Alert archive / Maryland / River Flood Warnings in 2011
River Flood Warning 178, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Sep 7, 2011, 4:40 PM EDT for Cecil County, Harford County, Maryland. It took effect at Sep 7, 2011, 9:15 PM EDT. It was in force for 4 days.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2011, 4:40 PM EDT (20:40 UTC)
- In effect from
- Sep 7, 2011, 9:15 PM EDT
- Expired
- Sep 12, 2011, 3:33 AM EDT
- In force
- 4 days
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- Major
Counties Cecil County, MD, Harford County, MD
The radar
The Dover AFB radar (KDOX), 100 km from the middle of the area, began a volume at 20:40 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.
The river
Written for the forecast point Susquehanna River at Conowingo Dam (CNWM2). The gauge peaked at 32.40 ft at Sep 9, 2011, 6:00 AM EDT.
- Action stage
- 21.5 ft
- Minor stage
- 23.5 ft
- Moderate stage
- 24.8 ft
- Major stage
- 28.5 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01578310, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted, in the capitals the NWS used until 2016.
429
WGUS41 KPHI 072040
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
440 PM EDT WED SEP 7 2011
...THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A FLOOD
WARNING FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-080240-
/O.NEW.KPHI.FL.W.0178.110908T2340Z-000000T0000Z/
/CNWM2.3.ER.110908T2340Z.110910T1200Z.000000T0000Z.NO/
440 PM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* FROM THURSDAY EVENING UNTIL FURTHER NOTICE...OR UNTIL THE WARNING IS
CANCELLED.
* AT 3:30 PM WEDNESDAY THE STAGE WAS 17.4 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY TOMORROW EVENING AND CONTINUE TO
RISE TO NEAR 31.4 FEET BY SATURDAY MORNING.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM. MANDATORY EVACUATIONS INITIATED IN PORT DEPOSIT.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 17.37 WED 3 PM 31.4 SAT 8 AM
&&18 follow-up statements
869
WGUS81 KPHI 072050
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
450 PM EDT WED SEP 7 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-080650-
/O.EXT.KPHI.FL.W.0178.110908T0115Z-000000T0000Z/
/CNWM2.3.ER.110908T0115Z.110910T1200Z.000000T0000Z.NO/
450 PM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* FROM THIS EVENING UNTIL FURTHER NOTICE.
* AT 4:30 PM WEDNESDAY THE STAGE WAS 22.9 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CONTINUE TO RISE TO
NEAR 31.4 FEET BY SATURDAY MORNING.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 22.86 WED 4 PM 31.4 SAT 8 AM
&&740
WGUS81 KPHI 080151
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
951 PM EDT WED SEP 7 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-081151-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1800Z.000000T0000Z.NO/
951 PM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 9:30 PM WEDNESDAY THE STAGE WAS 23.1 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY AFTER MIDNIGHT TONIGHT AND
CONTINUE TO RISE TO NEAR 31.5 FEET BY SATURDAY EARLY AFTERNOON.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 23.14 WED 9 PM 31.5 SAT 2 PM
&&705
WGUS81 KPHI 080844
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
444 AM EDT THU SEP 8 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-081844-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1700Z.000000T0000Z.NO/
444 AM EDT THU SEP 8 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 3:30 AM THURSDAY THE STAGE WAS 25.3 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MODERATE FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 35.8 FEET BY
SATURDAY EARLY AFTERNOON THEN BEGIN FALLING.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 25.34 THU 3 AM 35.8 SAT 1 PM
&&953
WGUS81 KPHI 081458
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1058 AM EDT THU SEP 8 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-090058-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1200Z.000000T0000Z.NO/
1058 AM EDT THU SEP 8 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 10:30 AM THURSDAY THE STAGE WAS 30.0 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 35.8 FEET BY
SATURDAY MORNING THEN BEGIN FALLING.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 30.01 THU 10 AM 35.8 SAT 8 AM
&&134
WGUS81 KPHI 081859
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
259 PM EDT THU SEP 8 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-090459-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1200Z.000000T0000Z.NO/
259 PM EDT THU SEP 8 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 2:30 PM THURSDAY THE STAGE WAS 30.1 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 35.7 FEET BY
SATURDAY MORNING THEN BEGIN FALLING.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 30.11 THU 2 PM 35.7 SAT 8 AM
&&747
WGUS81 KPHI 090123
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
923 PM EDT THU SEP 8 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-091123-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1800Z.000000T0000Z.NO/
