Narrative:

Was told to keep speed up (present speed) all the way to vannn (250 knots). First officer asked to slow to 210 [knots] as per arrival; but was denied or told to keep present speed. We were at 250 knots (7;000 feet) until approximately vannn and joining the localizer. From vannn; we had three speed reductions essentially given in one radio call - 210 [knots] to mkaye; 180 [knots] to kerns; and 170 [knots] to jepni. With all of going on with speed reductions and aircraft configuring; there was a weather cell (seemed ominous to me) on the localizer course. Captain asked me to call for a weather deviation after he deviated left. The controller denied the deviation and we turned back to course - per his heading. I believe because our speed was higher than normal; and there was a lot going on with communicating with the controller we overshot the localizer on the other side. As we began our turn back; he gave us another heading to intercept. The controller seemed upset and was talking very fast at this point. I remember I had to pause once to respond to him. We were then cleared to 3;000 feet and cleared the approach again. We were also high on the approach and lowered the gear early to get on glideslope by 3;000 feet. The aircraft behind us seemed to have the same troubles. They were eventually broke out of the approach and given a heading and altitude for a new approach. (I don't have the specifics of why their approach clearance got canceled). The controller asked if there was a problem on the approach (I was busy with flying duties at the time; and didn't have much to say); I replied we had many speed reductions to deal with.after the captain talked to the ops supervisor; I also called him to get more information. Our deviation occurred around 22 miles on the approach and we were 1/2 mile off course on both sides of the localizer. He mentioned that we affected another aircraft; which I assume could be possible (I never saw any aircraft on TCAS). I asked about the weather and he said that it was broadcast several times to all aircraft that it was not a factor. I never heard that broadcast. The controller did mention after our turn back to course that it was not a factor (no turbulence reported).

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Original NASA ASRS Text

Title: Air carrier flight crew reported deviating off localizer on approach to IAH due to weather.

Narrative: Was told to keep speed up (present speed) all the way to VANNN (250 knots). First Officer asked to slow to 210 [knots] as per arrival; but was denied or told to keep present speed. We were at 250 knots (7;000 feet) until approximately VANNN and joining the localizer. From VANNN; we had three speed reductions essentially given in one radio call - 210 [knots] to MKAYE; 180 [knots] to KERNS; and 170 [knots] to JEPNI. With all of going on with speed reductions and aircraft configuring; there was a weather cell (seemed ominous to me) on the localizer course. Captain asked me to call for a weather deviation after he deviated left. The controller denied the deviation and we turned back to course - per his heading. I believe because our speed was higher than normal; and there was a lot going on with communicating with the controller we overshot the localizer on the other side. As we began our turn back; he gave us another heading to intercept. The controller seemed upset and was talking very fast at this point. I remember I had to pause once to respond to him. We were then cleared to 3;000 feet and cleared the approach again. We were also high on the approach and lowered the gear early to get on glideslope by 3;000 feet. The aircraft behind us seemed to have the same troubles. They were eventually broke out of the approach and given a heading and altitude for a new approach. (I don't have the specifics of why their approach clearance got canceled). The controller asked if there was a problem on the approach (I was busy with flying duties at the time; and didn't have much to say); I replied we had many speed reductions to deal with.After the Captain talked to the Ops Supervisor; I also called him to get more information. Our deviation occurred around 22 miles on the approach and we were 1/2 mile off course on both sides of the localizer. He mentioned that we affected another aircraft; which I assume could be possible (I never saw any aircraft on TCAS). I asked about the weather and he said that it was broadcast several times to all aircraft that it was not a factor. I never heard that broadcast. The controller did mention after our turn back to course that it was not a factor (no turbulence reported).

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.