Alert archive / Iowa / Flash Flood Warnings in 2008

Flash Flood Warning 37, NWS Des Moines, IA

June 5, 2008Black Hawk County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 5, 2008, 2:09 AM CDT for Black Hawk County, Iowa. It was in force for 6 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: Jun 5, 2008, 2:09 AM CDT (07:09 UTC)
Expired: Jun 5, 2008, 8:15 AM CDT
In force: 6 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

County Black Hawk County, IA

The radar

The Des Moines radar (KDMX), 151 km from the middle of the area, began a volume at 07:12 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 00:00Z, 7.2 hours before the alert went out and 172 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1408 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KDMX 050711
FFWDMX
IAC013-051315-
/O.NEW.KDMX.FF.W.0037.080605T0709Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
209 AM CDT THU JUN 5 2008

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BLACK HAWK COUNTY IN NORTHEAST IOWA...
  THIS INCLUDES THE CITY OF WATERLOO...

* UNTIL 815 AM CDT

* AT 207 AM CDT...VERY HEAVY RAIN WAS REPORTED FROM A THUNDERSTORM
  OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUDSON...
  EVANSDALE AND CEDAR FALLS

FLASH FLOODING WILL BE ESPECIALLY LIKELY ALONG THE WOLFE CREEK 
AROUND LA PORTE CITY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 0709Z 180DEG 0KT 4241 9230

$$

RUSSELL

7 follow-up statements

000 
WGUS73 KDMX 050804
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
302 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
302 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 259 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WATERLOO...HUDSON...EVANSDALE AND CEDAR FALLS.

FLOODING ALONG THE WOLFE  NEAR LA PORTE CITY IS POSSIBLE. 

ADDITIONAL RAINFALL AMOUNTS OF ONE HALF INCH IS POSSIBLE IN THE 
WARNED AREA THROUGH 4AM. AFTER 4 AM...EVEN MORE VERY HEAVY RAIN 
PRODUCING THUNDERSTORMS MAY BE POSSIBLE ACROSS THE AREA. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT THURSDAY MORNING
FOR IOWA.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 0802Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 050903
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
401 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
401 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 356 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE STEADY MODERATE TO AT TIMES HEAVY RAINFALL...AGGRAVATING 
EARLIER FLASH FLOODING THAT OCCURRED OVER THE WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
WATERLOO...HUDSON...EVANSDALE AND CEDAR FALLS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE 
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CDT THURSDAY MORNING
FOR IOWA.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 0901Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 051029
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
528 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
528 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 522 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATERLOO...
HUDSON...EVANSDALE AND CEDAR FALLS

ADDITIONAL RAINFALL AMOUNTS WILL BE LIGHT...HOWEVER RUNOFF 
CONTINUES TOP AGGRAVATE FLOODING OVER THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 1028Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 051118
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
618 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
618 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 613 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A RAINFALL AGGRAVATING FLASH FLOODING OVER THE WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATERLOO...
HUDSON...EVANSDALE AND CEDAR FALLS

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 1118Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 051146
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
646 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
646 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 644 AM CDT...MODERATE RAINFALL AGGRAVATING LAST NIGHTS FLASH 
FLOODING WAS OCCURRING OVER THE WARNED AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATERLOO...
HUDSON...EVANSDALE AND CEDAR FALLS

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 1146Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 051242
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
740 AM CDT THU JUN 5 2008

IAC013-051315-
/O.CON.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
740 AM CDT THU JUN 5 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 AM CDT FOR BLACK
HAWK COUNTY...

AT 735 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED NO KNOWN 
AREAS OF FLASH FLOODING OVER THE WARNED AREA. HOWEVER...SOME AREAS 
MAY BECOME EVIDENT THIS MORNING. RAINFALL IN EXCESS OF THREE INCHES 
FELL OVERNIGHT WHICH LIKELY CAUSED SOME CREEKS TO FLOOD RURAL COUNTY 
ROADS.  

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATERLOO...
HUDSON...EVANSDALE AND CEDAR FALLS

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 1240Z 180DEG 0KT 4241 9230

$$

RUSSELL

000 
WGUS73 KDMX 051315
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
815 AM CDT THU JUN 5 2008

IAC013-051325-
/O.EXP.KDMX.FF.W.0037.000000T0000Z-080605T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK IA-
815 AM CDT THU JUN 5 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR BLACK HAWK COUNTY...

