Alert archive / Virginia / Flash Flood Warnings in 2006

Flash Flood Warning 46, NWS Baltimore/Washington

June 26, 2006Highland County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Jun 26, 2006, 3:44 AM EDT for Highland County, Virginia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 26, 2006, 3:44 AM EDT (07:44 UTC)
Expired
Jun 26, 2006, 6:30 AM EDT
In force
3 hr
Issued by
NWS Baltimore/Washington
Area
Counties, with a storm outline in the text

County Highland County, VA

The radar

The Roanoke radar (KFCX), 161 km from the middle of the area, began a volume at 07:45 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

Roanoke, VA (KRNK), launched 00:00Z, 7.7 hours before the alert went out and 129 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.

Skew-T log-pSkew-T log-p diagram, Roanoke, VA at 00:00Z on 2006-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 585 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2006-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
585 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 26, 3:14 AM EDT, 30 minutes earlier.

Area forecast discussion, Jun 26, 3:14 AM EDT, 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
314 AM EDT MON JUN 26 2006

.SHORT TERM /TODAY THROUGH TONIGHT/...
REAL BUSY NGT HERE. WL MAKE THIS AS BRIEF AS PSBL. ONE RND OF PCPN
EXITING CWFA...MVG INTO ERN PA ATTM. SIG FLASH FLOODING HAS
ACCOMPANIED THIS AREA. HWVR...ANTHR BAND HAS SET UP SHOP W OF SHEN
VLY...NEAR GOOD SYNOPTIC FORCING. SCT SHRA IN BTWN.

AMS REMAINS ABNORMALLY MOIST...W/ TONGUE PWAT AOA 2 INCHES BTWN
SHEN VLY AND CHSPK BAY. VAPOR LOOP SUPPORTING THIS...SHWG LONG
PLUME OF MSTR STREAMING INTO CWFA. FRTHR...AMS TRPCLY UNSTBL...SO
ANY DIURNAL HEATING...SPCLY THAT WHICH SHUD OCCUR IN BTWN HVYR
BANDS...WL BE HVY RAINERS. IT WL CONT TO BE REAL TUFF TO PIN DWN
WHERE/WHEN IT WL RAIN...AS MESOSCALE FEATURES AND MANY LURKING
BNDRYS WL LIKELY PLAY A ROLE AS WELL. THE THREAT EXISTS FOR RAFL
JUST ABT EVRYWHR...AND WHEN IT DOES SO...RATES WL EASILY OVRCOME
SATD GRNDS. WL GO CAT POPS MOST OF CWFA NXT 36 HRS...XCPT LIKELY
FOR THE SE. RAFL WL BE ACCOMPANIED BY LONG LIVED FFA-- 00Z WED. NOT
PLANNING ANY BIG CHGS TO TEMP GRIDS...WHICH ALREADY REFLECT SMALL
DIURNAL TRENDS IN SATD AMS.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
AS ALLUDED TO ABV...DEEP MSTR PLUME CONTS INTO TUE...W/ POTENTIAL
TROPICAL SFC LOW EMBEDDED W/IN FLOW ACCESSING ATLC MSTR AS WELL. HV
NOT ASSESSED RAMIFICATIONS OF THIS FEATURE BYD ITS ROLE AS A FOCUS
FOR HVY RAIN. FFA XTNDD THRU 00Z WED. FUTURE CYCLES NEED TO LOOK
AT THIS CLOSELY. HV SIGNIFICANTLY BUMPED UP POPS TUE-TUE NGT...W/
FEW CHGS THRAFTR.
&&

.AVIATION...
THREAT EXISTS FOR BRIEF SHRA/TSRA TO GREATLY REDUCE VSBYS AT ABT ANY
TIME. HV NOT ATTEMPTED TO PIN ALL THAT DWN. DO FEEL THAT LOW CIGS
/AOB 1K FT/ SHUD REMAIN MORE OFTEN THAN NOT THRU VALID CYCLE /06Z/.
FOR THE MOST PART...VSBYS SHUD BE IN MVFR RANGE...THO LCL IFR VSBYS
QUITE LIKELY W/IN ANY SHRA/TSRA.
&&

