Alert archive / Maryland / Flash Flood Warnings in 2000
Flash Flood Warning 20, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Jul 30, 2000, 4:45 PM EDT for Carroll County, Maryland. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 30, 2000, 4:45 PM EDT (20:45 UTC)
- Expired
- Jul 30, 2000, 5:45 PM EDT
- In force
- 60 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Carroll County, MD
The radar
The Sterling radar (KLWX), 94 km from the middle of the area, began a volume at 20:45 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.8 hours before the alert went out and 94 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
- 203 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 762 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KLWX 302046 FFWLWX MDC013-302145- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON 445 PM EDT SUN JUL 30 2000 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * FLASH FLOOD WARNING FOR... CARROLL COUNTY IN NORTH CENTRAL MARYLAND * UNTIL 545 PM EDT * AT 435 PM EDT...EMERGENCY MANAGERS REPORT FLOODING IN THE TOWN OF UNION BRIDGE * THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR... WESTMINSTER AT 448 PM EDT MANCHESTER AT 508 PM EDT DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN STERLING VIRGINIA. LAT...LON 3963 7728 3951 7711 3987 7656 4006 7680 ABW
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at Jul 30, 2:55 PM EDT, 1 hour 50 minutes earlier.
Area forecast discussion, Jul 30, 2:55 PM EDT, 1 hour 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 255 PM EDT SUN JUL 30 2000 SCATTERED SHWRS AND TSTMS TO CONT INTO TONIGHT AS S/W MOVES ACROSS. MAIN CONCERN CONTS TO BE HEAVY RAIN. MDLS BRING CONVECTIVE AREA ALG CAROLINA CST NWD ACRS SE VA. ETA SEEMS TO BRING IT CLOSER TO OUR FA AND AVN KEEPS IT FURTHER SE. WILL NEED TO WATCH THIS FOR EARLY MONDAY TIME PD. THEN ANOTHER S/W SPITS OUT OF UPR LOW TO THE WEST CONTG CHC OF SHWRS AND TSTMS OVR FA INTO MON NIGHT. HENCE PATRN CONT WITH LTL CHG THRU THE EXTNDD PD. FCSTID = 7 DCA 73 85 75 87 / 50 50 40 30 BWI 69 86 72 87 / 50 50 40 30 MRB 65 86 68 88 / 50 40 50 30 IAD 66 86 - 70 88 / 50 40 40 30 CHO 68 87 72 88 / 50 40 40 30 HGR 64 85 67 87 / 50 40 50 30 NHK 74 86 76 87 / 50 50 40 40 .LWX... DC...NONE. MD...NONE. VA...NONE. WV...NONE. WATSON
Nearby
Flash Flood Warnings in Maryland, 2000Every flash flood warning in 2000
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.