Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Location	Sky/Weather	Temp. (°F)	Dewpt. (°F)	Humidity (%)	Wind (mph)	Pressure (in)	Remarks
Washington National	Thunderstorm	73	65	75	N7	30.07F
Dulles Intl.	Cloudy	70	68	93	NW5	30.08R
BWI Airport	Thunderstorm	71	68	90	VRB3	30.07R	Fog
Baltimore/Inner Harbor, MD	Missing	73	69	87	MISG	30.08R
Charlottesville, VA	Mostly Cloudy	71	66	84	N6	30.10R
Fredericksburg, VA	Mostly Cloudy	76	63	63	CALM	30.07R
Staunton, VA	HVYRAIN	67	67	100	CALM	30.15R
Winchester, VA	Cloudy	68	68	100	SW3	30.11R
Annapolis, MD	Mostly Cloudy	72	68	87	CALM	30.08R
Hagerstown Airport, MD	Mostly Cloudy	72	65	78	N6	30.09S
Baltimore/Martin, MD	Rain	72	70	93	CALM	30.09S
Martinsburg, WV	Light Rain	72	66	81	N7	30.08R
Petersburg, WV	Mostly Cloudy	71	63	76	CALM	30.09R
Patuxent River, MD	Mostly Cloudy	76	66	71	N9	30.06R
Cumberland, MD	Cloudy	69	62	78	N13	30.14F
Oakland, MD	Fog	61	61	100	VRB5	30.17S	VSB<1/4

Hourly observations from: 1100 PM EDT WED MAY 20 2026

NZUS51 KLWX 210310
HRRLWX

HOURLY OBSERVATIONS AROUND THE LWX CWA
1100 PM EDT WED MAY 20 2026

Note: "FAIR" indicates few or no clouds below 12,000 feet
with no significant weather and/or obstructions to visibility.

 * =Non NWS site. Station does not report significant weather 
    and/or obstructions to visibility.

...DOWNTOWN AREAS...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
WASHINGTON NAT TSTM      73  65  75 N7        30.07F                  
BALT INNER HAR   N/A     73  69  87 MISG      30.08R                  


...WASHINGTON SUBURBS...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
DULLES         CLOUDY    70  68  93 NW5       30.08R                  
MANASSAS*      LGT RAIN  70  68  93 NW6       30.09S                  
LEESBURG*      LGT RAIN  70  70 100 CALM      30.11R                  
GAITHERSBURG*  CLOUDY    69 N/A N/A S8        30.11R                  
FT BELVOIR     MOCLDY    74  65  71 CALM      30.04S                  
ANDREWS AFB    MOCLDY    73  64  74 N7        30.07R                  
COLLEGE PARK*  RAIN      71  67  87 N12       30.06S                  

...CENTRAL VIRGINIA...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CULPEPER*      LGT RAIN  70  67  92 CALM      30.10R                  
CHARLOTTESVILL MOCLDY    71  66  84 N6        30.10R                  
WARRENTON*     LGT RAIN  70  67  90 SW3       30.10R                  
ORANGE*        MOCLDY    70  64  83 CALM      30.09F                  
FREDERICKSBRG* MOCLDY    76  63  63 CALM      30.07R                  
LOUISA*        MOCLDY    73  63  71 NE5       30.10R                  
ASHLAND        CLEAR     77  62  59 VRB3      30.07R                  
RICHMOND       PTCLDY    80  62  54 S3        30.03R                  

...NORTHEAST/CENTRAL MARYLAND...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
BWI AIRPORT    TSTM      71  68  90 VRB3      30.07R FOG              
ANNAPOLIS      MOCLDY    72  68  87 CALM      30.08R                  
MARTIN AIRPORT RAIN      72  70  93 CALM      30.09S                  
WESTMINSTER*   CLOUDY    72  72 100 CALM      30.10S                  
FREDERICK*     LGT RAIN  70  70 100 SW3       30.10R                  
FORT MEADE*    CLOUDY    70  68  94 SW7       30.13R                  

