Alert archive / Iowa / Flash Flood Warnings in 2013

Flash Flood Warning 17, NWS Quad Cities, IA

May 26, 20136 counties in Iowa

NWS Quad Cities, IA issued this flash flood warning at May 26, 2013, 4:52 PM CDT for 6 counties in Iowa. It was in force for 9 hr. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 26, 2013, 4:52 PM CDT (21:52 UTC)
Expired
May 27, 2013, 1:45 AM CDT
In force
9 hr
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Flood severity
None

Counties Benton County, IA, Cedar County, IA, Iowa County, IA, Johnson County, IA, Linn County, IA, Muscatine County, IA

The radar

The Quad Cities radar (KDVN), 106 km from the middle of the area, began a volume at 21:54 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.

What was reported inside it

TimeReportWhereRemark
May 26, 5:18 PM CDTFLASH FLOODW Koszta, IAWATER OVER THE ROADWAY ON HIGHWAY 212 IN NORTHWEST IOWA COUNTY.
May 26, 5:18 PM CDTHEAVY RAIN 1.75W Belle Plaine, IARAINFALL TOTAL SINCE MIDNIGHT
May 26, 6:17 PM CDTFLASH FLOODMarengo, IAFLOODING OVER HIGHWAY 6 THROUGH MARENGO AND TO THE EAST.
May 26, 7:39 PM CDTHEAVY RAIN 1.352 Nnw North Liberty, IASINCE 8 AM
May 26, 8:00 PM CDTHEAVY RAIN 3Wnw Parnell, IARAINFALL SINCE MIDNIGHT. 1.75 INCHES IN THE LAST 90 MINUTES.
May 26, 8:20 PM CDTHEAVY RAIN 3.65North Liberty, IATOTAL SINCE 8 AM SATURDAY MAY 25
May 26, 9:00 PM CDTFLASH FLOODWilliamsburg, IANUMEROUS COUNTY ROADS IMPACTED BY OUT AND IMPACTED BY WATER ACROSS IOWA COUNTY. CONDITIONS IMPROVING AS OF 10 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this flash flood warning; the first came 26 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.9 hours before the alert went out and 113 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 12:00Z on 2013-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Davenport, at 12:00Z on 2013-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

379 
WGUS53 KDVN 262152
FFWDVN
IAC011-031-095-103-113-139-270645-
/O.NEW.KDVN.FF.W.0017.130526T2152Z-130527T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
452 PM CDT SUN MAY 26 2013

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN BENTON COUNTY IN EAST CENTRAL IOWA...
  SOUTHWESTERN CEDAR COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF WEST BRANCH...
  IOWA COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF MARENGO...
  JOHNSON COUNTY IN EAST CENTRAL IOWA...
  THIS INCLUDES THE CITY OF IOWA CITY...
  SOUTHWESTERN LINN COUNTY IN EAST CENTRAL IOWA...
  NORTHWESTERN MUSCATINE COUNTY IN EAST CENTRAL IOWA...

* UNTIL 145 AM CDT MONDAY

* AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH A HISTORY OF PRODUCING FLASH FLOODING MOVING
  THROUGH SOUTHWEST BENTON AND NORTHWEST IOWA COUNTIES. THESE STORMS
  WILL MOVE EAST ACROSS THE WARNING AREA BRINGING VERY HEAVY RAIN OF
  1 TO 2 INCHES OR MORE IN A SHORT PERIOD OF TIME. THIS WILL FALL ON
  ALREADY SATURATED GROUND AND GO STRAIGHT INTO RUNOFF RESULTING IN 
  FLASH FLOODING. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SWISHER...
  SHUEYVILLE...ELY...WALFORD...NORWAY...LUZERNE...BLAIRSTOWN AND
  BELLE PLAINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE ON FLOODED ROADS. MOST FATALITIES OCCUR IN VEHICLES
SWEPT AWAY IN FLOOD WATERS AS SHALLOW AS 1 FOOT.

FLOODING OF SMALL STREAMS AND CREEKS...HIGHWAYS AND STREETS...
UNDERPASSES AND LOW LYING URBAN AND RURAL AREAS IS LIKELY.

IF YOU ARE CAMPING NEAR A STREAM...CREEK OR OTHER LOW LYING AREA...
MOVE IMMEDIATELY TO HIGHER GROUND.

PLEASE REPORT ANY FLOODING OR DAMAGE TO YOUR LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4196 9228 4183 9116 4147 9121 4157 9230

$$
3 follow-up statements
366 
WGUS73 KDVN 262349
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
649 PM CDT SUN MAY 26 2013

IAC011-031-095-103-113-139-270645-
/O.CON.KDVN.FF.W.0017.000000T0000Z-130527T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MUSCATINE IA-LINN IA-JOHNSON IA-IOWA IA-BENTON IA-CEDAR IA-
649 PM CDT SUN MAY 26 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT MONDAY
FOR SOUTHWESTERN CEDAR...SOUTHERN BENTON...IOWA...JOHNSON...
SOUTHWESTERN LINN AND NORTHWESTERN MUSCATINE COUNTIES...

