Alert archive / Iowa / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 94, NWS Quad Cities, IA

June 24, 20139 counties in Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 24, 2013, 2:42 PM CDT for 9 counties in Iowa. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 24, 2013, 2:42 PM CDT (19:42 UTC)
Expired: Jun 24, 2013, 3:30 PM CDT
In force: 48 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Johnson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Van Buren County, IA, Washington County, IA

The radar

The Quad Cities radar (KDVN), 97 km from the middle of the area, began a volume at 19:46 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 24, 12:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 270 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: 1763 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 947 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -56 m²/s²
0-3 km storm-relative helicity: -54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 24, 1:01 PM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jun 24, 1:01 PM CDT, 1 hour 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
101 PM CDT MON JUN 24 2013

.SYNOPSIS...
ISSUED AT 445 AM CDT MON JUN 24 2013

CONVECTION HAS DEVELOPED ACROSS THE NE HALF OF THE CWFA EARLY THIS
AM.  A STATIONARY FRONT IS DRAPED ACROSS THE NE/KS BORDER TO NORTH
CENTRAL MO BEFORE DIPPING SOUTHWARD.  ADDITIONAL STORMS ARE FOUND
ACROSS CENTRAL IOWA AND FURTHER UPSTREAM A BOWING LINE OF STORMS IS
FOUND ACROSS CENTRAL NE.

&&

.SHORT TERM...(TODAY AND TONIGHT)
ISSUED AT 445 AM CDT MON JUN 24 2013

MAIN FOCUS WAS ON THE SHORT TERM THUNDERSTORM CHANCES AND HEAVY RAIN
THREAT AREAS TODAY.  THE CONVECTIVE AREAS ACROSS NE AND CENTRAL IA
WILL TRACK EASTWARD EVENTUALLY ACROSS THE CWFA.  AREAS ALONG AND
NORTH OF I80 WILL HAVE THE BEST CHANCES AT SEEING THE REPEATED
ROUNDS OF  THUNDERSTORMS.  EACH THUNDERSTORM HAS THE POTENTIAL TO
PRODUCE VERY HEAVY RAINS OF 1 TO 2 INCHES. THAT WITH REPEATED ROUNDS
OF THUNDERSTORMS SOME AREAS COULD SEE 2 TO 4 INCHES WITH LOCALLY
EVEN HIGHER AMOUNTS.  DROPPED THE SOUTHERN TIER OF COUNTIES FROM THE
FLASH FLOOD WATCH...WITH THE FOCUS MORE DEFINED TO BE ALONG AND
NORTH OF I80.

.LONG TERM...(TUESDAY THROUGH SUNDAY)
ISSUED AT 445 AM CDT MON JUN 24 2013

NOT MUCH CHANGE TO THE EXTENDED FORECAST.  RAIN CHANCES REMAIN IN
THE FORECAST...ESPECIALLY ACROSS THE NORTHERN HALF OF THE CWFA
THROUGH WED NIGHT/THURSDAY WHEN A COLD FRONT MOVES THROUGH.
RELATIVELY QUIET WEATHER THURSDAY THROUGH SUNDAY.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z TUESDAY AFTERNOON)
ISSUED AT 1250 PM CDT MON JUN 24 2013

UNSETTLED AFTERNOON TO SAY THE LEAST FOR THE TERMINALS. CID...DBQ
AND MLI ALL TO GET ROUNDS OF THUNDERSTORMS AND BOUTS OF MVFR TO
IFR CONDITIONS AS THEY/STORMS PASS FROM NOW THROUGH 20Z. THEN A ROUND OF
STRONG TO SVR STORMS TO IMPACT CID...DBQ AND BRL FROM 20Z-01Z OR
SO FROM THE WEST. STRONG VARIABLE WINDS POSSIBLE IN VCNTY OF ALL
TERMINALS WITH THE STORMS THROUGH 00Z TONIGHT. HEAVY RAIN
OCCASIONALLY REDUCING VSBYS TO UNDER A MILE AT TIMES AS WELL THIS
AFTERNOON. HARD TO TIME MVFR TO VFR WINDOWS BETWEEN THE STORMS.
MORE NOCTURNAL STORMS POSSIBLE AGAIN LATER TONIGHT AFTER A MID
EVENING LULL.    ..12..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR BENTON-
     BUCHANAN-CEDAR-CLINTON-DELAWARE-DUBUQUE-IOWA-JACKSON-
     JOHNSON-JONES-KEOKUK-LINN-LOUISA-MUSCATINE-SCOTT-WASHINGTON.

