IEM VTEC Product Browser
This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).
13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.
Tab Functionality:
Above this section, you will notice six selectable tabs. Click on
the tab to show the information.
- Help: This page!
- Event Info: Details of the selected event.
- Text Data: The raw text product for this event.
- Interactive Map: An interactive map showing the event and RADAR.
- Storm Reports: Local Storm Reports.
- List Events: List all events of the given phenomena, significance, year, and issuing office.
Web Services Used:
This application is fully driven by IEM web services.
2018 [KLWX] BALTIMORE_MD/_WASHINGTON_DC Marine (MA) Warning (W) Number 17
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
412
WHUS51 KLWX 191423
SMWLWX
ANZ535-536-191630-
/O.NEW.KLWX.MA.W.0017.180419T1423Z-180419T1630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Baltimore MD/Washington DC
1023 AM EDT THU APR 19 2018
The National Weather Service in Sterling Virginia has issued a
* Special Marine Warning for...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
* Until 1230 PM EDT
* At 1022 AM EDT, a cold front was located along a line extending
from 44 nm northwest of Key Bridge to 46 nm northwest of
Alexandria, moving east at 25 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
* Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1422Z 285DEG 23KT 3937 7783 3912 7800
HAIL...0.00in
WIND...>34kts
$$
DHOF694
FZUS71 KLWX 191506
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1106 AM EDT THU APR 19 2018
ANZ535-536-191630-
/O.CON.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1106 AM EDT THU APR 19 2018
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT...
For the following areas...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
At 1105 AM EDT, a gust front was located from near Gaithersburg to
near Dulles Airport, moving east at 25 knots. Several wind gusts of
35 to 40 knots have been measured with this line.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1505Z 285DEG 23KT 3931 7754 3906 7771
HAIL...0.00in
WIND...>34kts
$$
DHOF601
FZUS71 KLWX 191535
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1135 AM EDT THU APR 19 2018
ANZ535-536-191630-
/O.CON.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1135 AM EDT THU APR 19 2018
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT...
For the following areas...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
At 1132 AM EDT, a gust front was moving into the upper tidal Potomac
River, moving east at 25 knots. Numerous wind gusts of 35 to 45
knots have been observed with this line.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a particularly dangerous situation. Sudden onset of gale
force winds can cause even experienced mariners to capsize.
Capsizing in cold water is especially dangerous and can quickly
result in hypothermia. If you haven't already done so, move to safe
harbor now!
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1532Z 285DEG 23KT 3927 7736 3902 7753
HAIL...0.00in
WIND...>34kts
$$
DHOF328
FZUS71 KLWX 191621
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1221 PM EDT THU APR 19 2018
ANZ535-536-191630-
/O.EXP.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1221 PM EDT THU APR 19 2018
...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1230 PM EDT...
The affected areas were...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
The gust front has moved out of the area. A Gale Warning remains in
effect through 8 PM for wind gusts of 34 knots or greater.
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1620Z 285DEG 23KT 3919 7699 3894 7716
$$
DHOFPermalink to 201804191423-KLWX-WHUS51-SMWLWX
412
WHUS51 KLWX 191423
SMWLWX
ANZ535-536-191630-
/O.NEW.KLWX.MA.W.0017.180419T1423Z-180419T1630Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Baltimore MD/Washington DC
1023 AM EDT THU APR 19 2018
The National Weather Service in Sterling Virginia has issued a
* Special Marine Warning for...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
* Until 1230 PM EDT
* At 1022 AM EDT, a cold front was located along a line extending
from 44 nm northwest of Key Bridge to 46 nm northwest of
Alexandria, moving east at 25 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
* Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1422Z 285DEG 23KT 3937 7783 3912 7800
HAIL...0.00in
WIND...>34kts
$$
DHOFPermalink to 201804191506-KLWX-FZUS71-MWSLWX
694
FZUS71 KLWX 191506
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1106 AM EDT THU APR 19 2018
ANZ535-536-191630-
/O.CON.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1106 AM EDT THU APR 19 2018
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT...
For the following areas...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
At 1105 AM EDT, a gust front was located from near Gaithersburg to
near Dulles Airport, moving east at 25 knots. Several wind gusts of
35 to 40 knots have been measured with this line.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1505Z 285DEG 23KT 3931 7754 3906 7771
HAIL...0.00in
WIND...>34kts
$$
DHOFPermalink to 201804191535-KLWX-FZUS71-MWSLWX
601
FZUS71 KLWX 191535
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1135 AM EDT THU APR 19 2018
ANZ535-536-191630-
/O.CON.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1135 AM EDT THU APR 19 2018
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1230 PM EDT...
For the following areas...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
At 1132 AM EDT, a gust front was moving into the upper tidal Potomac
River, moving east at 25 knots. Numerous wind gusts of 35 to 45
knots have been observed with this line.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Observed wind.
IMPACT...Boaters in small craft could be thrown overboard by
suddenly higher winds and waves capsizing their vessel.
Locations impacted include...
Fort Washington...
Tidal Basin...
Reagan National Airport...
Gunston Hall...
Mason Neck State Park...
Woodrow Wilson Bridge...
Indian Head...
Key Bridge...
Fort Hunt...
National Harbor...
and Alexandria.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a particularly dangerous situation. Sudden onset of gale
force winds can cause even experienced mariners to capsize.
Capsizing in cold water is especially dangerous and can quickly
result in hypothermia. If you haven't already done so, move to safe
harbor now!
&&
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1532Z 285DEG 23KT 3927 7736 3902 7753
HAIL...0.00in
WIND...>34kts
$$
DHOFPermalink to 201804191621-KLWX-FZUS71-MWSLWX
328
FZUS71 KLWX 191621
MWSLWX
Marine Weather Statement
National Weather Service Baltimore MD/Washington DC
1221 PM EDT THU APR 19 2018
ANZ535-536-191630-
/O.EXP.KLWX.MA.W.0017.000000T0000Z-180419T1630Z/
1221 PM EDT THU APR 19 2018
...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1230 PM EDT...
The affected areas were...
Tidal Potomac from Indian Head to Cobb Island MD...
Tidal Potomac from Key Bridge to Indian Head MD...
The gust front has moved out of the area. A Gale Warning remains in
effect through 8 PM for wind gusts of 34 knots or greater.
LAT...LON 3867 7724 3866 7722 3866 7719 3864 7720
3864 7719 3865 7716 3870 7720 3873 7706
3890 7708 3891 7705 3885 7700 3870 7700
3867 7708 3862 7709 3859 7714 3864 7726
TIME...MOT...LOC 1620Z 285DEG 23KT 3919 7699 3894 7716
$$
DHOFAll Storm Reports within Event Political Coverage
Storm Reports within Product Polygon
This table lists other events issued by the selected office for the selected year. Click on the row to select that event.