AT 643 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA. THE LINE EXTENDED FROM IOWA CITY...TO FRYTOWN AND MILLERSBURG
MOVING EAST...SOUTHEAST AT 20 MPH. RAINFALL AMOUNTS OF 1 TO 2 INCHES
IN LESS THAN AN HOURS TIME IS LIKELY WITHIN THIS LINE OF STORMS. THIS 
HEAVY RAIN WILL BE FALLING ON ALREADY SATURATED GROUND AND GO STRAIGHT INTO
RUNOFF ENHANCING THE THREAT OF FLASH FLOODING. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SWISHER...
SOLON...SHUEYVILLE...OXFORD...NORTH LIBERTY...LAKE MACBRIDE STATE
PARK...MARENGO...LADORA...CONROY...AMANA...ELY...WALFORD...NORWAY...
LUZERNE...BLAIRSTOWN AND BELLE PLAINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE ON FLOODED ROADS. MOST FATALITIES OCCUR IN VEHICLES
SWEPT AWAY IN FLOOD WATERS AS SHALLOW AS 1 FOOT.

FLOODING OF SMALL STREAMS AND CREEKS...HIGHWAYS AND STREETS...
UNDERPASSES AND LOW LYING URBAN AND RURAL AREAS IS LIKELY.

IF YOU ARE CAMPING NEAR A STREAM...CREEK OR OTHER LOW LYING AREA...
MOVE IMMEDIATELY TO HIGHER GROUND.

PLEASE REPORT ANY FLOODING OR DAMAGE TO YOUR LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4196 9228 4183 9116 4147 9121 4157 9230

$$
931 
WGUS73 KDVN 270107
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
807 PM CDT SUN MAY 26 2013

IAC011-031-095-103-113-139-270645-
/O.CON.KDVN.FF.W.0017.000000T0000Z-130527T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MUSCATINE IA-LINN IA-JOHNSON IA-IOWA IA-BENTON IA-CEDAR IA-
807 PM CDT SUN MAY 26 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
SOUTHWESTERN CEDAR...SOUTHERN BENTON...IOWA...JOHNSON...SOUTHWESTERN
LINN AND NORTHWESTERN MUSCATINE COUNTIES...

AT 757 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE HEAVY RAIN PRODUCING THUNDERSTORMS HAVE MOVED OUT OF THE
AREA. HOWEVER...WIDESPREAD FLOODING OF STREAMS...CREEKS AND 
ROADWAYS WILL PERSIST FOR A WHILE DESPITE THE HEAVY RAIN HAVING ENDED.
ADDITIONAL SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN DEVELOPING 
OVER NORTHWEST IOWA MAY DEVELOP OR MOVE BACK INTO THE WARNED AREA LATE
THIS EVENING AND OVERNIGHT. IF THIS WERE TO OCCUR...THEN A RENEWED
ROUND OF FLASH FLOODING CAN BE EXPECTED WITH THE GROUND SATURATED FROM
THE RECENT HEAVY RAIN. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SWISHER...
SOLON...SHUEYVILLE...OXFORD...NORTH LIBERTY...LAKE MACBRIDE STATE
PARK...MARENGO...LADORA...CONROY...AMANA...ELY...WALFORD...NORWAY...
LUZERNE...BLAIRSTOWN AND BELLE PLAINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE ON FLOODED ROADS. MOST FATALITIES OCCUR IN VEHICLES
SWEPT AWAY IN FLOOD WATERS AS SHALLOW AS 1 FOOT.

FLOODING OF SMALL STREAMS AND CREEKS...HIGHWAYS AND STREETS...
UNDERPASSES AND LOW LYING URBAN AND RURAL AREAS IS LIKELY.

IF YOU ARE CAMPING NEAR A STREAM...CREEK OR OTHER LOW LYING AREA...
MOVE IMMEDIATELY TO HIGHER GROUND.

PLEASE REPORT ANY FLOODING OR DAMAGE TO YOUR LOCAL LAW ENFORCEMENT
AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4196 9228 4183 9116 4147 9121 4157 9230

$$
677 
WGUS73 KDVN 270312
FFSDVN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1012 PM CDT SUN MAY 26 2013

IAC011-031-095-103-113-139-270318-
/O.CAN.KDVN.FF.W.0017.000000T0000Z-130527T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MUSCATINE IA-LINN IA-JOHNSON IA-IOWA IA-BENTON IA-CEDAR IA-
1012 PM CDT SUN MAY 26 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
CEDAR...SOUTHERN BENTON...IOWA...JOHNSON...SOUTHWESTERN LINN AND
NORTHWESTERN MUSCATINE COUNTIES...

