Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 913

May 10, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 10, 2003, 1:04 PM EST for 4 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
May 10, 2003, 1:04 PM EST (18:04 UTC)
Expired
May 10, 2003, 2:30 PM EST
In force
86 min
Issued by
the Storm Prediction Center
All 58 counties

Blackford County, IN, Dearborn County, IN, Delaware County, IN, Fayette County, IN, Franklin County, IN, Henry County, IN, Jay County, IN, Ohio County, IN, Randolph County, IN, Ripley County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Greenup County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Pendleton County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Cabell County, WV

The radar

The Cincinnati radar (KILN), 28 km from the middle of the area, began a volume at 18:04 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.1 hours before the alert went out and 31 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, Cncnati-Daytn, OH at 12:00Z on 2003-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 149 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2003-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.19395878Sfc1 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
149 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
754 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

680 
ACUS11 KWNS 101804
SWOMCD
SPC MCD 101804 
OHZ000-WVZ000-KYZ000-INZ000-101930-

MESOSCALE DISCUSSION 0913
NWS STORM PREDICTION CENTER NORMAN OK
0104 PM CDT SAT MAY 10 2003

AREAS AFFECTED...FAR ERN IND...SWRN/SCENTRAL OH AND FAR NRN KY

CONCERNING...TORNADO WATCH 336...

VALID 101804Z - 101930Z

A WARM FRONT CONTINUES TO MOVE NWD ACROSS SERN IND/SWRN OH EXTENDING
FROM 30 E OF IND TO NEAR CVG AT 19Z. A SECONDARY BOUNDARY EXTENDED
FROM 30 N OF HTS TO MGY. ELEVATED SUPERCELLS ABOVE THIS SECONDARY
BOUNDARY WILL CONTINUE TO MOVE EWD ACROSS SWRN OH AROUND 30 KTS
WHILE MAINLY POSING A THREAT FOR LARGE HAIL AS THEY MOVE EWD INTO
CENTRAL OHIO /COLUMBUS AREA/ THROUGH 1930Z. FARTHER WEST...A LINE OF
SEVERE THUNDERSTORMS OVER SERN/ECENTRAL IND...WILL CONTINUE TO MOVE
EWD AROUND 35 KTS INTO SWRN OH/FAR NRN KY DURING THE NEXT FEW HOURS.
STRONG LOW LEVEL SHEAR IN THE WARM SECTOR PER REGIONAL VWP/S AND
ALONG THE WARM FRONT WILL SUPPORT A THREAT FOR TORNADOES IN ADDITION
TO DAMAGING WINDS WITH THIS ACTIVITY DURING THE NEXT SEVERAL HOURS.


..CROSBIE.. 05/10/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...PBZ...RLX...CLE...JKL...ILN...LMK...IWX...IND...

38688542 40548540 40208213 38338214

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 8:40 PM ESTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 36 more2 hr
May 9, 10:40 PM ESTSevere Thunderstorm WatchSPCAdams, Allen, Benton, Carroll, Cass, DeKalb and 25 more5 hr
May 10, 3:33 AM ESTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Crawford, Daviess and 41 more87 min
May 10, 8:30 AM ESTTornado WatchSPCBartholomew, Boone, Brown, Clay, Daviess, Decatur and 26 more6 hr
May 10, 9:25 AM ESTMesoscale DiscussionSPCCrawford, Dubois, Gibson, Perry, Pike, Posey and 3 more2 hr
May 10, 10:39 AM ESTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clay, Daviess, Decatur and 28 more2 hr
May 10, 10:54 AM ESTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clark, Clay, Crawford and 48 more66 min
May 10, 11:00 AM ESTTornado WatchSPCBlackford, Dearborn, Delaware, Fayette, Franklin, Henry and 7 more5 hr
May 10, 12:38 PM ESTMesoscale DiscussionSPCBartholomew, Brown, Daviess, Decatur, Greene, Hancock and 16 more97 min
May 10, 10:12 AM ESTMesoscale DiscussionSPCBoone, Bracken, Campbell, Greenup, Harrison, Kenton and 4 more2 hr
May 10, 11:41 AM ESTMesoscale DiscussionSPCBell, Breathitt, Clay, Floyd, Harlan, Jackson and 13 more2 hr
May 10, 12:20 PM ESTTornado WatchSPCBell, Boyd, Breathitt, Carter, Clay, Elliott and 19 more6 hr
May 10, 2:27 PM ESTMesoscale DiscussionSPCBell, Boyd, Breathitt, Carter, Clay, Elliott and 20 more93 min
May 10, 2:46 PM ESTMesoscale DiscussionSPCBoyd, Bracken, Campbell, Fleming, Grant, Greenup and 6 more59 min
May 10, 4:56 PM ESTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more94 min
May 10, 5:30 PM ESTTornado WatchSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 11 more6 hr
May 9, 7:57 PM ESTMesoscale DiscussionSPCAthens, Hocking, Meigs63 min

Nearby

Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Kentucky, 2003Every mesoscale discussion in 2003

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.