Alert archive / Maryland / Flash Flood Warnings in 2016
Flash Flood Warning 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Jun 21, 2016, 2:05 PM EDT for 5 counties in Maryland. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 21, 2016, 2:05 PM EDT (18:05 UTC)
- Expired
- Jun 21, 2016, 6:00 PM EDT
- In force
- 4 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Flood severity
- None
Counties Anne Arundel County, MD, Baltimore County, MD, City of Baltimore, MD, Harford County, MD, Howard County, MD
The radar
The Sterling radar (KLWX), 101 km from the middle of the area, began a volume at 18:05 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 2:45 PM EDT | FLOOD | 2 Nnw Brooklyn Park, MD | RESUCE OF PEOPLE IN STRANDED CAR ON PATAPSCO AVE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.1 hours before the alert went out and 30 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1292 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 1267 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted.
859
WGUS51 KLWX 211805
FFWLWX
MDC003-005-025-027-510-212200-
/O.NEW.KLWX.FF.W.0021.160621T1805Z-160621T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
205 PM EDT TUE JUN 21 2016
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
BALTIMORE COUNTY IN NORTHERN MARYLAND...
NORTH CENTRAL ANNE ARUNDEL COUNTY IN CENTRAL MARYLAND...
NORTHEASTERN HOWARD COUNTY IN CENTRAL MARYLAND...
BALTIMORE CITY IN NORTHERN MARYLAND...
SOUTHERN HARFORD COUNTY IN NORTHERN MARYLAND...
* UNTIL 600 PM EDT
* AT 204 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY
FALLEN. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE
POSSIBLE. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY...ESPECIALLY
IN URBANIZED AREAS.
* SOME LOCATIONS THAT ARE EXPECTED TO EXPERIENCE FLOODING INCLUDE...
BALTIMORE...COLUMBIA...SEVERN...PIKESVILLE...MIDDLE RIVER...
COCKEYSVILLE...ELKRIDGE...ABERDEEN...HAVRE DE GRACE...
RIVIERA BEACH...ABERDEEN PROVING GROUND...BACK RIVER...
MILLERS ISLAND...BALTIMORE-WASHINGTON AIRPORT...
NORTH POINT STATE PARK...GLEN BURNIE...ELLICOTT CITY...DUNDALK...
TOWSON AND BEL AIR SOUTH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3945 7606 3935 7623 3947 7623 3945 7628
3933 7626 3931 7628 3939 7631 3939 7637
3931 7633 3920 7643 3928 7657 3927 7663
3916 7650 3917 7700 3935 7692 3936 7687
3949 7687 3958 7610 3949 7613
$$
JE3 follow-up statements
269
WGUS71 KLWX 211847
FFSLWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
247 PM EDT TUE JUN 21 2016
MDC003-005-025-027-510-212200-
/O.CON.KLWX.FF.W.0021.000000T0000Z-160621T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALTIMORE MD-ANNE ARUNDEL MD-HOWARD MD-BALTIMORE CITY MD-HARFORD MD-
247 PM EDT TUE JUN 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR
BALTIMORE...NORTH CENTRAL ANNE ARUNDEL...NORTHEASTERN HOWARD AND
SOUTHERN HARFORD COUNTIES AND BALTIMORE CITY...
AT 246 PM EDT...DOPPLER RADAR INDICATED HEAVY RAIN HAD FALLEN ACROSS
THE AREA DURING THE LAST COUPLE HOURS. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN ACROSS MUCH OF THE AREA...WITH UP TO THREE INCHES
BETWEEN BALTIMORE AND TOWSON. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY...IF IT HAS NOT DONE SO ALREADY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BALTIMORE...COLUMBIA...SEVERN...PIKESVILLE...MIDDLE RIVER...
ELKRIDGE...ABERDEEN...HAVRE DE GRACE...RIVIERA BEACH...
ABERDEEN PROVING GROUND...BALTIMORE-WASHINGTON AIRPORT...
BACK RIVER...NORTH POINT STATE PARK...MILLERS ISLAND...GLEN BURNIE...
ELLICOTT CITY...DUNDALK...TOWSON...BEL AIR SOUTH AND CATONSVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 3945 7606 3935 7623 3947 7623 3945 7628
3933 7626 3931 7628 3939 7631 3939 7637
3931 7633 3920 7643 3928 7657 3927 7663
3916 7650 3917 7700 3935 7692 3936 7687
3942 7687 3948 7642 3958 7610 3949 7613
$$
JE980
WGUS71 KLWX 211943
FFSLWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
343 PM EDT TUE JUN 21 2016
MDC025-211951-
/O.CAN.KLWX.FF.W.0021.000000T0000Z-160621T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARFORD MD-
343 PM EDT TUE JUN 21 2016
...THE FLASH FLOOD WARNING FOR SOUTHERN HARFORD COUNTY IS
CANCELLED...