FLASH FLOODING WHICH WAS REPORTED IN MANY PORTIONS OF THE WARNED 
AREA...HAS IMPROVED...AND IS REPORTED BY LAW ENFORCEMENT TO BE HAVE 
SUBSIDED. NO NEW ROAD CLOSURES AND IMPACTS HAVE BEEN RECEIVED AS OF 
10 PM. THERE IS NO IMMEDIATE THREAT OF ADDITIONAL HEAVY 
RAIN...THEREFORE THE FLASH FLOOD WARNING HAS BEEN CANCELLED. 

HOWEVER...A FLASH FLOOD WATCH REMAINS IN EFFECT...AND NEW 
THUNDERSTORM DEVELOPMENT IS ANTICIPATED LATE TONIGHT AND MONDAY 
WHICH WILL CARRY A STRONG RISK FOR ADDITIONAL FLASH FLOODING. KEEP 
UP TO DATE ON THIS FLOODING POTENTIAL...AND NEVER CROSS A FLOODED 
ROAD.


LAT...LON 4196 9228 4183 9116 4147 9121 4157 9230

$$

ERVIN

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 Quad Cities, IA wrote its last area forecast discussion before this flash flood warning went out at May 26, 3:26 PM CDT, 1 hour 26 minutes earlier.

Area forecast discussion, May 26, 3:26 PM CDT, 1 hour 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
326 PM CDT SUN MAY 26 2013

.SYNOPSIS...
ISSUED AT 325 PM CDT SUN MAY 26 2013

LOW PRESSURE IN WESTERN SD HAS A STATIONARY FRONT EXTENDING INTO
EASTERN MO. NORTH OF THE FRONT CURRENT TEMPERATURES WERE ONLY IN
THE 50S FROM EASTERN IA INTO SOUTHERN MN ALONG WITH SCATTERED
THUNDERSTORMS IN THE COOL AIR. TRAINING OF STORMS ALREADY
OCCURRING IN CENTRAL IA AND SPREADING INTO THE DVN CWA. SOUTH OF
THE FRONT TEMPERATURES WERE IN THE 80S WITH DEW POINTS IN THE 60S.
READINGS WERE IN THE 90S IN WESTERN KS INTO WESTERN TX.

SO FAR THIS WEEKEND RAINFALL AMOUNTS HAVE RANGED FROM 1 TO 4
INCHES ACROSS PORTIONS OF EASTERN IA...NORTHEAST MO AND WESTERN IL.

&&

.SHORT TERM...(THIS EVENING THROUGH MONDAY)
ISSUED AT 325 PM CDT SUN MAY 26 2013

HEADLINES...FLASH FLOOD WATCH IN EFFECT FOR MUCH OF THE CWA EXCEPT
NW IL THROUGH MEMORIAL DAY.

TONIGHT...ONGOING SCATTERED THUNDERSTORMS ARE EXPECTED TO INCREASE
IN COVERAGE THIS EVENING AND CONTINUE OVERNIGHT. THIS WILL BE DUE
A LOW LEVEL JET FROM THE SOUTHWEST INCREASING TO 40-45 KNOTS.
STRONG SPEED CONVERGENCE NOTED LATER TONIGHT. PRECIPITABLE WATERS
ALSO INCREASE TO OVER 1.60 INCHES WHICH IS WELL ABOVE NORMAL FOR
LATE MAY. THIS WILL SUPPORT HEAVY RAINFALL IN THUNDERSTORMS AND
ANY REPEATING (TRAINING) THUNDERSTORMS OVER THE SAME AREA WILL
PRODUCE SEVERAL INCHES OF RAINFALL. THIS MAY CAUSE FLASH FLOODING
AND SIGNIFICANT RISES ON AREA RIVERS AND STREAMS. CAMPERS NEAR
FLOOD PRONE AREAS WILL NEED TO REMAIN ALERT. NOT EXPECTING SEVERE
WEATHER DUE TO THE DEEP SATURATED COLUMN BUT PEA SIZE HAIL AND
FREQUENT CLOUD TO GROUND LIGHTNING MAY OCCUR IN THE STRONGER
STORMS. MINIMUM TEMPERATURES WILL BE IN THE 50S.

MEMORIAL DAY...THUNDERSTORM COMPLEX SHOULD CONTINUE ACROSS MUCH OF
THE CWA THROUGH THE MORNING WITH SOME MODELS SUGGESTING AT LEAST
SCATTERED STORMS CONTINUING THROUGH MUCH OF THE DAY. PRECIPITABLE
WATERS OF OVER 1.70 INCHES WILL PRODUCE TORRENTIAL RAINFALL WITH
THE THREAT OF FLASH FLOODING. ONCE AGAIN DUE TO THE HOLIDAY
EVERYONE SHOULD REMAIN ALERT ESPECIALLY CAMPERS NEAR FLOOD PRONE AREAS.
TEMPERATURES THE PAST COUPLE OF DAYS HAVE REMAINED MUCH COOLER
THAN THE MODELS HAVE SUGGESTED AS RAINFALL DURING THE DAY HAS KEPT
THE BOUNDARY STUCK IN MO EVEN THOUGH THE MODELS WANT TO PUSH IT NORTHWARD.
HOWEVER WE SHOULD HAVE A SOUTHEAST WIND SO IT SHOULD BE WARMER SO
WILL HAVE MAXIMUM TEMPERATURES IN THE MID 60S NORTH TO MID 70S SOUTH.