LAT...LON 4264 9209 4247 9209 4247 9207 4230 9207
      4230 9254 4264 9255
TIME...MOT...LOC 1242Z 180DEG 0KT 4241 9230

$$

RUSSELL

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 Des Moines, IA wrote its last area forecast discussion before this flash flood warning went out at Jun 4, 3:14 PM CDT, 10 hours 55 minutes earlier.

Area forecast discussion, Jun 4, 3:14 PM CDT, 10 hours 55 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
314 PM CDT WED JUN 4 2008

...UPDATED AVIATION DISCUSSION AND WATCHES IN EFFECT...

.SHORT TERM/TONIGHT...
FOCUS TONIGHT REMAINS ON SEVERE AND HEAVY RAIN POTENTIAL. WARM FRONT
HAS LIFTED SLOWLY NORTH TO NEAR THE IA/MO BORDER. GREATEST
INSTABILITY CURRENTLY IS TO THE SOUTHWEST IN NORTH CENTRAL KANSAS
AND SOUTHEAST NEBRASKA. LACK OF 0-3 KM CAPE IN SOUTHERN IOWA NEAR
THE WARM FRONT SUGGESTS THAT SFC BASED CONVECTION IS STILL SEVERAL
HOURS OFF IN IA. ONCE CONVECTION DOES BEGIN ALL MODES OF SVR WX ARE
POSSIBLE NEAR THE FRONTAL BOUNDARY. LATER TONIGHT THE LOW LEVEL JET
WILL FOCUS INTO THE STATE AND WILL CONTINUE TO FUEL THUNDERSTORMS
NEAR THE WARM FRONT AS IT LIFTS NORTH OVER IA. AREAS OF HEAVY
RAINFALL REMAIN POSSIBLE BUT THE FORWARD PROPAGATION OF THE STORMS
SHOULD LIMIT POTENTIAL. WILL EXPAND FLASH FLOOD WATCH NORTH TO
HIGHWAY 20 WHERE 1 TO 2 INCHES OF RAINFALL IN A SHORT PERIOD WILL
CAUSE HYDROLOGIC ISSUES GIVEN RECENT HEAVY RAINS.

.LONG TERM /THURSDAY-WEDNESDAY/...
ACTIVE PATTERN CONTINUES THROUGH MUCH OF THE FORECAST PERIOD.
NUMEROUS VIGOROUS WAVES WILL MOVE THROUGH THE FLOW DURING THE PERIOD
WHILE THE MIDWEST REMAINS CONNECTED TO THE MIDWEST. ONGOING ELEVATED
CONVECTION LIKELY ONGOING AT THE START OF THE PERIOD IN ADVANCED OF
A WARM FRONT LIFTING THROUGH THE STATE. MARGINAL SEVERE WX AND
LOCALLY HEAVY RAINFALL POSSIBLE THURSDAY MORNING HOWEVER THE BIG
SHOW STILL ON TARGET FOR THURSDAY EVENING AND OVERNIGHT. THE PRIMARY
SEVERE EVENT LIKELY TO BEGIN AFTER 00Z THURSDAY EVENING THEN TURNING
INTO A COMBINATION SEVERE AND HEAVY RAIN EVENT AFTER MIDNIGHT.
TONIGHTS RAINFALL WILL LIKELY BE A PRIMER FOR THURSDAY NIGHT.
HYDROLOGY CONCERNS WILL GREATLY INCREASE IF CENTRAL IOWA GETS ONE
INCH PLUS TONIGHT WITH THE POTENTIAL FOR A NORTH TO SOUTH 2 TO 4
INCH BAND THURSDAY NIGHT. ALL MODES FOR SEVERE WEATHER ARE LIKELY
WITH THE TORNADIC POTENTIAL ENHANCED WEST OF INTERSTATE 35. PWATS
APPROACHING 2 INCHES WITH A 60 KT LOW LEVEL JET FEEDING INTO THE
REGION WILL PROMOTE THE POTENTIAL FOR EFFICIENT RAIN PRODUCERS.
STORM MOVEMENT ALONG THE BOUNDARY SUGGESTS TRAINING POTENTIAL.