923 PM EDT THU SEP 8 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 8:30 PM THURSDAY THE STAGE WAS 32.1 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 33.4 FEET BY
SATURDAY EARLY AFTERNOON THEN BEGIN FALLING.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 32.12 THU 8 PM 33.4 SAT 2 PM
&&163
WGUS81 KPHI 090807
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
407 AM EDT FRI SEP 9 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-091807-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110910T1800Z.000000T0000Z.NO/
407 AM EDT FRI SEP 9 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 3:30 AM FRIDAY THE STAGE WAS 32.3 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 33.4 FEET BY EARLY
TOMORROW AFTERNOON THEN BEGIN FALLING.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 32.27 FRI 3 AM 33.4 SAT 2 PM
&&023
WGUS81 KPHI 091411
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1010 AM EDT FRI SEP 9 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-100010-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
1010 AM EDT FRI SEP 9 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 9:30 AM FRIDAY THE STAGE WAS 32.4 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL REMAIN IN MAJOR FLOOD THROUGH TONIGHT THEN
BEGIN FALLING.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 32.36 FRI 9 AM MAJOR FLOODING THROUGH TONIGHT
&&402
WGUS81 KPHI 091955
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
355 PM EDT FRI SEP 9 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-100555-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
355 PM EDT FRI SEP 9 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 3:30 PM FRIDAY THE STAGE WAS 31.5 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE TO FALL.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 31.48 FRI 3 PM CRESTED
&&688
WGUS81 KPHI 100202
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1002 PM EDT FRI SEP 9 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-101202-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
1002 PM EDT FRI SEP 9 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 9:30 PM FRIDAY THE STAGE WAS 30.2 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MAJOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE FALLING SLOWLY.
* IMPACT...AT 31.0 FEET...NOTIFICATION LEVEL 9 WITH 43 TO 53 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 30.25 FRI 9 PM ALREADY CRESTED AND FALLING.
&&352
WGUS81 KPHI 100922
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
522 AM EDT SAT SEP 10 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-101922-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
522 AM EDT SAT SEP 10 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 4:30 AM SATURDAY THE STAGE WAS 28.2 FEET.
* FLOOD STAGE IS 23.5 FEET.
* MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE FALLING SLOWLY. UPSTREAM DAM OPERATIONS
MAY CAUSE THE RIVER TO FALL UNSTEADILY.
* IMPACT...AT 28.5 FEET...NOTIFICATION LEVEL 7 WITH 33 TO 35 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 28.21 SAT 4 AM FALLING
&&067
WGUS81 KPHI 101855
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
255 PM EDT SAT SEP 10 2011
...THE FLOOD WARNING CONTINUES FOR THE SUSQUEHANNA RIVER BELOW THE
CONOWINGO DAM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK IT IS.
&&
MDC015-025-110455-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
255 PM EDT SAT SEP 10 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA RIVER BELOW THE CONOWINGO DAM.
* AT 2:30 PM...THE STAGE WAS 27.9 FEET AND RISING SLOWLY.
* FLOOD STAGE IS 23.5 FEET.
* A SLOW BUT UNSTEADY OVERALL DECREASE IN THE RIVER LEVEL IS
ANTICIPATED OVER THE COMING DAYS.
* IMPACT...AT 28.5 FEET...NOTIFICATION LEVEL 7 WITH 33 TO 35 GATES
OPEN AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 27.90 SAT 200 PM CRESTED
&&
IOVINO202
WGUS81 KPHI 110119
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
919 PM EDT SAT SEP 10 2011
...THE FLOOD WARNING CONTINUES FOR THE SUSQUEHANNA RIVER BELOW
THE CONOWINGO DAM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS.
THE WATER MAY BE DEEPER THAN YOU THINK IT IS.
&&
MDC015-025-111119-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
919 PM EDT SAT SEP 10 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW THE CONOWINGO DAM.
* AT 8:30 PM SATURDAY THE STAGE WAS 27.96 FEET.
* FLOOD STAGE IS 23.5 FEET.
* A SLOW BUT UNSTEADY OVERALL DECREASE IN THE RIVER LEVEL IS
ANTICIPATED. THE RIVER SHOULD FALL BACK BELOW FLOOD STAGE ON
MONDAY.
* IMPACT...AT 26.3 FEET...NOTIFICATION LEVEL 6 WITH 26 TO 32 GATES
OPEN AT THE CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 27.96 SAT 830 PM CRESTED
&&
IOVINO360
WGUS81 KPHI 110806
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
406 AM EDT SUN SEP 11 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-111806-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
406 AM EDT SUN SEP 11 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 3:30 AM SUNDAY THE STAGE WAS 26.1 FEET.
* FLOOD STAGE IS 23.5 FEET.