.LONG TERM...(MONDAY NIGHT THROUGH SUNDAY)
ISSUED AT 325 PM CDT SUN MAY 26 2013

VERY ACTIVE PATTERN WITH HEAVY RAIN THREAT ALONG WITH INCREASING
RISK FOR SIGNIFICANT SEVERE WEATHER AS THE WEEK PROGRESSES.

MONDAY NIGHT THROUGH TUESDAY NIGHT...FRONTAL BOUNDARY IN MO SHOULD
SLOWLY MAKE NORTHWARD PROGRESS ACROSS THE CWA. REPEATED ROUNDS OF
SHOWERS AND THUNDERSTORMS WILL CONTINUE WITH DECENT LOW LEVEL JET
IMPINGING ON THE FRONT. THIS WILL INCREASE THE FLASH FLOOD THREAT
EVEN MORE ALONG WITH SIGNIFICANT TO MAJOR RIVER FLOODING BECOMING
MORE LIKELY. STRONGER MID LEVEL WINDS ARRIVE ON TUESDAY AND WITH
THE WARM FRONT LIFTING ACROSS THE CWA SEVERE WEATHER MAY INCREASE
ALSO ON TUESDAY. DEEP LAYER SHEAR ESPECIALLY NEAR THE FRONT MAY
SPIN UP ISOLATED TORNADOES OTHERWISE THE MAIN THREAT WILL BE LARGE
HAIL AND DAMAGING WINDS. MUCH OF THE DVN CWA IS IN A SLIGHT RISK.
HIGHS ON TUESDAY EXPECTED TO BE IN THE 80S.

WEDNESDAY THROUGH SUNDAY...TROUGH OUT WEST REALLY SHARPENS ON
WEDNESDAY ALLOWING FOR A STRONGER SOUTHERLY FLOW PUSHING THE WARM
FRONT WELL TO OUR NORTH. WE WILL THEN BE IN THE VERY WARM BREEZY
AND JUICY AIRMASS BUT IT WILL ALSO BE CAPPED. HIGHS WILL BE WELL
INTO THE 80S WITH DEW POINTS IN THE 60S TO AROUND 70.

MAJOR TROUGH SLOWLY PUSHES EASTWARD INTO THE PLAINS/MIDWEST WITH
MODERATE TO STRONG DEEP LAYER SHEAR AS MID LEVEL WINDS INCREASE TO
60 KNOTS. COLDER AIR ALOFT/LARGE SCALE ASCENT/STRONG DIFFLUENCE ALOFT
ALL POINT TO A VERY ACTIVE SEVERE WEATHER/HEAVY RAINFALL EVENT
THURSDAY AND FRIDAY. ALL MODES OF SEVERE WEATHER...POSSIBLY SIGNIFICANT
CAN BE EXPECTED. THE COLD FRONT ASSOCIATED WITH THIS SYSTEM WILL
FINALLY PUSH TO OUR EAST BY NEXT WEEKEND.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON)
ISSUED AT 1257 PM CDT SUN MAY 26 2013

SHOWERS AND FEW STORMS WILL PUSH ACROSS AREAS NORTH OF I-80 NEXT
FEW HOURS. TO THE SOUTH...EXPECTING AT LEAST SCATTERED CONVECTION
DEVELOPING WITH HEATING. IN ADDITION...WATCHING ANOTHER BATCH OF
SHOWERS AND STORMS OVER WEST CENTRAL IOWA MOVING SOUTHEAST... AND
IF THEY HOLD TOGETHER WILL LIKELY MOVE BACK ACROSS PORTIONS OF
EASTERN IOWA AFTER 3 PM THROUGH 7 PM. IN AND NEAR PCPN EXPECT
IFR TO MVFR CONDITIONS... WHILE POTENTIAL FOR SOME VFR TO DEVELOP
OUTSIDE OF RAIN AREAS REST OF THIS AFTN. ADDITIONAL SHOWERS AND
STORMS LIKELY TO REDEVELOP THIS EVENING AND CONTINUE INTO
MONDAY...WITH DIFFICULTY IN PINNING DOWN TIMING AND IMPACT ON
TERMINALS... THUS SIMPLIFIED AND HAVE MENTION OF SHOWERS AND
STORMS AT ALL SITES AFTER 08Z THROUGH MON AM WITH IFR TO MVFR
CONDITIONS.

