Alert archive / Iowa / Tornado Warnings in 2014
Tornado Warning 53, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jul 6, 2014, 9:10 PM CDT for Jasper County, Mahaska County, Poweshiek County, Iowa. It was in force for 35 min. 2 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
- Jul 6, 2014, 9:10 PM CDT (02:10 UTC)
- Expired
- Jul 6, 2014, 9:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Jasper County, IA, Mahaska County, IA, Poweshiek County, IA
The radar
The Des Moines radar (KDMX), 78 km from the middle of the area, began a volume at 02:10 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 9:10 PM CDT | TORNADO | Kellogg, IA | LAW ENFORCEMENT RELAYED PUBLIC REPORTS FROM GILMAN SEEING A TORNADO ON THE GROUND TO THEIR SOUTH...RADAR INDICATES IT WOULD BE IN THE KELLOGG AREA. |
| Jul 6, 9:19 PM CDT | HAIL 1 | 1 W Grinnell, IA | TRAINED SPOTTER REPORTED 1 INCH DIAMETER HAIL 1 W GRINNELL. DELAYED REPORT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.2 hours before the alert went out and 191 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.
- Mixed-layer CAPE
- 1325 J/kg
- Mixed-layer CIN
- -174 J/kg
- Mixed-layer LCL
- 1280 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.9
The text
As transmitted, in the capitals the NWS used until 2016.
547
WFUS53 KDMX 070210
TORDMX
IAC099-123-157-070245-
/O.NEW.KDMX.TO.W.0053.140707T0210Z-140707T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
910 PM CDT SUN JUL 6 2014
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN MAHASKA COUNTY IN SOUTH CENTRAL IOWA...
EASTERN JASPER COUNTY IN CENTRAL IOWA...
SOUTHWESTERN POWESHIEK COUNTY IN CENTRAL IOWA...
* UNTIL 945 PM CDT
* AT 909 PM CDT...A CONFIRMED TORNADO WAS LOCATED 4 MILES WEST OF
ROCK CREEK LAKE...OR 6 MILES NORTHEAST OF NEWTON...MOVING SOUTHEAST
AT 25 MPH.
HAZARD...DAMAGING TORNADO.
SOURCE...PUBLIC CONFIRMED TORNADO. AT 900 PM A TORNADO WAS
REPORTED 5 MILES NORTH OF NEWTON.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* LOCATIONS IMPACTED INCLUDE...
NEWTON...GRINNELL...MONTEZUMA...ROCK CREEK LAKE...IOWA SPEEDWAY...
SULLY...KELLOGG...LYNNVILLE...OAKLAND ACRES...SEARSBORO...GRINNELL
REGIONAL AIRPORT AND ROCK CREEK STATE PARK.
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 167 AND 187.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4140 9280 4173 9306 4184 9287 4160 9248
TIME...MOT...LOC 0209Z 321DEG 22KT 4175 9293
TORNADO...OBSERVED
HAIL...<.75IN
$$
AWB2 follow-up statements
279
WWUS53 KDMX 070229
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
929 PM CDT SUN JUL 6 2014
IAC099-123-157-070245-
/O.CON.KDMX.TO.W.0053.000000T0000Z-140707T0245Z/
MAHASKA IA-JASPER IA-POWESHIEK IA-
929 PM CDT SUN JUL 6 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
NORTHWESTERN MAHASKA...SOUTHEASTERN JASPER AND SOUTHWESTERN POWESHIEK
COUNTIES...
AT 928 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 5 MILES SOUTH OF ROCK CREEK LAKE...OR 7 MILES SOUTHWEST
OF GRINNELL...MOVING SOUTHEAST AT 25 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION. AT 900 PM A TORNADO WAS REPORTED
5 MILES NORTH OF NEWTON. THIS STORM HAS A HISTORY OF
TORNADOES.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
LOCATIONS IMPACTED INCLUDE...