* A SLOW BUT UNSTEADY DECREASE IN THE RIVER LEVEL IS ANTICIPATED.
THE RIVER SHOULD FALL BELOW FLOOD STAGE ON MONDAY.
* IMPACT...AT 26.3 FEET...NOTIFICATION LEVEL 6 WITH 26 TO 32 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 26.11 SUN 3 AM CRESTED AND FALLING
&&515
WGUS81 KPHI 111359
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
959 AM EDT SUN SEP 11 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-120159-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
959 AM EDT SUN SEP 11 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 9:30 AM SUNDAY THE STAGE WAS 25.6 FEET.
* FLOOD STAGE IS 23.5 FEET.
* IMPACT...AT 26.3 FEET...NOTIFICATION LEVEL 6 WITH 26 TO 32 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 25.58 SUN 9 AM crested and falling
&&249
WGUS81 KPHI 112227
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
627 PM EDT SUN SEP 11 2011
...THE FLOOD WARNING CONTINUES FOR THE SUSQUEHANNA RIVER BELOW THE
CONOWINGO DAM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK IT IS.
&&
MDC015-025-120827-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
627 PM EDT SUN SEP 11 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA RIVER BELOW THE CONOWINGO DAM.
* AT 5:30 PM...THE STAGE WAS 24.26 FEET AND FALLING.
* FLOOD STAGE IS 23.5 FEET.
* FORECAST...THE RIVER LEVEL SHOULD CONTINUE TO FALL UNSTEADILY
AND IT IS EXPECTED TO RETURN BACK BELOW FLOOD STAGE ON MONDAY.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 24.26 SUN 530 PM CRESTED
&&
IOVINO276
WGUS81 KPHI 120138
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
938 PM EDT SUN SEP 11 2011
...THE FLOOD WARNING CONTINUES FOR THE SUSQUEHANNA RIVER BELOW
THE CONOWINGO DAM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK IT IS.
&&
MDC015-025-121138-
/O.CON.KPHI.FL.W.0178.000000T0000Z-000000T0000Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.000000T0000Z.NO/
938 PM EDT SUN SEP 11 2011
THE FLOOD WARNING CONTINUES FOR
THE SUSQUEHANNA RIVER BELOW THE CONOWINGO DAM.
* AT 8:30 PM SUNDAY...THE STAGE WAS 24.08 FEET.
* FLOOD STAGE IS 23.5 FEET.
* FORECAST...THE RIVER LEVEL SHOULD CONTINUE TO FALL UNSTEADILY
AND IT IS EXPECTED TO RETURN BACK BELOW FLOOD STAGE ON MONDAY.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 24.08 SUN 830 PM CRESTED
&&
IOVINO092
WGUS81 KPHI 120733
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
333 AM EDT MON SEP 12 2011
...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN
MARYLAND...
SUSQUEHANNA BELOW CONOWINGO DAM AFFECTING CECIL AND HARFORD COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
MDC015-025-120803-
/O.CAN.KPHI.FL.W.0178.000000T0000Z-110912T0733Z/
/CNWM2.3.ER.110907T2038Z.110909T0915Z.110912T0522Z.NO/
333 AM EDT MON SEP 12 2011
THE FLOOD WARNING IS CANCELLED FOR
THE SUSQUEHANNA BELOW CONOWINGO DAM.
* AT 2:30 AM MONDAY THE STAGE WAS 22.2 FEET.
* FLOOD STAGE IS 23.5 FEET.
* THE LEVEL FELL BELOW FLOOD STAGE AT 1:30 AM MONDAY.
* THE RIVER WILL REMAIN BELOW FLOOD STAGE AND CONTINUE TO FALL.
* IMPACT...AT 21.5 FEET...NOTIFICATION LEVEL 2 WITH 12 TO 15 GATES OPEN
AT CONOWINGO DAM.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SUSQUEHANNA RIVER
CONOWINGO DAM 23.5 22.16 MON 2 AM CRESTED AND FALLING
&&The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 10:21 PM EDT | Flash Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 3 hr |
| Sep 7, 11:48 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 18 hr |
| Sep 7, 1:34 PM EDT | Special Weather Statement | PHI | Cecil | 56 min |
| Sep 7, 6:34 PM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 56 min |
| Sep 7, 7:52 PM EDT | Special Weather Statement | PHI | Harford | 53 min |
Nearby
River Flood Warnings in Maryland, 2011Every river flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.