&&

.HYDROLOGY...
ISSUED AT 325 PM CDT SUN MAY 26 2013

HAVE EXPANDED THE FLASH FLOOD WATCH TO INCLUDE MUCH OF CWA WITH
THE EXCEPTION OF PORTIONS OF NORTHWEST ILLINOIS. RADAR ESTIMATES
AND RAINFALL REPORTS PAST 24-48 HRS SHOW WIDESPREAD 1-2 INCHES
FROM WEST OF DBQ TO QUAD CITIES TO MACOMB IL... WITH SOME SWATHS
OF 3 TO UPWARDS OF 4.5 INCHES MAINLY FAR WESTERN CWA AND IN
PORTIONS OF SOUTHEAST IOWA AND WEST CENTRAL ILLINOIS. SHORT TERM
CONVECTIVE TRENDS SUPPORT ADDITIONAL SHOWERS AND STORMS TO MOVE
ACROSS THE REGION INTO THIS EVENING. POTENTIAL LATER TONIGHT
TO SEE MORE SHOWERS AND STORMS PUSH EAST FROM THE PLAINS ACROSS THE
AREA INTO MONDAY. EACH WAVE OF PRECIPITATION WILL HAVE RISK OF VERY
HEAVY RAIN AND FLASH FLOODING GIVEN DEEP ATMOSPHERIC MOISTURE
AND REPETITIVE NATURE OF THE ACTIVITY OCCURRING ON ALREADY SATURATED
GROUND. SHORT TERM RIVER OUTLOOK FOCUSES ON IOWA TRIBUTARY RIVERS
AND THE LOWER MISSISSIPPI FOR FLOODING. DEPENDING ON RAINFALL NEXT
48 HRS COULD SEE FLOODING CATEGORIES RAISED IN SOME AREAS AND ALSO
RIVER FLOODING EXPAND INTO PORTIONS OF ILLINOIS.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH THROUGH MONDAY EVENING FOR BENTON-BUCHANAN-
     CEDAR-CLINTON-DELAWARE-DES MOINES-DUBUQUE-HENRY IA-IOWA-
     JACKSON-JEFFERSON-JOHNSON-JONES-KEOKUK-LEE-LINN-LOUISA-
     MUSCATINE-SCOTT-VAN BUREN-WASHINGTON.

IL...FLASH FLOOD WATCH THROUGH MONDAY EVENING FOR HANCOCK-HENDERSON-
     MCDONOUGH-MERCER-ROCK ISLAND-WARREN.

MO...FLASH FLOOD WATCH THROUGH MONDAY EVENING FOR CLARK-SCOTLAND.

&&

SYNOPSIS...HAASE
SHORT TERM...HAASE
LONG TERM...HAASE
AVIATION...05
HYDROLOGY...05
Hazardous weather outlook, May 26, 1:37 PM CDT, 3 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
137 PM CDT SUN MAY 26 2013

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-271845-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
137 PM CDT SUN MAY 26 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF EASTERN IOWA...
NORTHEAST MISSOURI AND WESTERN ILLINOIS THIS AFTERNOON AND TONIGHT.

REPEATED ROUNDS OF THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL THAT
MAY CAUSE FLASH FLOODING AND LEAD TO SIGNIFICANT RISES ON AREA
RIVERS. SEVERE WEATHER IS NOT EXPECTED THIS AFTERNOON OR TONIGHT.

AREA RIVERS ARE EXPERIENCING FLOODING. PLEASE SEE THE LATEST
FLOOD STATEMENTS AND FLOOD WARNINGS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A FLASH FLOOD WATCH IS IN EFFECT FOR MEMORIAL DAY FOR MUCH OF THE
OUTLOOK AREA. REPEATED ROUNDS OF THUNDERSTORMS MAY CAUSE FLASH
FLOODING AND LEAD TO SIGNIFICANT RISES ON AREA RIVERS.

MUCH OF THE OUTLOOK AREA IS IN A SLIGHT RISK FOR SEVERE THUNDERSTORMS
ON TUESDAY. THE PRIMARY THREATS ARE LARGE HAIL AND DAMAGING WINDS
BUT ISOLATED TORNADOES ARE POSSIBLE NEAR A NORTHWARD MOVING WARM FRONT.

THE POTENTIAL FOR SIGNIFICANT SEVERE WEATHER EXISTS FOR THURSDAY
AND FRIDAY AS A POTENT STORM SYSTEM AND COLD FRONT APPROACH FROM
THE WEST.

.SPOTTER INFORMATION STATEMENT...

SPOTTER REPORTS OF RAINFALL OF MORE THAN AN INCH AND ANY FLASH
FLOODING THIS AFTERNOON THROUGH MEMORIAL DAY WILL BE APPRECIATED.

A CONFERENCE CALL FOR EMERGENCY MANAGEMENT COORDINATORS WILL BE
CONDUCTED AT 215 PM THIS AFTERNOON.