.MARINE...
SYNOPTIC SCALE WNDS IN DEEP SLY FLOW 15-20 KT TDA-TMRW...ABSENT OF
ANY CONVCTV INFLUENCE. NMM PROFILES DEPICT STRONG MOMENTUM
TRANSPORT. HV SCA IN EFFECT AS A RSLT.
&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...FLASH FLOOD WATCH FOR DCZ001 UNTIL 8 PM TUESDAY.
MD...FLASH FLOOD WATCH FOR MDZ002>007-009>011-013-014-016 UNTIL 8
     PM TUESDAY.
VA...FLASH FLOOD WATCH FOR VAZ021-025>031-036>042-050>057 UNTIL 8
     PM TUESDAY.
WV...FLASH FLOOD WATCH FOR WVZ048>055 UNTIL 8 PM TUESDAY.
MARINE...SMALL CRAFT ADVISORY FOR ANZ530-531-535-536 FROM 7 AM MONDAY
     TO 8 PM MONDAY.
  ...SMALL CRAFT ADVISORY FOR ANZ532>534-537 UNTIL 6 PM TUESDAY.
&&

HTS
Hazardous weather outlook, Jun 25, 10:45 PM EDT, 4 hours 59 minutes before
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In the hours before

Local storm report, Jun 25, 10:50 PM EDT, 4 hours 54 minutes before
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Local storm report, Jun 25, 10:51 PM EDT, 4 hours 53 minutes before
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Local storm report, Jun 25, 11:17 PM EDT, 4 hours 27 minutes before
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Local storm report, Jun 26, 12:10 AM EDT, 3 hours 34 minutes before
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Local storm report, Jun 26, 12:10 AM EDT, 3 hours 34 minutes before
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Local storm report, Jun 26, 1:08 AM EDT, 2 hours 36 minutes before
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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 8:51 PM EDTFlash Flood WarningLWXArlington, City of Alexandria, City of Falls Church4 hr
Jun 25, 11:43 PM EDTFlash Flood WarningLWXHighland4 hr
Jun 26, 12:26 AM EDTFlash Flood WarningLWXArlington, City of Alexandria, City of Falls Church3 hr
Jun 26, 6:41 AM EDTCoastal Flood StatementLWXArlington, Fairfax, King George, Stafford, City of Alexandria, City of Fairfax and 1 more109 min
Jun 26, 8:30 AM EDTCoastal Flood WarningLWXArlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church4 hr
Jun 26, 9:34 AM EDTFlash Flood WarningLWXAugusta, Highland, City of Staunton, City of Waynesboro6 hr
Jun 26, 10:49 AM EDTFlash Flood WarningLWXRockingham, City of Harrisonburg4 hr
Jun 26, 11:09 AM EDTFlash Flood WarningLWXArlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church6 hr
Jun 26, 12:13 PM EDTFlash Flood WarningLWXFauquier, Prince William, City of Manassas, City of Manassas Park6 hr
Jun 26, 1:06 PM EDTFlash Flood WarningLWXCulpeper, Orange, Spotsylvania, Stafford, City of Fredericksburg6 hr
Jun 26, 1:17 PM EDTFlash Flood WarningLWXLoudoun3 hr
Jun 26, 2:22 PM EDTFlash Flood WarningLWXNelson6 hr
Jun 26, 4:56 PM EDTFlash Flood WarningLWXArlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church6 hr
Jun 26, 5:39 PM EDTSpecial Marine WarningLWX96 min
Jun 26, 6:08 PM EDTFlash Flood WarningLWXPrince William, City of Manassas, City of Manassas Park6 hr
Jun 25, 8:16 PM EDTFlash Flood WarningLWXBaltimore, City of Baltimore4 hr
Jun 25, 10:13 PM EDTFlash Flood WarningLWXHarford3 hr
Jun 25, 10:14 PM EDTFlash Flood WarningLWXPrince George's3 hr
Jun 25, 10:51 PM EDTFlash Flood WarningLWXMontgomery4 hr
Jun 25, 11:04 PM EDTFlash Flood WarningLWXHoward4 hr
Jun 26, 1:01 AM EDTFlash Flood WarningLWXHarford119 min
Jun 26, 2:32 AM EDTFlash Flood WarningLWXAllegany4 hr
Jun 26, 4:37 AM EDTFlash Flood WarningLWXWashington3 hr
Jun 26, 11:15 AM EDTFlash Flood WarningLWXAnne Arundel4 hr
Jun 26, 11:31 AM EDTFlash Flood WarningLWXBaltimore, Harford, City of Baltimore6 hr
Jun 26, 1:16 PM EDTFlash Flood WarningLWXHoward6 hr
Jun 26, 3:34 PM EDTFlash Flood WarningLWXCarroll6 hr
Jun 26, 7:09 PM EDTFlash Flood WarningLWXHoward6 hr

Nearby

Flash Flood Warnings in Virginia, 2006Every flash flood warning in 2006

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.