LAT...LON 3946 7639 3940 7636 3938 7637 3931 7633
3929 7639 3925 7640 3925 7639 3920 7643
3928 7657 3929 7661 3927 7663 3923 7658
3921 7659 3922 7657 3916 7650 3917 7700
3935 7692 3936 7687 3942 7687 3948 7642
$$
MDC003-005-027-510-212200-
/O.CON.KLWX.FF.W.0021.000000T0000Z-160621T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALTIMORE MD-ANNE ARUNDEL MD-HOWARD MD-BALTIMORE CITY MD-
343 PM EDT TUE JUN 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR
BALTIMORE...NORTH CENTRAL ANNE ARUNDEL...AND NORTHEASTERN HOWARD
COUNTIES AND BALTIMORE CITY...
AT 341 PM EDT...DOPPLER RADAR INDICATED UP TO TWO INCHES OF RAIN
FELL EARLIER IN A VERY SHORT PERIOD OF TIME. THIS CAUSED SHARP RISES
ON AREA SMALL STREAMS. RAIN HAS NOW ENDED...AND WATER LEVELS ARE
LIKELY TO RECEDE THROUGH LATE AFTERNOON.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BALTIMORE...COLUMBIA...SEVERN...PIKESVILLE...MIDDLE RIVER...
ELKRIDGE...RIVIERA BEACH...BALTIMORE-WASHINGTON AIRPORT...
BACK RIVER...NORTH POINT STATE PARK...MILLERS ISLAND...GLEN BURNIE...
ELLICOTT CITY...DUNDALK...TOWSON...CATONSVILLE...ESSEX...WOODLAWN...
RANDALLSTOWN AND PARKVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 3946 7639 3940 7636 3938 7637 3931 7633
3929 7639 3925 7640 3925 7639 3920 7643
3928 7657 3929 7661 3927 7663 3923 7658
3921 7659 3922 7657 3916 7650 3917 7700
3935 7692 3936 7687 3942 7687 3948 7642
$$
JE362
WGUS71 KLWX 212011
FFSLWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
411 PM EDT TUE JUN 21 2016
MDC003-005-027-510-212021-
/O.CAN.KLWX.FF.W.0021.000000T0000Z-160621T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BALTIMORE MD-ANNE ARUNDEL MD-HOWARD MD-BALTIMORE CITY MD-
411 PM EDT TUE JUN 21 2016
...THE FLASH FLOOD WARNING FOR BALTIMORE...NORTH CENTRAL ANNE
ARUNDEL...AND NORTHEASTERN HOWARD COUNTIES AND BALTIMORE CITY IS
CANCELLED...
FLOOD WATERS HAVE RECEDED AND NO LONGER POSE A THREAT TO LIFE OR
PROPERTY. BE ALERT FOR REMAINING STANDING WATER AND CONTINUE TO
FOLLOW ROAD CLOSURES.
LAT...LON 3946 7639 3940 7636 3938 7637 3931 7633
3929 7639 3925 7640 3925 7639 3920 7643
3928 7657 3929 7661 3927 7663 3923 7658
3921 7659 3922 7657 3916 7650 3917 7700
3935 7692 3936 7687 3942 7687 3948 7642
$$
JEThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 12:01 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 44 min |
| Jun 21, 12:39 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 36 min |
| Jun 21, 12:47 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 27 min |
| Jun 21, 12:50 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 40 min |
| Jun 21, 1:01 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery, Washington | 31 min |
| Jun 21, 1:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Howard, Montgomery and 2 more | 56 min |
| Jun 21, 1:23 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 52 min |
| Jun 21, 1:34 PM EDT | Tornado Warning | LWX | Baltimore, Howard | 26 min |
| Jun 21, 1:51 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 39 min |
| Jun 21, 2:08 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 52 min |
| Jun 21, 2:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 32 min |
| Jun 21, 2:20 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 36 min |
| Jun 21, 2:28 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 3 hr |
| Jun 21, 2:53 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Howard, Prince George's | 6 hr |
| Jun 21, 3:11 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Montgomery, Prince George's | 49 min |
| Jun 21, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 22 min |
| Jun 21, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 60 min |
| Jun 21, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 36 min |
| Jun 21, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 48 min |
| Jun 21, 5:17 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 43 min |
| Jun 21, 5:51 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Jun 21, 6:06 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Jun 21, 6:31 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 44 min |
| Jun 21, 7:09 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 51 min |
| Jun 21, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 44 min |
| Jun 21, 7:51 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 11 min |
Nearby
Flash Flood Warnings in Maryland, 2016Every flash flood warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.