GRINNELL...MONTEZUMA...ROCK CREEK LAKE...SULLY...LYNNVILLE...OAKLAND
ACRES...SEARSBORO...GRINNELL REGIONAL AIRPORT AND ROCK CREEK STATE
PARK.
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 170 AND 187.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW.
&&
LAT...LON 4140 9280 4166 9300 4178 9278 4160 9248
TIME...MOT...LOC 0228Z 321DEG 22KT 4166 9283
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
AWB395
WWUS53 KDMX 070247
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
947 PM CDT SUN JUL 6 2014
IAC099-123-157-070256-
/O.EXP.KDMX.TO.W.0053.000000T0000Z-140707T0245Z/
MAHASKA IA-JASPER IA-POWESHIEK IA-
947 PM CDT SUN JUL 6 2014
...THE TORNADO WARNING FOR NORTHWESTERN MAHASKA...SOUTHEASTERN JASPER
AND SOUTHWESTERN POWESHIEK COUNTIES HAS EXPIRED...
THE TORNADO WARNING THAT WAS PREVIOUSLY IN EFFECT HAS BEEN REISSUED
FOR JASPER POWESHIEK AND MAHASKA COUNTIES AND IS IN EFFECT UNTIL
1030 PM. PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.
REMEMBER...A TORNADO WARNING STILL REMAINS IN EFFECT FOR PORTIONS OF
JASPER POWESHIEK AND MAHASKA COUNTIES.
LAT...LON 4140 9280 4166 9300 4178 9278 4160 9248
TIME...MOT...LOC 0244Z 321DEG 22KT 4166 9283
$$
AWBThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 41 min |
| Jul 6, 7:27 PM CDT | Special Weather Statement | DMX | Tama | 48 min |
| Jul 6, 7:37 PM CDT | Special Weather Statement | DMX | Dallas | 23 min |
| Jul 6, 7:50 PM CDT | Tornado Warning | DMX | Black Hawk, Grundy, Tama | 25 min |
| Jul 6, 8:05 PM CDT | Tornado Warning | DMX | Black Hawk, Grundy, Tama | 40 min |
| Jul 6, 8:28 PM CDT | Special Weather Statement | DMX | Madison | 62 min |
| Jul 6, 8:40 PM CDT | Special Weather Statement | DMX | Madison | 35 min |
| Jul 6, 8:45 PM CDT | Tornado Warning | DMX | Tama | 30 min |
| Jul 6, 8:50 PM CDT | Tornado Warning | DMX | Dallas, Madison | 25 min |
| Jul 6, 8:51 PM CDT | Tornado Warning | DMX | Jasper, Poweshiek | 24 min |
| Jul 6, 9:20 PM CDT | Special Weather Statement | DMX | Poweshiek | 55 min |
| Jul 6, 9:22 PM CDT | Special Weather Statement | DMX | Mahaska | 53 min |
| Jul 6, 9:24 PM CDT | Special Weather Statement | DMX | Madison | 51 min |
| Jul 6, 9:45 PM CDT | Tornado Warning | DMX | Jasper, Mahaska, Poweshiek | 13 min |
| Jul 6, 10:01 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 44 min |
| Jul 6, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Wapello | 42 min |
| Jul 6, 10:20 PM CDT | Tornado Warning | DMX | Mahaska, Marion | 40 min |
| Jul 6, 10:26 PM CDT | Special Weather Statement | DMX | Decatur | 34 min |
| Jul 6, 10:53 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 37 min |
| Jul 7, 3:38 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Cass, Clarke, Davis and 6 more | 19 hr |
| Jul 7, 5:24 PM CDT | Special Weather Statement | DMX | Adams | 36 min |
| Jul 7, 6:27 PM CDT | Special Weather Statement | DMX | Adams, Taylor | 48 min |
| Jul 7, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 40 min |
Nearby
Tornado Warnings in Iowa, 2014Every tornado warning in 2014Tornadoes in 2014
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.