D.C. Heatwave 2013

      Current Temps{} |{} Heat Index{} |{} Local Radar{} |{} 7 Day Forecast


      6:00pm:{} DCA reached 96 again today.{} Not a record, but still hot!{}

      5:06pm: 94F now with a heat index of 98, so it appears the heat is falling just a bit in the late afternoon hours. That's good news to everyone! Tonight, expect low temperatures around 80 degrees in the city and 70s in the outlying suburbs.

      The rest of the week will continue to have temperatures in the mid to upper 90s through Saturday. A disturbance will move into the region Saturday bringing a chance for showers and thunderstorms. A few storms may be strong to severe Saturday. Temperatures should drop back into the 80s by Sunday.

      4:23pm: I have heard of multiple cases of heat exhaustion today even without the Heat Advisory. Here is a good link to the University of Maryland Medical Center{}that{}shows the{}signs and symptoms of heat exhaustion.

      4:06pm: Now it's 94F and feels like 99F at Reagan National. This is the 16th 90F or higher day this year at Reagan National, which is well off the pace compared to the last few years.{}By this date last year, DCA recorded 25 days at or above 90F.

      3:55pm: Code Orange Air Quality is expected tomorrow through Friday in the D.C. area, which means not only will the dangerous heat continue, but the air will also be unhealthy for sensitive groups including children, the elderly and anyone with heart or breathing difficulties.

      3:19pm: I've really slowed down on this live blog since the Heat Advisory has been dropped. Interestingly enough, Heat Index values are above 105F south of D.C., which would mean it reaches the criteria. Right now at Reagan National, it is 95F with a dew point of 68F making for a heat index of 100F.

      2:12pm: The Heat Advisory has been canceled for the D.C. area but heat index values will remain close to 100 degrees across the region. The reason for the cancellation is the fact that dew points are a bit lower around D.C. which means the heat index won't reach the necessary 105F needed for a Heat Advisory. Any cool news is good news to us!

      2:01pm: Now it's 94F with a dew point of 68F, making for a heat index of 99F. I actually wish it was 70F with a dew point in the 40s... guess I'll have to wait a few months!

      1:23pm: It's 93F with a dew point of 70F making the heat index 99F once again at Reagan National as of 1pm.

      1:08pm: Before we complain about it being hot this week... think back to last July. By the 16th, there had already been 12 days at or above 90F, 10 days at or above 95F and 4 days at or above 100F just for the minth!

      July 2012 at Reagan National Airport


      12:51pm: Did you know for the month of July, every day has a record high of 100F or higher besides three days?{} Also, the record high minimum for today is 84F, which is the highest for the month. Our low this morning was 80F, which in 18 other days of the month would have broken or tied the record high minimum for the day. Confused yet?

      12:39pm: Here's a good story about heat exhaustion in children forward along by Tommy McFly. It's a real danger during the summer months, not only today, so please know the signs!

      12:31pm: This picture was taken by Jacob Wycoff yesterday when he entered his car in the afternoon. A good reminder to make sure no one is left inside your car as this heat can kill. It's happened 20 times too many so far this year.

      12:23pm: Be sure to stay on top of this story about the Prince Georges County water outage as it is coming at the worst possible time.

      12:14pm: I'm not opposed to sharing other meteorologists posts, such as this one from our friends at the Capital Weather Gang. Good write-up on the record-tying 500mb heights this weekend!

      This height did fall a bit this morning to 5970m so I agree with Jason that the record heights will continue to fall as the ridge breaks down through the rest of the work week.

      500mb height, temperature and humidity chart from 12z this morning

      12:08pm: As of Noon, it is now a ripe 92F outside with a heat index of 99F. The dew point went down to 70F which is why the heat index has stayed the same. We'll take it during the lunch hour!

      The Heat Advisory continues through 7pm for D.C., Alexandria, Arlington, Flass Church and Baltimore.

      12:06pm: A funny post from our friend TerpWeather on Facebook.

      11:57am: Something interactive is always fun! How about a heat index calculator? You can find it here from the Weather Prediction Center.

      11:48am: It's currently 91 degrees with a dew point of 71, making for a heat index at 99 degrees. This is already shaping up to be a pretty miserable afternoon! Take a look at the HRRR 3km model high temperature forecast for today. Upwards of 99 degrees in spots around the D.C. area! Once again, just a model forecast, but we think upper 90s will be reached in areas today. Thanks to Ryan Maue (@RyanMaue){}of for the share.

      HRRR 3km Model High Temperature Forecast