HAASE

In the hours before

Local storm report, May 26, 11:35 AM CDT, 5 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1135 AM CDT SUN MAY 26 2013

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

1115 AM     HEAVY RAIN       BELLE PLAINE            41.90N 92.27W
05/26/2013  M1.03 INCH       BENTON             IA   CO-OP OBSERVER

            24 HOUR TOTAL. LATE REPORT.

1100 AM     HEAVY RAIN       W PLEASANT PLAIN        41.15N 91.86W
05/26/2013  M3.50 INCH       JEFFERSON          IA   TRAINED SPOTTER

            48 HOUR TOTAL. 24 HOUR TOTAL 2.5 INCHES.

1037 AM     HAIL             2 SW BURLINGTON         40.78N 91.15W
05/26/2013  E0.25 INCH       DES MOINES         IA   TRAINED SPOTTER

            PEA SIZED HAIL.

1030 AM     HEAVY RAIN       SWISHER                 41.84N 91.70W
05/26/2013  M1.51 INCH       JOHNSON            IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0915 AM     HEAVY RAIN       WNW COLUMBUS JUNCTION   41.28N 91.37W
05/26/2013  M1.30 INCH       LOUISA             IA   TRAINED SPOTTER

            36 HOUR TOTAL. SINCE FRIDAY NIGHT. THUNDERSTORM
            CURRENTLY.

0830 AM     HEAVY RAIN       WELLMAN                 41.47N 91.84W
05/26/2013  E1.75 INCH       WASHINGTON         IA   PUBLIC

            FACEBOOK POST. 30 HOUR TOTAL.

0804 AM     HEAVY RAIN       2 NNW NORTH LIBERTY     41.76N 91.62W
05/26/2013  M1.60 INCH       JOHNSON            IA   TRAINED SPOTTER

            36 HOUR TOTAL. 24 HOUR TOTAL WAS 1.5 INCHES.

0800 AM     HEAVY RAIN       3 ENE FORT MADISON      40.64N 91.30W
05/26/2013  M1.06 INCH       LEE                IA   COCORAHS

0800 AM     HEAVY RAIN       2 SE COAL VALLEY        41.43N 90.42W
05/26/2013  M1.09 INCH       HENRY              IL   COCORAHS

0800 AM     HEAVY RAIN       6 N FORT MADISON        40.71N 91.35W
05/26/2013  M1.72 INCH       LEE                IA   COCORAHS

0800 AM     HEAVY RAIN       7 SSW BURLINGTON        40.72N 91.17W
05/26/2013  M1.81 INCH       LEE                IA   COCORAHS

0800 AM     HEAVY RAIN       7 NNW KALONA            41.58N 91.75W
05/26/2013  M1.94 INCH       JOHNSON            IA   COCORAHS

0800 AM     HEAVY RAIN       SSW PARNELL             41.58N 92.00W
05/26/2013  M2.10 INCH       IOWA               IA   COCORAHS

0800 AM     HEAVY RAIN       1 WNW ROSEVILLE         40.74N 90.68W
05/26/2013  M1.00 INCH       WARREN             IL   COCORAHS

0800 AM     HEAVY RAIN       STRONGHURST             40.75N 90.90W
05/26/2013  M1.02 INCH       HENDERSON          IL   COCORAHS

0800 AM     HEAVY RAIN       1 WNW MACOMB            40.48N 90.70W
05/26/2013  M1.03 INCH       MCDONOUGH          IL   COCORAHS

0800 AM     HEAVY RAIN       4 NE COLCHESTER         40.47N 90.74W
05/26/2013  M1.05 INCH       MCDONOUGH          IL   COCORAHS

0800 AM     HEAVY RAIN       NW RUTLEDGE             40.31N 92.09W
05/26/2013  M2.83 INCH       SCOTLAND           MO   COCORAHS

0800 AM     HEAVY RAIN       1 SE ELY                41.86N 91.57W
05/26/2013  M1.17 INCH       LINN               IA   COCORAHS

0800 AM     HEAVY RAIN       ESE SOLON               41.81N 91.49W
05/26/2013  M1.33 INCH       JOHNSON            IA   COCORAHS

0800 AM     HEAVY RAIN       2 ENE CEDAR RAPIDS      41.98N 91.63W
05/26/2013  M1.33 INCH       LINN               IA   COCORAHS

0800 AM     HEAVY RAIN       7 N AINSWORTH           41.39N 91.55W
05/26/2013  M1.46 INCH       WASHINGTON         IA   COCORAHS

0800 AM     HEAVY RAIN       1 SSE BURLINGTON        40.80N 91.12W
05/26/2013  M1.48 INCH       DES MOINES         IA   COCORAHS

0800 AM     HEAVY RAIN       5 W AMANA               41.80N 91.96W
05/26/2013  M1.50 INCH       IOWA               IA   COCORAHS

0800 AM     HEAVY RAIN       1 ENE NORTH LIBERTY     41.75N 91.59W
05/26/2013  M1.51 INCH       JOHNSON            IA   COCORAHS

0800 AM     HEAVY RAIN       LA HARPE                40.58N 90.97W
05/26/2013  M1.15 INCH       HANCOCK            IL   CO-OP OBSERVER

            24 HOUR TOTAL.

0800 AM     HEAVY RAIN       3 NW CEDAR RAPIDS       42.00N 91.71W
05/26/2013  M1.15 INCH       LINN               IA   COCORAHS

0754 AM     HEAVY RAIN       4 S WASHINGTON          41.23N 91.67W
05/26/2013  E4.25 INCH       WASHINGTON         IA   PUBLIC

            CORRECTED LOCATION AND UPDATED TOTAL AND DETAILS.
            FACEBOOK POST RELAYED BY KWWL STORM TRACK 7. 6 HOUR
            TOTAL. POND FLOODING OVER.

