National Weather Service Raw Text Product

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ACUS1 KMKC 201857 
MKC AC 201900  
 
CONVECTIVE OUTLOOK...REF AFOS NMCGPH94O 
 
VALID 201900 - 211200Z  
 
REF WW 404 VALID TIL 21Z. WW 405 VALID TIL 02Z. WW 406 VALID  
TIL 02Z.  
 
OTRW...THERE IS A HIGH RISK OF SVR TSTMS OVR ERN UPR MI AND LWR 
MI THIS AFTN AND EVE. AREA IS TO THE RT OF A LN FM 20 S DTW 
AZO MKG MBL 80 W SSM. 
 
THERE IS MDT RISK OF SVR TSTMS OVR WRN UPR MI AND MOST OF WI. 
AREA IS TO THE RT OF A LN FM 80 W SSM MBL MKG MKE LNR LSE 
EAU IWD CMX.  
 
THERE ALSO IS MDT RISK OF SVR TSTMS OVR PTNS OF CNTRL AND ERN 
NY. AREA IS TO THE RT OF A LN FM 10 N PBG 50 S ALB BGM  
50 WNW SYR. 
 
SURROUNDING THE MDT RISK AREAS IS A SLGT RISK OF SVR TSTMS TO THE 
RT OF A LN FM 60 N BML PSM...CONTD...ACY RDG PIT FDY DBQ YKN  
CDR 4DG CPR 30 N GCC DIK 60 N DVL.  
 
GEN TSTMS ARE FCST TO RT OF A LN FM IPL DAG FAT SAC RBL SIY RDM 
PSC 80 N SFF...CONT...NTU MGW CMH CMI IRK EMP OKC FTW LFK HEZ 
MEI MGM SSI.  
 
DERECHO...MULTIPLE DOWNBURST PRODUCING SYS...MOVG RPDLY ESEWD ACRS  
WI TWDS LWR MI. AXIS OF UPR 70S SFC DEWPTS EXTDS FM CNTRL WI SEWD 
ACRS SRN LWR MI. SFC BASED LIFTED INDICES AT 18Z MINUS 12 TO 13 JUST  
TO S OF CNVTV SYS. TREND HAS BEEN FOR CNVTV COMPLEX TO MOV JUST TO  
N OF HIER LOW LVL MSTR. CURRENT INDCN HWVR IS SYS APPRS TO SHFTG SWD  
TO MORE CLOSELY FOLLOW DEWPT GRADIENT OVR ERN WI/LWR MI. WITH MAX 
HEATING AND DIURNAL INSTBY NOW OCRG...EXPC FURTHER INTENSIFICATION  
OF CNVTN THIS AFTN WITH MAIN SVR POTENTIAL VERY STG STRAIGHT LINE 
WINDS.  
 
THERMODYNANAMICS VERY FAVORABLE OVR NY. LOW LVL THERMAL AXIS HAS  
DVLPD ACRS SRN ONT WITH FAVORABLE JUXTAPOSITION TO LOW LVL MOIST  
AXIS ACRS PTNS CNTRL NY. EXPC SVR TSTMS TO DVLP RPDLY NEXT FEW HRS  
AS MID LVL DRYING INDCD ON STLT WATER VAPOR LOOP MOVS TWDS AREA.  
 
AMS RMNS MDTLY UNSTBL OVR RMNDR PTNS NRN PLAINS/UPR MS VLY. ACC 
ACRS SD INDCS LOW LVL WRM ADVCTN RTNG INTO THE DAKS. WITH PROGS 
INDCG SVRL MID/UPR WIND MAXES TO CONT MOVG NEWD THRU AREA DURG PD 
...ISOLD SVR TSTMS STILL PSBL DESPITE LACK OF AN ORGANIZED SFC SYS. 
 
..HIRT.. 07/20/87