THUNDERSTORMS WILL LINGER FRIDAY MORNING THEN ANOTHER CHANCE OVER
THE EAST IN THE AFTERNOON. A BRIEF BREAK FRIDAY NIGHT AND EARLY
SATURDAY THEN THE NEXT SYSTEM BRINGS THUNDERSTORM POTENTIAL BACK BY
SATURDAY AFTERNOON AND NIGHT. POSSIBLE THAT THE WARM FRONT WILL HANG
UP OVER IOWA LEADING TO A PROLONGED THUNDERSTORM CHANCE THROUGH
MONDAY BEFORE FINALLY PUSHING TO THE NORTH BY MIDWEEK.

&&

.AVIATION 05/06Z...
THUNDERSTORMS CONTINUE OVER MUCH OF THE AREA...AFFECTING KDSM AND
KMCW...AND VERY NEAR KALO AT THIS TIME. KOTM REMAINS SOUTHEAST OF
THE ACTION BUT WILL PROBABLY GET HIT AT SOME TIME DURING THE EARLY
MORNING HOURS. THUNDERSTORMS NOT EXPECTED TO END UNTIL CLOSE TO
12Z...AFTER WHICH MVFR CIGS AND PERHAPS SOME BR/HZ WILL LINGER INTO
THE MID/LATE MORNING HOURS. ANOTHER ROUND OF THUNDERSTORMS WILL
ENTER THE PICTURE THURS EVENING/NIGHT.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
TORNADO WATCH TIL 10Z THURSDAY ALONG AND SOUTH OF HIGHWAY 3. FLASH
FLOOD WATCH TIL 12Z THURSDAY ALONG AND SOUTH OF HIGHWAY 20.

SHORT TERM...REV
LONG TERM...DONAVON
AVIATION...LEE

Hazardous weather outlook, Jun 4, 10:36 PM CDT, 3 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
1036 PM CDT WED JUN 4 2008

IAZ044>050-057>062-070>075-081>086-092>097-051115-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
1036 PM CDT WED JUN 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BE LIKELY TONIGHT. LARGE HAIL...DAMAGING WIND
AND ISOLATED TORNADOES WILL BE POSSIBLE. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING. A TORNADO WATCH IS IN EFFECT UNTIL MIDNIGHT CDT
AND A FLASH FLOOD WATCH IS IN EFFECT THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF THUNDERSTORMS WILL CONTINUE INTO FRIDAY. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. A
SIGNIFICANT SEVERE WEATHER OUTBREAK IS POSSIBLE THURSDAY AFTERNOON
AND NIGHT. THUNDERSTORM CHANCES WILL RETURN SATURDAY AFTERNOON THROUGH
SUNDAY AND POSSIBLY INTO EARLY NEXT WEEK. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FROM TIME TO TIME THROUGH THE END OF
THE WEEK.

IAZ004>007-015>017-023>028-033>039-051115-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
1036 PM CDT WED JUN 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BE LIKELY TONIGHT. LARGE HAIL...DAMAGING WIND
AND ISOLATED TORNADOES WILL BE POSSIBLE. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING. A FLASH FLOOD WATCH IS IN EFFECT THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF THUNDERSTORMS WILL CONTINUE INTO FRIDAY. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. A
SIGNIFICANT SEVERE WEATHER OUTBREAK IS POSSIBLE THURSDAY AFTERNOON
AND NIGHT. THUNDERSTORM CHANCES WILL RETURN SATURDAY AFTERNOON THROUGH
SUNDAY AND POSSIBLY INTO EARLY NEXT WEEK. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FROM TIME TO TIME THROUGH THE END OF
THE WEEK.

LEE

In the hours before

Local storm report, Jun 5, 1:18 AM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
118 AM CDT THU JUN 05 2008

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

0115 AM     FLASH FLOOD      MASSENA                 41.25N 94.77W
06/05/2008                   CASS               IA   LAW ENFORCEMENT

            CASS COUNTY SHERRIFF OFFICE REPORTS HIGHWAY 92 NOW CLOSED
            ON WEST EDGE OF MASSENA DUE TO WATER OVER THE BRIDGE.