...SOUTHERN MARYLAND...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PATUXENT RIVER MOCLDY    76  66  71 N9        30.06R                  
ST MARYS CITY  PTCLDY    75  66  73 CALM      30.04R                  

...MARYLAND EASTERN SHORE...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
SALISBURY      CLEAR     75  64  68 E3        30.05R                  
CAMBRIDGE*     CLOUDY    73  66  78 CALM      30.06R                  
OCEAN CITY     PTCLDY    73  68  84 MISG      30.06S                  
BAY BRIDGE AP* MOCLDY   N/A N/A N/A CALM      30.08R                  
EASTON*        MOCLDY    73  67  80 NW3       30.07R                  

...SHENANDOAH VALLEY...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
MARTINSBURG    LGT RAIN  72  66  81 N7        30.08R                  
HAGERSTOWN APT MOCLDY    72  65  78 N6        30.09S                  
STAUNTON*      HVY RAIN  67  67 100 CALM      30.15R                  
WINCHESTER*    CLOUDY    68  68 100 SW3       30.11R                  
NEW MARKET*    CLOUDY   N/A N/A N/A CALM      30.10S                  
WAYNESBORO*    CLOUDY    67  67  99 CALM      30.12S                  

...APPALACHIANS...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PETERSBURG WV* MOCLDY    71  63  76 CALM      30.09R                  
CUMBERLAND*    CLOUDY    69  62  78 N13       30.14F                  
OAKLAND*       FOG       61  61 100 VRB5      30.17S VSB<1/4          
HOT SPRINGS*   CLOUDY    68  59  72 W8        30.22S                  
ELKINS         MOCLDY    63  63 100 CALM      30.16R                  
BEDFORD PA*    CLOUDY    62  58  84 CALM      30.15R                  
JOHNSTOWN      CLOUDY    55  54  96 NW6       30.18R                  
ALTOONA        CLOUDY    60  56  86 NW12      30.16R                  

...SOUTHERN PENNSYLVANIA/DELAWARE...
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
YORK           CLOUDY    70  66  87 N5        30.10R                  
WILMINGTON     MOCLDY    71  68  90 N5        30.06R                  

...MARINE OBSERVATIONS...
  
STATION/POSITION TIME  TEMP    WIND        PRES
                       AIR SEA DIR/SP/G
                 (UTC) (F)     (DEG/KT/KT) (MB)
THOMAS PT LIGHT  0300   73     330/  3/  5 1020.0R
TOLCHESTER       0230   70 74  110/  2/  4 1018.3R
COVE POINT       0230   71     330/  8/ 11 1018.8R
GOOSES REEF      0248   67 69   10/  8/ 10   N/A
BALT HARBOR      0230   73 75  310/  5/  8   N/A
BALT KEY BRIDGE  0230   72     300/  4/  5 1018.3R
ANNAPOLIS USNA   0230   73 72  340/  4/  4 1017.8R
ANNAPOLIS CBIBS  0248   70 69  350/  2/  4   N/A
WASH DC CHANNEL  0230   75 74  360/  4/ 12 1017.6R
DAHLGREN         0230   75 77   CALM  /  1 1017.6R
LEWISETTA        0230   77 78  320/  6/  7 1017.0R
SOLOMONS ISLAND  0230   75 70   10/  5/  5 1017.5R
PINEY POINT      0230          340/  8/  9   N/A
POTOMAC BUOY     0248   71 67  300/  8/ 10   N/A
CAMBRIDGE PIER   0230   75 73  140/  2/  3 1018.1R
BISHOPS HEAD     0230   77 79   90/  4/  6 1017.3R
CHESAPEAKE CITY  0230   71 75   CALM  /  5 1017.9R

For past hours' observations from around the NWS Sterling Area, please visit:
https://forecast.weather.gov/product.php?site=LWX&issuedby=LWX&product=RWR&format=CI&version=1

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