River Flood Warning 119, NWS Quad Cities, IA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
305 AM CDT MON MAY 26 2008

.DISCUSSION...
BUSY WITH WIDESPREAD CONVECTION THIS EVENING AND CONTINUING IN OUR
SOUTH ATTM SO WILL BE CONCISE.  NORTHERN 1/2 AREA RECEIVED HEAVY
RAINFALL OF 1 TO OVER 3 INCHES WITH CONSIDERABLE SEVERE WEATHER AND
FLASH FLOODING AND RIVER FLOODING ISSUES. SOUTH HALF GENERALLY
RECEIVING LIGHTER AMOUNTS OF .25 TO .5 INCHES. ANALYSIS SHOWS
INCREASING TRENDS OF NEW CONVECTION TO BREAK OUT NEXT 6 PLUS HOURS
NE/IA/KS/NE REGION WITH SOUTH 1/3 TO 1/2 RECEIVE POTENTIALLY HEAVY
RAINS. WILL KEEP FLASH FLOOD WATCH UNTIL 1 PM FOR DAY SHIFT TO ASSESS
AS LOTS DEPENDS ON PATH OF THE NEXT MCS THAT IS JUST BEGINNING TO
FIRE SE NE AND FAR NW-N MISSOURI.

MINOR CHANGES MADE TO FORECAST PACKAGE WITH TRIMMING OF HIGH TEMPS
TUESDAY AND WEDNESDAY WITH CONCERN UPPER LOW PASSING ON TUESDAY MAY
PRODUCE MORE CLOUDS AND LIGHT RAIN THAN FORECAST ATTM. PASS FOR DAY
SHIFT TO REASSESS.  MIN TEMPERATURES TO BE WELL BELOW NORMAL WED AND
THU AM WITH AGAIN SOME UPPER 30/S POSSIBLE. SOLUTIONS TRENDING THU
NGHT AND FRIDAY SYSTEM TO BE A STRONGER WITH HEAVIER AMOUNTS OF
PRECIPITATION. HAVE UPPED POPS TO 40-50 AND WILL EMPHASIZE A BIT MORE
IN WEATHER HAZARDOUS PRODUCT.../CHIHWODVN/.   ..NICHOLS..

&&

.AVIATION...
CURRENT SEVERE MCS NOW EAST OF ALL TAF SITES WITH NEW DEVELOPMENT
OCCURRING ACROSS NORTHERN MO/SOUTHERN IA. BASED ON CURRENT TRENDS...
KCID/KDBQ TO BE THE LEAST AFFECTED THROUGH 00Z WITH MAINLY VFR WX
EXPECTED. MAY CARRY CB REFERENCE FOR KCID. KMLI/KBRL TO SEE
ADDITIONAL PRECIP WITH THE POTENTIAL FOR TSRA. CIGS SHOULD GENERALLY
REMAIN VFR BUT EXPECT TO SEE SOME MVFR NEAR 3KFT WITH PRECIP. VSBYS
SHOULD MAINLY BE 3-5SM BUT COULD DROP TO 1-2SM AT KBRL WITH STRONGER
STORMS.          ..08..

&&

.HYDROLOGY...
HEAVY RAIN HAS FALLEN ALONG THE HIGHWAY 20 CORRIDOR AND DOWN TOWARD
WHITESIDE COUNTY. ADJUSTING RADAR ESTIMATED DUE TO HAIL
CONTAMINATION YIELDS 2.5 TO 6 INCHES OF RAIN WEST OF DUBUQUE WHICH
DOVETAILS NICELY WITH KNOWN PRECIPITATION AMOUNTS. MCHI4 CURRENTLY
RISING AT 2-3 FEET/HOUR AND HAVE ISSUED AN FLW BASED ON OUTPUT FROM
SITE SPECIFIC. NORTH FORK OF THE MAQUOKETA RIVER STARTING TO RISE AS
WELL AS FURTHER SOUTH ON THE MAQUOKETA. DEPENDING UPON NEW
GUIDANCE...FULLY EXPECT ADDITIONAL SITES WILL NEED TO HAVE FLWS
ISSUED LATER THIS MORNING.     ..08..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH FROM SUNDAY EVENING THROUGH THIS MORNING
     FOR DES MOINES-HENRY IA-JEFFERSON-KEOKUK-LEE-LOUISA-VAN BUREN-
     WASHINGTON.

IL...FLASH FLOOD WATCH FROM SUNDAY EVENING THROUGH THIS MORNING
     FOR HANCOCK-HENDERSON-MCDONOUGH-MERCER-WARREN.

MO...FLASH FLOOD WATCH FROM SUNDAY EVENING THROUGH THIS MORNING
     FOR CLARK-SCOTLAND.

&&

08/NICHOLS

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
336 AM CDT MON MAY 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1110 AM     TSTM WND DMG     1 NW MARION             42.05N 91.61W
05/25/2008                   LINN               IA   TRAINED SPOTTER

            SPOTTER REPORTS SCATTERED POWER OUTAGES WITH SEVERAL
            LARGE TREES DOWN AROUND THE AREA. TIME IS ESTIMATED.

&&

MIKEZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
449 AM CDT MON MAY 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0448 AM     HEAVY RAIN       3 NNW CEDAR RAPIDS      42.02N 91.70W
05/26/2008  M1.24 INCH       LINN               IA   TRAINED SPOTTER

            RAINFALL TOTAL FROM 1130 PM TO 12 MIDNIGHT.

&&

MIKEZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
543 AM CDT MON MAY 26 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0540 AM     HEAVY RAIN       GERMAN VALLEY           42.22N 89.48W
05/26/2008  M1.05 INCH       STEPHENSON         IL   TRAINED SPOTTER

            24 HOUR TOTAL.

&&

MIKEZ

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