&&

LEE

Local storm report, Jun 5, 1:25 AM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
125 AM CDT THU JUN 05 2008

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

0125 AM     HEAVY RAIN       PLAINFIELD              42.84N 92.54W
06/05/2008  M1.26 INCH       BREMER             IA   TRAINED SPOTTER

            MEASURED IN 25 MINUTES.

&&

MRUSSELL

Local storm report, Jun 5, 1:34 AM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
134 AM CDT THU JUN 05 2008

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

0132 AM     FLASH FLOOD      4 S CUMBERLAND          41.22N 94.87W
06/05/2008                   CASS               IA   LAW ENFORCEMENT

            WATER DAMAGE TO A BRIDGE. COUNTY HIGHWAY 28 CLOSED SOUTH
            OF HIGHWAY 92. DAMAGED BRIDGE IS 3 MILES SOUTH OF
            HIGHWAY92.

&&

MRUSSELL

Local storm report, Jun 5, 1:50 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
150 AM CDT THU JUN 05 2008

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

0112 AM     TSTM WND DMG     5 SE COLLINS            41.86N 93.24W
06/05/2008                   JASPER             IA   EMERGENCY MNGR

            2.5 FOOT DIAMETER TREE UPROOTED.

&&

PODRAZIK

Local storm report, Jun 5, 1:56 AM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
156 AM CDT THU JUN 05 2008

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

0148 AM     TSTM WND GST     MARSHALLTOWN            42.04N 92.91W
06/05/2008  M68 MPH          MARSHALL           IA   MESONET

            RWIS STATION ON HIGHWAY 30 IN MARSHALLTOWN MEASURED WIND
            GUST TO 59 KNOTS.

&&

LEE

Local storm report, Jun 5, 2:09 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
209 AM CDT THU JUN 05 2008

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

0107 AM     TSTM WND DMG     PRAIRIE CITY            41.60N 93.24W
06/05/2008                   JASPER             IA   BROADCAST MEDIA