IL...FLASH FLOOD WATCH UNTIL 7 PM CDT THIS EVENING FOR BUREAU-CARROLL-
     HENRY IL-JO DAVIESS-MERCER-PUTNAM-ROCK ISLAND-STEPHENSON-
     WHITESIDE.

MO...NONE.
&&

SYNOPSIS...14
SHORT TERM...14
LONG TERM...14
AVIATION...12

Hazardous weather outlook, Jun 24, 7:12 AM CDT, 7 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
712 AM CDT MON JUN 24 2013

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-251215-
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-
712 AM CDT MON JUN 24 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...TODAY AND TONIGHT

SEVERAL ROUNDS OF THUNDERSTORMS WILL MOVE ALONG AND NORTH OF THE
INTERSTATE 80 CORRIDOR THROUGH MUCH OF THE DAY. RAINFALL TOTALS
OF 2 TO LOCALLY OVER 6 INCHES WILL BE LIKELY. AMOUNTS OVER 3
INCHES WILL RESULT IN FLASH FLOODING OF URBAN AREAS AS WELL AS
LOW SPOTS...CREAKS...AND TRIBUTARY RIVERS.

FLASH FLOOD WARNINGS ARE IN EFFECT FOR PARTS OF THE AREA.
A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS NORTH OF A LINE FROM
OTTUMWA IOWA...TO GALESBURG ILLINOIS...TO LA SALLE ILLINOIS.

SOME OF THE STRONGER THUNDERSTORMS TODAY MAY SURPASS SEVERE LIMITS
PRODUCING QUARTER SIZED HAIL OR LARGE OR DAMAGING WINDS OF 60 MPH
OR MORE.

THE STORM PREDICTION CENTER HAS THE ENTIRE AREA IN A SLIGHT RISK
FOR SEVERE STORMS.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ADDITIONAL STORMS ARE EXPECTED TUESDAY THROUGH WEDNESDAY NIGHT.
ANY ADDITIONAL HEAVY RAINS WILL ONLY AGGRAVATE ANY ONGOING
FLOODING CONCERNS OR MAY CREATE NEW ONES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH LATE THIS AFTERNOON.
REPORTS OF HEAVY RAINFALL OVER 1 INCH AND ANY FLOODING ISSUES
WOULD BE APPRECIATED.

14

In the hours before

Local storm report, Jun 24, 2:27 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
227 PM CDT MON JUN 24 2013

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

0224 PM     HAIL             2 S FAIRFIELD           40.98N 91.96W
06/24/2013  M0.50 INCH       JEFFERSON          IA   TRAINED SPOTTER

0224 PM     TSTM WND DMG     2 S FAIRFIELD           40.98N 91.96W
06/24/2013                   JEFFERSON          IA   TRAINED SPOTTER

            SNAPPED OFF TREE TOPS WITH SEVERAL BRANCHES DOWN.

&&

GROSS

Local storm report, Jun 24, 2:30 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
230 PM CDT MON JUN 24 2013

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

0229 PM     TSTM WND DMG     W MEMPHIS               40.46N 92.17W
06/24/2013                   SCOTLAND           MO   TRAINED SPOTTER

            2 INCH DIAMETER LIMBS DOWN. WINDS ESTIMATED 50 MPH. POWER
            JUST WENT OUT.

&&

DLS

Local storm report, Jun 24, 2:35 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
235 PM CDT MON JUN 24 2013

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

0234 PM     TSTM WND DMG     W MEMPHIS               40.46N 92.17W
06/24/2013                   SCOTLAND           MO   TRAINED SPOTTER

            3 FOOT DIAMETER TREE DOWN.

&&

DLS

Local storm report, Jun 24, 2:36 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
236 PM CDT MON JUN 24 2013

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

0235 PM     HEAVY RAIN       1 W BETTENDORF          41.56N 90.49W
06/24/2013  M3.13 INCH       SCOTT              IA   TRAINED SPOTTER

            TOTAL FOR TODAY SO FAR.

&&

DLS

Local storm report, Jun 24, 2:39 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
239 PM CDT MON JUN 24 2013

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

0235 PM     TSTM WND GST     5 E CANTRIL             40.64N 91.98W
06/24/2013  E60 MPH          VAN BUREN          IA   TRAINED SPOTTER

            ESTIMATED 50 TO 60 MPH WINDS.

