Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 71, NWS St. Louis, MO

July 26, 2015Adams County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jul 26, 2015, 5:03 AM CDT for Adams County, Illinois. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 26, 2015, 5:03 AM CDT (10:03 UTC)
Expired
Jul 26, 2015, 10:00 AM CDT
In force
5 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

County Adams County, IL

The radar

The St Louis radar (KLSX), 146 km from the middle of the area, began a volume at 10:05 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

Davenport, (KDVN), launched 00:00Z, 10.1 hours before the alert went out and 197 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, Davenport, at 00:00Z on 2015-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 392 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2015-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
392 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1604 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

646 
WGUS53 KLSX 261003
FFWLSX
ILC001-261500-
/O.NEW.KLSX.FF.W.0071.150726T1003Z-150726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
503 AM CDT SUN JUL 26 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 1000 AM CDT
    
* AT 502 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING   
  HEAVY RAIN MOVED ACROSS THE COUNTY OVER THE PAST SEVERAL HOURS. 
  SINCE 230 AM...RADAR ESTIMATES 2 TO 4 INCHES OF RAIN FELL OVER 
  EASTERN SECTIONS OF THE COUNTY.  ALTHOUGH THE RAIN IS 
  DIMINISHING...ADDITIONAL STORMS WITH LOCALIZED AREAS OF HEAVY RAIN 
  ARE POSSIBLE THIS MORNING.  

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  QUINCY...CAMP POINT...PAYSON...MENDON...LA GRANGE...CLAYTON...
  GOLDEN...FALL CREEK...BEVERLY...ADAMS...KINGSTON...BURTON...URSA...
  LIBERTY...RICHFIELD...LORAINE...PLAINVILLE...WOODVILLE...LIMA AND
  COATSBURG.

THIS INCLUDES INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 
THIS WARNING ALSO INCLUDES SILOAM SPRINGS STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4019 9091 3977 9092 3976 9092 3976 9136
      3980 9137 3984 9144 3987 9145 3993 9142
      4003 9150 4019 9151

$$

TRUETT
2 follow-up statements
504 
WGUS73 KLSX 261212
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
712 AM CDT SUN JUL 26 2015

ILC001-261500-
/O.CON.KLSX.FF.W.0071.000000T0000Z-150726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS IL-
712 AM CDT SUN JUL 26 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR
ADAMS COUNTY...

AT 707 AM CDT...DOPPLER RADAR INDICATED SCATTERED THUNDERSTORMS WITH 
BRIEF HEAVY DOWNPOURS MOVING BACK INTO ADAMS COUNTY.  HOWEVER...A 
LARGER THUNDERSTORM COMPLEX IS DROPPING SOUTHEAST OUT OF IOWA...AND 
THIS COMPLEX COULD BRING WIDESPREAD...HEAVIER RAIN TO ADAMS 
COUNTY AFTER 9AM.  
 
RAINFALL ESTIMATES FROM RADAR INDICATE 3 TO 4 INCHES OF RAIN FELL 
OVER PARTS OF EASTERN ADAMS COUNTY DURING THE EARLY MORNING 
HOURS...MOST OF WHICH FELL IN A 2 HOUR TIME FRAME.    

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
QUINCY...CAMP POINT...PAYSON...MENDON...LA GRANGE...CLAYTON...
GOLDEN...FALL CREEK...BEVERLY...ADAMS...KINGSTON...BURTON...URSA...
LIBERTY...RICHFIELD...LORAINE...PLAINVILLE...WOODVILLE...LIMA AND
COATSBURG.

THIS INCLUDES INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 
THIS WARNING ALSO INCLUDES SILOAM SPRINGS STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4019 9091 3977 9092 3976 9092 3976 9136
      3980 9137 3984 9144 3987 9145 3993 9142
      4003 9150 4019 9151

$$

TRUETT
780 
WGUS73 KLSX 261500
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1000 AM CDT SUN JUL 26 2015

ILC001-261507-
/O.EXP.KLSX.FF.W.0071.000000T0000Z-150726T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS IL-
1000 AM CDT SUN JUL 26 2015

...THE FLASH FLOOD WARNING FOR ADAMS COUNTY WILL EXPIRE AT 1000 AM
CDT...

AT 955 AM...ANOTHER ROUND OF STORMS WAS MOVING THROUGH ADAMS COUNTY. 
HOWEVER...THE HEAVIER RAINS WITH THESE STORMS ARE FALLING TO THE 
SOUTHWEST OF ADAMS COUNTY. SO ADDITIONAL FLASH FLOODING IS NOT 
EXPECTED AT THIS TIME...THEREFORE THE FLASH FLOOD WARNING FOR ADAMS 
COUNTY WILL BE ALLOWED TO EXPIRE.

LAT...LON 4019 9091 3977 9092 3976 9092 3976 9136
      3980 9137 3984 9144 3987 9145 3993 9142
      4003 9150 4019 9151

$$

BYRD

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 4:23 AM CDTSpecial Weather StatementLSXCalhoun52 min
Jul 26, 4:45 AM CDTFlash Flood WarningLSXPike6 hr
Jul 26, 3:55 PM CDTHeat AdvisoryLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more53 hr

Nearby

Flash Flood Warnings in Illinois, 2015Every flash flood warning in 2015

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.