Wednesday, April 7, 2010

PM Update: DC Demolishes 80-Plus-Year April Heat Record

April 8, Midnight update: The midnight (1 am, EDT) lows:
Washington National 56°
Washington Dulles 56°
Baltimore/BWI 55°
April 8, AM Update: This morning's low of 69° is 9° above the record warm minimum for April 8. In the unlikely event that this reading were to hold through the approach of a strong cold front this evening, it would tie the all-time April warm minimum on April 19, 1896.

Dulles Airport has already tied 1 and set 2 record warm minimums in the last 3 days:
April 5 51 (tie)
April 6 61
April 7 65
This morning's low of 67° is 14° above the current record of 53° set in 1983 and is 1° above the all-time April record warm minimum of 66° in 1977.

5 PM Update: Today's high of 90° brings the average for the first week of April up to 67.6°, over 4° above the old record. Other highs, including a new record by 7° at Dulles:
Washington Dulles   91° 
Baltimore/BWI 90°
2 PM Update: As of 2:00, the highs are (new record at Dulles):
Washington National 88°
Washington Dulles 89°
Baltimore/BWI 88°
Original post:
Following a low of 63°, the Washington, DC noon temperature is now up to 79°. This clinches a record high average temperature for the first week of April since at least 1930, when records began at or near the current location of National Airport. With an expected high in the upper 80s, the average for April 1-7 will be close to a remarkable 4° above the previous record in 1981.

For previous history, see the earlier post below.

No comments:

Seasonal Outlook

Latest seasonal forecast: Click here.

Latest 3-month temperature outlook from Climate Prediction Center/NWS/NOAA.