            2 FOOT DIAMETER TREE DOWN ON HOME AND CAR

&&

BSMALL

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 7:30 PM CDT	Tornado Warning	DMX	Clarke, Union	30 min
Jun 4, 7:33 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	57 min
Jun 4, 7:41 PM CDT	Tornado Warning	DMX	Adams, Taylor	49 min
Jun 4, 8:00 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	31 min
Jun 4, 8:25 PM CDT	Flash Flood Warning	DMX	Adams, Union	9 hr
Jun 4, 8:27 PM CDT	Tornado Warning	DMX	Adams	48 min
Jun 4, 8:50 PM CDT	Tornado Warning	DMX	Ringgold, Taylor, Union	55 min
Jun 4, 9:12 PM CDT	Severe Thunderstorm Warning	DMX	Sac	48 min
Jun 4, 9:15 PM CDT	Tornado Warning	DMX	Adams	14 min
Jun 4, 9:38 PM CDT	Tornado Warning	DMX	Clarke, Union	52 min
Jun 4, 9:48 PM CDT	Tornado Warning	DMX	Union	16 min
Jun 4, 10:04 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin	41 min
Jun 4, 10:10 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	50 min
Jun 4, 10:22 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	53 min
Jun 4, 10:23 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster, Wright	41 min
Jun 4, 10:28 PM CDT	Tornado Warning	DMX	Clarke, Madison, Warren	47 min
Jun 4, 10:44 PM CDT	Flash Flood Warning	DMX	Clarke, Madison, Warren	6 hr
Jun 4, 10:47 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	38 min
Jun 4, 10:52 PM CDT	Flash Flood Warning	DMX	Adair, Cass	11 hr
Jun 4, 10:58 PM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	47 min
Jun 4, 11:08 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	52 min
Jun 4, 11:10 PM CDT	Flash Flood Warning	DMX	Hamilton, Hardin, Webster	6 hr
Jun 4, 11:10 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Taylor, Union	50 min
Jun 4, 11:12 PM CDT	Flash Flood Warning	DMX	Franklin, Humboldt, Wright	6 hr
Jun 4, 11:13 PM CDT	Severe Thunderstorm Warning	DMX	Sac	47 min
Jun 4, 11:34 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Clarke, Madison, Union	41 min
Jun 4, 11:45 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Wright	45 min
Jun 5, 12:11 AM CDT	Flash Flood Warning	DMX	Butler	6 hr
Jun 5, 12:17 AM CDT	Severe Thunderstorm Warning	DMX	Madison, Warren	43 min
Jun 5, 12:18 AM CDT	Severe Thunderstorm Warning	DMX	Butler	42 min
Jun 5, 12:33 AM CDT	Areal Flood Advisory	DMX	Emmet, Kossuth, Palo Alto	4 hr
Jun 5, 12:35 AM CDT	Areal Flood Advisory	DMX	Cerro Gordo, Hancock, Winnebago, Worth	4 hr
Jun 5, 12:35 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	40 min
Jun 5, 12:48 AM CDT	Areal Flood Advisory	DMX	Dallas, Madison, Polk, Warren	4 hr
Jun 5, 12:50 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	40 min
Jun 5, 12:59 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	46 min
Jun 5, 1:05 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy	40 min
Jun 5, 1:14 AM CDT	Tornado Warning	DMX	Jasper, Marshall, Story	31 min
Jun 5, 1:19 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Madison, Ringgold, Union	41 min
Jun 5, 1:39 AM CDT	Areal Flood Advisory	DMX	Black Hawk, Bremer	4 hr
Jun 5, 1:40 AM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	35 min
Jun 5, 1:44 AM CDT	Flash Flood Warning	DMX	Adams, Ringgold, Taylor, Union	6 hr
Jun 5, 1:48 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall	11 min
Jun 5, 1:51 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	39 min
Jun 5, 2:02 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	43 min
Jun 5, 2:12 AM CDT	River Flood Warning	DMX	Humboldt	39 hr
Jun 5, 2:12 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur	43 min
Jun 5, 2:26 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Marion, Warren	49 min
Jun 5, 2:31 AM CDT	River Flood Warning	DMX	Madison, Warren	11 days
Jun 5, 2:33 AM CDT	Tornado Warning	DMX	Clarke, Lucas	21 min
Jun 5, 3:43 AM CDT	River Flood Warning	DMX	Webster	24 hr
Jun 5, 4:17 AM CDT	Flash Flood Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	24 hr
Jun 5, 4:45 AM CDT	Areal Flood Warning	DMX	Madison	12 hr
Jun 5, 4:50 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Wapello	25 min
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Emmet	23 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Palo Alto	5 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Hamilton, Webster	25 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Madison, Warren	66 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Cerro Gordo, Floyd, Worth	29 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Black Hawk, Bremer, Butler	36 hr
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Black Hawk	15 days
Jun 5, 4:51 AM CDT	River Flood Warning	DMX	Marshall	13 days
Jun 5, 5:19 AM CDT	Areal Flood Warning	DMX	Butler, Franklin, Hamilton, Hardin, Webster, Wright	25 hr
Jun 5, 5:38 AM CDT	River Flood Warning	DMX	Taylor	4 hr
Jun 5, 5:45 AM CDT	Areal Flood Warning	DMX	Adams, Union	49 hr
Jun 5, 7:45 AM CDT	River Flood Warning	DMX	Lucas	5 days
Jun 5, 8:23 AM CDT	River Flood Warning	DMX	Decatur	4 days
Jun 5, 10:02 AM CDT	River Flood Warning	DMX	Black Hawk, Butler	10 days
Jun 5, 4:05 PM CDT	River Flood Warning	DMX	Black Hawk	13 days
Jun 5, 4:32 PM CDT	River Flood Warning	DMX	Warren	17 hr
Jun 5, 4:32 PM CDT	River Flood Warning	DMX	Mahaska, Marion	11 hr
Jun 5, 4:34 PM CDT	River Flood Warning	DMX	Polk	40 hr
Jun 5, 4:44 PM CDT	Areal Flood Warning	DMX	Madison	11 hr
Jun 5, 6:01 PM CDT	River Flood Warning	DMX	Wapello	15 hr

Nearby

Flash Flood Warnings in Iowa, 2008 Every flash flood warning in 2008

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.