 8, 2012 Share Posted July 8, 2012 DCA: 99/71 IAD: 97/71 BWI: 93/71 me: 94.8 Link to comment Share on other sites More sharing options...
MN Transplant Posted July 8, 2012 Share Posted July 8, 2012 we need your old thread on our DC top 10 so we can rank Derechogate/Heatwave Weird. I can't find it. Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 99. we better make it! We should make 100 today.. def higher than mid 90s which was forecast in the 1030 zones from LWX DCA should hit 100 at 1... CHO/EZF 100 at noon btw Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 I think I see our first storm popping up just inside PA just north of Washington County in NW MD Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 I think I see our first storm popping up just inside PA just north of Washington County in NW MD That's good news it's pretty far north. I have no clue where the front is. Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 That's good news it's pretty far north. I have no clue where the front is. It is a good sign... no ideawherethe front is with it bein so diffuse. 1630 SPC is same... mentions 12z KIAD RAOB shows steep lapse rates ~600mb and below... and MLCAPE of 3500 to 4000 possible as temps reach 100 to 105 Link to comment Share on other sites More sharing options...
eurojosh Posted July 8, 2012 Share Posted July 8, 2012 Idea for our next competition - how many days until our next 100 degree day... Link to comment Share on other sites More sharing options...
North Balti Zen Posted July 8, 2012 Share Posted July 8, 2012 If we don't get good storms I'll feel like the heat wave was a complete waste. Um, the ones a week ago Friday were kinda noteworthy... Link to comment Share on other sites More sharing options...
Stormpc Posted July 8, 2012 Share Posted July 8, 2012 With the high DP, it presently feels much worse today than yesterday. My high temp at home yesterday was 104.4. Already at 101.6 but a DP of 71 compared to yesterdays being in the high 50's at peak heating. Good CU field developing also in the last 30 mins. We just need rain, badly. Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 If you wish to believe the 1600z SPC meso - 3000+ MLCAPE and SBCAPE, DCAPE 1400 to 1600 east of Blue Ridge... sup composite of 4 in S PA/N MD along wth 8 left moving sup composite in same place Link to comment Share on other sites More sharing options...
Fozz Posted July 8, 2012 Share Posted July 8, 2012 Left DC at 11 and now I'm back home. Temp went from 98 to 89 Link to comment Share on other sites More sharing options...
snowfan Posted July 8, 2012 Share Posted July 8, 2012 Um, the ones a week ago Friday were kinda noteworthy... I should clarify....with the most recent run of 100+ days. Link to comment Share on other sites More sharing options...
CapitalClimate Posted July 8, 2012 Share Posted July 8, 2012 WTF? KPTB 106? KPTB 081635Z AUTO 31003KT 7SM CLR 41/17 A2986 RMK AO2 KFVX, KRIC, KEZF, KAVC, KCHO, KRMN all 100+ Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 i never knew measuring temperature was so complicated.. almost as hard as measuring snow. Link to comment Share on other sites More sharing options...
snowfan Posted July 8, 2012 Share Posted July 8, 2012 Idea for our next competition - how many days until our next 100 degree day... Could be awhile if you believe the loltastic 25 day accuweather forecast. Link to comment Share on other sites More sharing options...