0748 AM     HEAVY RAIN       WNW PARNELL             41.58N 92.01W
05/26/2013  M2.40 INCH       IOWA               IA   TRAINED SPOTTER

            24 HOUR TOTAL.

0740 AM     HEAVY RAIN       3 SE WILLIAMSBURG       41.64N 91.97W
05/26/2013  M2.22 INCH       IOWA               IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0725 AM     HEAVY RAIN       2 NNW MUSCATINE         41.44N 91.08W
05/26/2013  M1.05 INCH       MUSCATINE          IA   TRAINED SPOTTER

0723 AM     HEAVY RAIN       WASHINGTON              41.30N 91.69W
05/26/2013  M2.35 INCH       WASHINGTON         IA   CO-OP OBSERVER

0720 AM     HEAVY RAIN       NORTH ENGLISH           41.52N 92.08W
05/26/2013  M1.44 INCH       IOWA               IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0715 AM     HEAVY RAIN       3 NE MUSCATINE          41.46N 91.03W
05/26/2013  E1.00 INCH       MUSCATINE          IA   TRAINED SPOTTER

            24 HOUR RAINFALL TOTAL. RAINFALL RATES HAVE INCREASED
            WITHIN THE LAST HOUR TO BETWEEN .75 AND 1 INCH AN HOUR
            OFF AND ON. RAINFALL OVER THE PAST 48 HOURS IS 1.5
            INCHES.

0715 AM     HEAVY RAIN       1 ESE WASHINGTON        41.30N 91.68W
05/26/2013  E2.00 INCH       WASHINGTON         IA   TRAINED SPOTTER

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       IOWA CITY MUNICIPAL AIR 41.63N 91.55W
05/26/2013  M1.61 INCH       JOHNSON            IA   ASOS

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       MACOMB                  40.47N 90.68W
05/26/2013  M1.16 INCH       MCDONOUGH          IL   CO-OP OBSERVER

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       BRIGHTON                41.17N 91.82W
05/26/2013  M3.00 INCH       WASHINGTON         IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       BURLINGTON REGIONAL AIR 40.78N 91.13W
05/26/2013  M1.65 INCH       DES MOINES         IA   ASOS

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       MOUNT PLEASANT          40.96N 91.55W
05/26/2013  M2.00 INCH       HENRY              IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       CEDAR RAPIDS MUNICIPAL  41.88N 91.72W
05/26/2013  M1.33 INCH       LINN               IA   ASOS

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       MOLINE QUAD-CITY AIRPOR 41.45N 90.50W
05/26/2013  M1.02 INCH       ROCK ISLAND        IL   ASOS

            24 HOUR TOTAL.

0700 AM     HEAVY RAIN       IOWA CITY               41.66N 91.54W
05/26/2013  M1.62 INCH       JOHNSON            IA   CO-OP OBSERVER

            24 HOUR TOTAL.

0630 AM     FLASH FLOOD      4 E WHAT CHEER          41.41N 92.28W
05/26/2013                   KEOKUK             IA   TRAINED SPOTTER

            HAVE RECEIVED HEAVY RAINFALL OVERNIGHT WITH 2.5 SO FAR
            THAT HAS FALLEN. ALSO SEEING AREA CREEKS OUT OF THEIR
            BANKS AND FLOODING OR FLASH FLOODING OCCURRING. ALSO
            RECEIVED 1 OF RAINFALL YESTERDAY...SO HAVE RECEIVED 3.5
            OF RAIN OVER THE PAST TWO DAYS SO FAR. STILL GETTING
            MODERATE RAIN FALLING THIS MORNING.

0600 AM     HEAVY RAIN       GLADSTONE               40.86N 90.96W
05/26/2013  M1.35 INCH       HENDERSON          IL   CO-OP OBSERVER

            24 HOUR TOTAL.

0600 AM     HEAVY RAIN       MEMPHIS                 40.46N 92.17W
05/26/2013  M2.30 INCH       SCOTLAND           MO   CO-OP OBSERVER

            24 HOUR TOTAL.

0600 AM     HEAVY RAIN       LADORA                  41.76N 92.19W
05/26/2013  M1.45 INCH       IOWA               IA   CO-OP OBSERVER

            24 HOUR TOTAL. LATE REPORT.

&&

TP
Special weather statement, May 26, 1:33 PM CDT, 3 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
133 PM CDT SUN MAY 26 2013

IAZ040-041-051-052-063-064-262000-
BUCHANAN-DELAWARE-BENTON-LINN-IOWA-JOHNSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...VINTON...
CEDAR RAPIDS...MARENGO...IOWA CITY
133 PM CDT SUN MAY 26 2013

...STRONG GUSTY WINDS...