&&

GROSS

Local storm report, Jun 24, 2:41 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
241 PM CDT MON JUN 24 2013

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

0237 PM     TSTM WND DMG     3 NNE FAIRFIELD         41.05N 91.95W
06/24/2013                   JEFFERSON          IA   TRAINED SPOTTER

            SEVERAL 3 INCH TREE LIMBS DOWN OF AN ASH TREE WITH THE
            STORMS.

&&

GROSS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 9:32 PM CDT	Special Weather Statement	DVN	Jefferson	58 min
Jun 23, 9:43 PM CDT	River Flood Warning	DVN	Louisa	17 days
Jun 23, 9:43 PM CDT	River Flood Warning	DVN	Des Moines, Louisa	18 days
Jun 23, 9:54 PM CDT	Special Weather Statement	DVN	Jefferson	51 min
Jun 23, 10:02 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson	43 min
Jun 24, 1:19 AM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	41 min
Jun 24, 4:29 AM CDT	Flash Flood Warning	DVN	Cedar, Clinton, Johnson, Jones, Linn, Scott	9 hr
Jun 24, 6:09 AM CDT	Flash Flood Warning	DVN	Clinton, Scott	6 hr
Jun 24, 7:02 AM CDT	Flash Flood Warning	DVN	Cedar, Muscatine, Scott	6 hr
Jun 24, 9:50 AM CDT	Flash Flood Warning	DVN	Cedar, Iowa, Johnson, Muscatine	6 hr
Jun 24, 10:45 AM CDT	River Flood Warning	DVN	Cedar, Louisa, Muscatine	10 days
Jun 24, 10:45 AM CDT	River Flood Warning	DVN	Louisa	11 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Dubuque	8 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Dubuque, Jackson	8 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Clinton	8 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Clinton, Scott	10 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Scott	10 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Muscatine, Scott	13 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Muscatine	14 days
Jun 24, 11:29 AM CDT	River Flood Warning	DVN	Louisa, Muscatine	15 days
Jun 24, 12:33 PM CDT	Special Weather Statement	DVN	Scott	57 min
Jun 24, 1:18 PM CDT	Tornado Warning	DVN	Iowa, Keokuk	27 min
Jun 24, 1:29 PM CDT	Areal Flood Warning	DVN	Cedar, Clinton, Johnson, Jones, Linn, Scott	12 hr
Jun 24, 1:53 PM CDT	Special Weather Statement	DVN	Iowa, Johnson, Keokuk, Washington	52 min
Jun 24, 2:10 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Lee, Van Buren, Washington	50 min
Jun 24, 2:24 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Keokuk, Linn, Washington	51 min
Jun 24, 2:29 PM CDT	Severe Thunderstorm Warning	DVN	Lee, Van Buren	46 min
Jun 24, 2:35 PM CDT	Tornado Warning	DVN	Iowa, Johnson, Linn	25 min
Jun 24, 2:42 PM CDT	Tornado Warning	DVN	Henry, Louisa, Washington	33 min
Jun 24, 2:52 PM CDT	Tornado Warning Tornado observed	DVN	Cedar, Johnson, Jones, Linn	23 min
Jun 24, 3:07 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Des Moines, Lee, Louisa, Muscatine and 1 more	38 min
Jun 24, 3:14 PM CDT	Tornado Warning Tornado observed	DVN	Cedar, Clinton, Jackson, Jones	46 min
Jun 24, 3:20 PM CDT	Tornado Warning	DVN	Muscatine, Scott	25 min
Jun 24, 3:35 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	40 min
Jun 24, 3:45 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	45 min
Jun 24, 3:50 PM CDT	Tornado Warning	DVN	Clinton, Scott	40 min
Jun 24, 4:15 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	45 min
Jun 24, 10:34 AM CDT	River Flood Warning	DVN	Stephenson	10 days
Jun 24, 10:34 AM CDT	River Flood Warning	DVN	Henry, Rock Island, Whiteside	15 days
Jun 24, 10:34 AM CDT	River Flood Warning	DVN	Henry, Rock Island	12 days
Jun 24, 2:51 PM CDT	River Flood Warning	DVN	Henry	3 days
Jun 24, 3:47 PM CDT	Tornado Warning	DVN	Henry, Rock Island, Whiteside	43 min
Jun 24, 3:47 PM CDT	Tornado Warning	DVN	Bureau, Henry, Whiteside	28 min
Jun 24, 4:09 PM CDT	Tornado Warning	DVN	Bureau, Henry	36 min
Jun 24, 4:14 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry, Putnam	46 min
Jun 24, 4:36 PM CDT	Severe Thunderstorm Warning	DVN	Bureau	24 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2013 Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.