mattmfm Posted July 8, 2012 Share Posted July 8, 2012 MESOSCALE DISCUSSION 1433 NWS STORM PREDICTION CENTER NORMAN OK 1147 AM CDT SUN JUL 08 2012 AREAS AFFECTED...FAR ERN WV...CNTRL/NRN VA...MUCH OF MD/DE CONCERNING...SEVERE POTENTIAL...WATCH LIKELY VALID 081647Z - 081815Z PROBABILITY OF WATCH ISSUANCE...80 PERCENT SUMMARY...THUNDERSTORMS ARE FORECAST TO DEVELOP AND INCREASE IN COVERAGE THIS AFTERNOON ACROSS FAR ERN WV INTO CNTRL/NRN VA AND MUCH OF MD/DE. THIS ACTIVITY WILL POSE A THREAT FOR DAMAGING WIND GUSTS AND LARGE HAIL. WW WILL LIKELY BE NEEDED. DISCUSSION...MID-DAY MESOANALYSIS SHOWS A COLD FRONT SAGGING SWD ACROSS FAR SRN PA...WHILE S OF THE FRONT...CLEAR SKIES HAVE ALLOWED TEMPERATURES TO QUICKLY WARM INTO 90S TO AROUND 100F. THE HOT SURFACE AIRMASS HAS AIDED IN STRONG BOUNDARY LAYER DESTABILIZATION...WHILE EML PLUME EMANATING OUT OF THE WRN CONUS...COMBINED WITH SURFACE DEWPOINTS IN THE MID 60S TO LOW 70S...IS CONTRIBUTING TO SBCAPE VALUES AOA 2000 J/KG. AS A RESULT...AN ISOLATED THUNDERSTORM HAS RECENTLY DEVELOPED ALONG THE FRONT OVER FAR S-CNTRL PA...WHILE CUMULUS FIELD OBSERVED IN VIS IMAGERY IS DEEPENING OVER ERN WV/NRN VA. EXPECT THAT BOTH THE FRONT AND CUMULUS FIELD WILL BE FAVORED AREAS FOR ADDITIONAL STORM DEVELOPMENT DURING THE NEXT FEW HRS. THOUGH THE REGION RESIDES S OF STRONGER MIDLEVEL WLYS...DEEP-LAYER WLY FLOW ACROSS THE WARM SECTOR WILL YIELD 20-30 KT 0-6 KM BULK SHEAR...WHICH WILL BE SUFFICIENT FOR STRONG/SVR MULTICELL CLUSTERS AND LINE SEGMENTS GIVEN THE HOT/UNSTABLE AIRMASS. THESE STORMS WILL POSE A THREAT FOR DAMAGING WINDS AND LARGE HAIL...AND A WW WILL LIKELY BE NEEDED FOR PART OF THE MCD AREA. ..GARNER/WEISS.. 07/08/2012 ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX... Link to comment Share on other sites More sharing options...
mattmfm Posted July 8, 2012 Share Posted July 8, 2012 i never knew measuring temperature was so complicated.. almost as hard as measuring snow. CWG needs to do some digging into this 3 minutes nonsense. Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 CWG needs to do some digging into this 3 minutes nonsense. I have... and I can't fin anything as of yet... zwyts or MN_Transplant... know anything about that? Link to comment Share on other sites More sharing options...
MN Transplant Posted July 8, 2012 Share Posted July 8, 2012 Still 99 at DCA. Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 CWG needs to do some digging into this 3 minutes nonsense. someone posted this last night there jimmyjohn1 7/7/2012 6:51 PM EDT The observer was not quite correct. The temperature is averaged over each minute. Then, the five-minute average temperature is calculated from the five one-minute averages. The five-minute average temperature is what's recorded. It's a little more complicated than this, but that sums it up. You can read about the weather algorithms in the ASOS User's Guide (go to page 11 for temperature/dew point) at http://www.nws.noaa.gov/asos/aum-toc.pdf Before the National Weather Service used ASOS, I believe the minimum and maximum temperatures were from instantaneous temperatures, but I could be wrong. Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 of course their method begs the question as to whether any home stations or people reading thermometers are correct with reported highs. not sure why it has to be so complicated but i guess it helps cancel out jet blasts. Link to comment Share on other sites More sharing options...
yoda Posted July 8, 2012 Share Posted July 8, 2012 of course their method begs the question as to whether any home stations or people reading thermometers are correct with reported highs. not sure why it has to be so complicated but i guess it helps cancel out jet blasts. I guess so... but I think we would know if the temp went 104 to 120 to 104 Link to comment Share on other sites More sharing options...
mattmfm Posted July 8, 2012 Share Posted July 8, 2012 someone posted this last night there jimmyjohn1 7/7/2012 6:51 PM EDT The observer was not quite correct. The temperature is averaged over each minute. Then, the five-minute average temperature is calculated from the five one-minute averages. The five-minute average temperature is what's recorded. It's a little more complicated than this, but that sums it up. You can read about the weather algorithms in the ASOS User's Guide (go to page 11 for temperature/dew point) at http://www.nws.noaa....sos/aum-toc.pdf Before the National Weather Service used ASOS, I believe the minimum and maximum temperatures were from instantaneous temperatures, but I could be wrong. But in that case the previous record was measured incorrectly...and should be noted in the climate reports. Link to comment Share on other sites More sharing options...
Ian Posted July 8, 2012 Share Posted July 8, 2012 But in that case the previous record was measured incorrectly...and should be noted in the climate reports. I've already thrown out the 106's in my head. I don't believe them. Then again at least it wasn't so complicated. Link to comment Share on other sites More sharing options...
MN Transplant Posted July 8, 2012 Share Posted July 8, 2012 But in that case the previous record was measured incorrectly...and should be noted in the climate reports. Well, the question is whether a mercury thermometer would even allow a temporary 1 minute jump in temperature to be recorded. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.