EAST TO SOUTHEAST WINDS WILL BECOME STRONG AND GUSTY OVER THE NEXT
1 TO 2 HOURS. THE WINDS AT TIMES WILL BE SUSTAINED AT 25 TO 35 MPH
AND GUST UP TO 50 MPH. MOTORISTS...ESPECIALLY IN HIGH PROFILE
VEHICLES ON NORTH SOUTH ROADWAYS...SHOULD BE PREPARED TO ENCOUNTER
STRONG CROSS WINDS THROUGH MID AFTERNOON.
Local storm report, May 26, 1:51 PM CDT, 3 hours 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
151 PM CDT SUN MAY 26 2013

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

0150 PM     HEAVY RAIN       SSE ATKINS              41.99N 91.86W
05/26/2013  M2.36 INCH       BENTON             IA   TRAINED SPOTTER

            48 HOUR TOTAL. 24 HOUR TOTAL WAS 1.19 INCHES.

&&

14
Local storm report, May 26, 2:39 PM CDT, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
239 PM CDT SUN MAY 26 2013

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

0236 PM     HEAVY RAIN       W BELLE PLAINE          41.90N 92.28W
05/26/2013  M1.00 INCH       BENTON             IA   TRAINED SPOTTER

            SINCE MIDNIGHT

0236 PM     HEAVY RAIN       2 W CEDAR RAPIDS        41.97N 91.71W
05/26/2013  M2.15 INCH       LINN               IA   PUBLIC

            2.15 INCHES OF RAIN FELL IN 36 HOURS WITH 0.97 INCHES OF
            THAT COMING IN 12 HOURS.

&&

DC
Special weather statement, May 26, 2:50 PM CDT, 2 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
250 PM CDT SUN MAY 26 2013

IAZ077-078-087-088-262045-
HENRY-JEFFERSON-LOUISA-WASHINGTON-
250 PM CDT SUN MAY 26 2013

...SMALL HAIL AND BRIEF TORRENTIAL RAIN...

AT 248 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LOCKRIDGE...OR 12 MILES NORTHWEST OF MOUNT
PLEASANT...MOVING NORTHEAST AT 20 MPH.

* THE THUNDERSTORM WILL BE NEAR...
  WAYLAND AROUND 305 PM CDT...
  OLDS AROUND 320 PM CDT...
  CRAWFORDSVILLE AROUND 330 PM CDT...
  WYMAN AND WINFIELD AROUND 335 PM CDT...
  COLUMBUS CITY AND 6 MILES SOUTHWEST OF COLUMBUS JUNCTION AROUND 345
  PM CDT...

SMALL HAIL UP TO ONE HALF INCH IN DIAMETER AND VERY HEAVY RAIN CAN
BE EXPECTED WITH THIS STORM. THE HEAVY RAIN WILL GREATLY REDUCE
VISIBILITIES AND PRODUCE PONDING OF WATER ON ROADS AND IN LOW-LYING
AREAS.

LAT...LON 4131 9134 4111 9126 4095 9177 4108 9187
TIME...MOT...LOC 1949Z 241DEG 17KT 4107 9172
Local storm report, May 26, 3:31 PM CDT, 1 hour 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
331 PM CDT SUN MAY 26 2013

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

0329 PM     HEAVY RAIN       1 NNE FAIRFIELD         41.02N 91.96W
05/26/2013  M1.93 INCH       JEFFERSON          IA   CO-OP OBSERVER

            24 HOUR RAINFALL TOTAL

&&

DC

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 8:34 PM CDTRiver Flood WarningDVNLee4 days
May 25, 9:14 PM CDTRiver Flood WarningDVNClinton, Scott18 days
May 25, 9:19 PM CDTRiver Flood WarningDVNJohnson, Washington5 days
May 25, 9:19 PM CDTRiver Flood WarningDVNKeokuk10 days
May 25, 9:50 PM CDTRiver Flood WarningDVNDes Moines, Louisa25 days
May 26, 3:06 AM CDTFlash Flood WatchDVNBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more56 hr
May 26, 4:29 AM CDTFlash Flood WarningDVNIowa, Keokuk, Washington6 hr
May 26, 8:41 AM CDTFlash Flood WarningDVNDes Moines, Henry, Jefferson, Louisa, Washington6 hr
May 26, 2:50 PM CDTSpecial Weather StatementDVNHenry55 min
May 26, 4:40 PM CDTFlash Flood WarningDVNCedar, Muscatine, Scott9 hr
May 26, 4:45 PM CDTFlash Flood WarningDVNJones6 hr

Nearby

Flash Flood Warnings in Iowa, 2013Every flash flood warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.